| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205724000 | Object protection | 84 |
| 20080283417 | Process for Cathodic Protection of Electrode Materials - The present invention relates to a process for cathodic protection of electrode or electrode materials wherein negative bias is applied on the electrode. the negative bias is obtained by asymmetric current pulse. The asymmetric current pulse is obtained by performing negative phase with higher amplitude. The asymmetric current pulse is obtained by performing negative phase with wider pulse width than that of the anodic phase. The asymmetric current pulse is obtained by performing negative phase with higher amplitude and with wider pulse width than that of the anodic phase. The present invention further relates to a process for cathodic protection of electrode or electrode materials, wherein negative bias is applied on the electrode, wherein the negative bias is obtained by asymmetric current pulse, wherein the asymmetric current pulse is obtained by performing negative phase with wider pulse width than that of the anodic phase. The wider pulse width is obtained by pulse trains. | 11-20-2008 |
| 20090032410 | ELECTRICAL CONNECTION TO IMPRESSED CURRENT ANODE IN CONCRETE CONSTRUCTION - The connections to anodes used in impressed current electrochemical treatments of steel in concrete construction are at risk from rapid corrosion arising from induced anodic dissolution when these connections are embedded in reinforced concrete. A corrosion resistant connection that does not require any further protective insulation can be formed using titanium conductors [ | 02-05-2009 |
| 20090078585 | USING AN IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM TO POWER ELECTRICAL APPLIANCES - A method is disclosed for using an impressed current cathodic protection (ICCP) system that supplies an electrical current such that a metallic structure ( | 03-26-2009 |
| 20090301898 | Methods for diminishing or preventing the deposition of a metal oxide on an electrode surface - Described herein are methods for diminishing or preventing in electrochemical operating systems the deposition of a metal oxide on an electrode surface. The metal oxide is formed by electrochemically assisted reduction of volatile metal oxides formed from a metallic component exposed to oxidative environments. In one example, described herein are methods for diminishing or preventing poisoning of a cathode by applying a negative protection potential to the metallic component. In another example, described herein are methods for diminishing or preventing the deposition of a metal oxide on a cathode surface by removing oxygen from the metallic component itself and thereby decreasing the amount of released volatile oxide from the metallic component by use of an auxiliary oxygen pump cell. In another example, described herein is a method for diminishing or preventing the formation of volatile suboxides formed from a component composed of an oxide species by reduction in a fuel chamber or reducing environment, which includes applying a positive protection potential to the component. | 12-10-2009 |
| 20100133113 | CHROMIUM(VI)-FREE BLACK PASSIVATION OF SURFACES CONTAINING ZINC - The invention relates to a treatment solution for producing substantially chromium(VI)-free black conversion layers on alloy layers containing zinc, the solution comprising the following: (i) at least one first carboxylic acid having 1 to 8 carbon atoms, the acid containing no polar groups with exception of the carboxyl group and being a monocarboxylic acid, (ii) at least one second carboxylic acid having 1 to 8 carbon atoms, comprising at least one further polar group that is selected from —OH, —SO | 06-03-2010 |
| 20100147702 | Process for Cathodic Protection of Electrode Material - The present invention relates to a process for cathodic protection of electrode or electrode materials wherein negative bias is applied on the electrode. The negative bias is obtained by asymmetric current pulse. The asymmetric current pulse is obtained by performing negative phase with higher amplitude. The asymmetric current pulse is obtained by performing negative phase with wider pulse width than that of the anodic phase. The asymmetric current pulse is obtained by performing negative phase with higher amplitude and with wider pulse width than that of the anodic phase. The present invention further relates to a process for cathodic protection of electrode or electrode materials, wherein negative bias is applied on the electrode, wherein the negative bias is obtained by asymmetric current pulse, wherein the asymmetric current pulse is obtained by performing negative phase with wider pulse width than that of the anodic phase. The wider pulse width is obtained by pulse trains. | 06-17-2010 |
| 20110048965 | Composition for plasma electrolytic oxidation (PEO) treatment of Magnesium alloy products - Disclosed herein is a composition for plasma electrolytic oxidation (PEO) treatment of magnesium alloy products, which contains a sodium hydroxide (NaOH) solution as a main component, the composition comprising, based on the weight of sodium hydroxide contained in the sodium hydroxide solution: 1-20 wt % of sodium fluoride (NaF); 1-15 wt % of trisodium phosphate (Na | 03-03-2011 |
| 20110083973 | AUXILIARY DEVICE, A MARINE SURFACE VESSEL, AND A METHOD FOR CORROSION PROTECTION IN A MARINE CONSTRUCTION - A method for corrosion protection in a marine construction including a plurality of metal elements and at least one reference electrode at least partly immerged in water, the metal elements including an anode and a metal part, the anode being provided for corrosion protection of the metal part includes measuring an electric potential of the metal part with the reference electrode as a ground reference. At least one of the metal elements and at least one of the at least one reference electrode are connected to a DC electrical power outlet so as to allow an electrical regeneration current through an electrical circuit including the at least one of the metal elements, the at least one of the at least one reference electrode and the electrolyte so that the reference electrode is anodized. | 04-14-2011 |
| 20110089047 | Cadmium-Free Zinc-Based Alloy, its Use as a Sacrificial Anode, a Sacrificial Anode, and a Method for Cathodic Protection of Corrosion-Threatened Constructions in Aggressive Environment - A cadmium-free, zinc-based alloy suitable as a sacrificial anode substantially consists of 0.4-0.6% by weight of aluminum, 0.02-0.03% by weight of indium, max. 0.001% by weight of cadmium, maximum 0.005% by weight of copper, maximum 0.006% by weight of lead, maximum 0.0005% by weight of tin, maximum 0.10% by weight of other metals, in particular nickel and thallium, and balance zinc having a purity of about 99.995% The alloy shows advantageous properties with respect to resistance to cracking and breaking during post machining of the casting, especially when producing sacrificial anodes having relatively small dimensions. | 04-21-2011 |
| 20110240485 | SACRIFICIAL ANODE SYSTEM - A sacrificial anode system and associated surface pipe system maintenance method designed to protect surface pipes and associated parts. According to a first aspect of the present invention, the sacrificial anode system is installable at an interface between a first pipe and a second pipe and comprises an insertion sleeve shaped to fit along an inner surface of the first pipe, a flange attached to the insertion sleeve and shaped to rest against an end surface of the first pipe, a sacrificial anode to be positioned within the first pipe, and a stem linking the sacrificial anode to the insertion sleeve. According to a second aspect of the present invention, a method for maintaining a surface pipe system is also provided. | 10-06-2011 |
| 20110290664 | CASED PIPE INTERNAL CATHODIC PROTECTION APPARATUS AND METHOD - A method and system for protecting underground gas carrier pipes housed within an outer casing pipe in which a gas carrier pipe section disposed within an outer casing pipe section and having opposed ends is electrically isolated from a remaining gas carrier pipe section proximate each of the ends. An annular space between the gas carrier pipe section and the outer casing pipe section is filled with an electrolyte. At least one anode electrode is inserted into the annular space distal from each of the gas carrier pipe section and the outer casing pipe section and connected with a positive voltage lead of a cathodic protection rectifier. A negative voltage lead of the cathodic protection rectifier is connected to the gas carrier pipe section. | 12-01-2011 |
| 20120018312 | Corrosion Protection Method And Corrosion Protection Structure - A semiconductor layer ( | 01-26-2012 |
| 20120160704 | MODULAR ANODE ASSEMBLIES AND METHODS OF USING THE SAME FOR ELECTROCHEMICAL REDUCTION - Modular anode assemblies are used in electrolytic oxide reduction systems for scalable reduced metal production via electrolysis. Assemblies include a channel frame connected to several anode rods extending into an electrolyte. An electrical system powers the rods while being insulated from the channel frame. A cooling system removes heat from anode rods and the electrical system. An anode guard attaches to the channel frame to prevent accidental electrocution or damage during handling or repositioning. Each anode rod may be divided into upper and lower sections to permit easy repair and swapping out of lower sections. The modular assemblies may have standardized components to permit placement at multiple points within a reducing system. Example methods may operate an electrolytic oxide reduction system by positioning the modular anode assemblies in the reduction system and applying electrical power to the plurality of anode assemblies. | 06-28-2012 |
| 20120205256 | CATHODIC PROTECTION ASSESSMENT PROBE - An apparatus and method for monitoring cathodic protection of a protected object that includes a probe with five segments in series. The cathodic protection is provided by a system with a power supply that impresses current onto the protected object. An anode is included with the system that is also connected to the power supply. The third and fifth segments are in electrical communication through a frangible connection; that over time galvanically corrodes to electrically isolate the third and fifth segments. The second segment, which is a permanent isolator, is set between the first and third segments. The third segment is selectively connected with the protected object. When the third segment is selectively disconnected from the protected object, measuring the potential difference between the third segment and the first segment yields a value for object polarization that is void of IR error. | 08-16-2012 |
| 20120234692 | REPLACEABLE CP ANODES - An anode for cathodic protection of underwater equipment is provided. The anode comprises: a support body; sacrificial material retained by the support body; and an attachment mechanism for releasably attaching the anode to the underwater equipment. | 09-20-2012 |
| 20120298525 | METHOD FOR PROTECTING ELECTRICAL POLES AND GALVANIZED ANCHORS FROM GALVANIC CORROSION - A method for protecting a plurality of metal electrical poles and copper grounding from galvanic corrosion in corrosive soils includes electrically interconnecting the poles to a grounding grid and providing an impressed current anode for the cathodic protection of the grounding grid. | 11-29-2012 |
| 20130081955 | System, Apparatus, and Method for Utilization of Bracelet Galvanic Anodes to Protect Subterranean Well Casing Sections Shielded by Cement at a Cellar Area - A cathodic protection system is provided for a subterranean well casing having an enclosed upper section of the well casing being substantially shielded by a cellar from an impressed-current cathodic protection circuit passing through earth media. The impressed-current cathodic protection circuit is provided to protect an unenclosed lower section of the well casing. To protect the enclosed upper section of the well casing, a supplemental cathodic protection circuit is provided. The supplemental cathodic protection circuit is a galvanic anode cathodic protection circuit comprising the enclosed upper section of the well casing and one or more bracelet galvanic anodes being circumferentially mounted to the enclosed upper section. The enclosed upper section of the well casing and the one or more bracelet galvanic anodes are substantially surrounded by a cellar backfill, and the galvanic anode cathodic protection circuit is equally effective throughout a broad range of non-homogeneity within the cellar backfill. | 04-04-2013 |
| 20130299360 | Head Member For A Current Bar For Use In Electroplating Apparatus - Method and apparatus for reducing corrosion of a current bar in a corrosive environment. The non-reactive metal is fused around a reactive metal creating a shell and reducing the corrosion of the reactive metal. | 11-14-2013 |
| 20140318984 | SYSTEMS AND METHODS FOR IMPRESSED CURRENT CATHODIC PROTECTION - In some embodiments, an ICCP system includes an AC-DC rectifier receiving AC power from an AC power source and providing a DC output having a constant voltage or a constant current, a cathode connection electrically coupling the AC-DC rectifier to a structure to be protected by the ICCP system, current-emitting anodes arranged in parallel and receiving the DC output from the AC-DC rectifier, and a controller communicating with the AC-DC rectifier to set a maximum value for the constant voltage or constant current of the DC output. In other embodiments, an ICCP system includes a converter assembly including an AC-DC rectifier and a rectifier chassis enclosing and environmentally sealing the AC-DC rectifier. The ICCP system also includes an environmentally-sealed controller communicating with the AC-DC rectifier and an environmentally-protected Input-Output connection assembly. Junctions electrically connect the converter assembly, the environmentally-sealed controller, and the environmentally-protected connection assembly. | 10-30-2014 |
| 20150068919 | CATHODIC PROTECTION SYSTEM - An impressed current cathodic protection system for a target structure susceptible to corrosion (such as of steel or cast iron) which comprises an inert mixed metal oxide anode surrounded by a tightly packed conductive zone connected to a power supply source and having an input/output regulator to control the flow of current to the target structure. The present invention relates to device and method to provide personal and/or medical details of one or more individuals in the event of an emergency. | 03-12-2015 |
| 20150090607 | METHODS OF PREVENTING CORROSION OF SURFACES BY APPLICATION OF ENERGY STORAGE-CONVERSION DEVICES - The present disclosure pertains to methods of protecting a surface (e.g., a metal surface) from corrosion by conformably attaching a hybrid device comprising at least one multilayer energy storage device and at least one energy conversion device. In some embodiments, the multilayer energy storage device is formed by the following steps: (1) applying a non-solid negative electrode current collector composition above the surface to form an negative electrode current collector layer above the surface; (2) applying a non-solid negative electrode composition above the negative electrode current collector layer to form an negative electrode layer above the negative electrode current collector layer; (3) applying a non-solid electrically insulating composition above the negative electrode layer to form an electrically insulating layer above the negative electrode layer; (4) applying a non-solid positive electrode composition above the electrically insulating layer to form a positive electrode layer above the electrically insulating layer; and (5) applying a non-solid positive electrode current collector composition above the positive electrode layer to form a positive electrode current collector layer above the positive electrode layer. | 04-02-2015 |
| 205725000 | With control responsive to sensed condition | 14 |
| 20140251823 | GALVANIC PROTECTION CIRCUIT FOR A BRAKE DISC-PAD UNIT FOR A MOTOR VEHICLE AND KIT AND METHOD THEREOF - An active corrosion protection circuit for a brake disc-pad unit of a motor vehicle includes one of a metal disc and a pad adapted to selectively block the disc. A direct electric voltage source and an electric conductor connectable to the electric voltage source and one of the disc and the pad forms an electric circuit causing a monopolar current flux between the disc and the pad when the pad blocks the disc so that the action of the current is localized in a contact zone between the disc and the pad. | 09-11-2014 |
| 205726000 | Current sensed | 9 |
| 20100025261 | CONTROL APPARATUS, SYSTEM, AND METHOD FOR REDUCTION AND/OR PREVENTION OF SPACE WEATHER INDUCED CORROSION - An apparatus, system, method and computer program product directed to controlling corrosion, particularly space weather induced corrosion, of a conductive structure in contact with a corrosive environment and coated with a semiconductive coating, where the corrosion is controlled by a controllable filter and a corresponding electronic control unit configured to process and adjust the controllable filter in response to at least one measured parameter associated with space weather effects on the conductive structure. | 02-04-2010 |
| 20110000794 | CONTROL OF A CORROSION PROTECTION SYSTEM - A method in a corrosion protection system for protecting a first and a second metal part of a marine construction is provided. The method includes controlling electrical currents through electrical circuits, including respective anodes, the respective metal parts and an electrolyte, at least partly based on measured electrical potentials of the respective metal parts with an reference electrode as a ground reference. The method further includes repetitively performing the steps of controlling the electrical currents so as to be reduced or eliminated, measuring the electrical potentials while the electrical currents are maintained reduced or eliminated, and, after measuring the first and second electrical potentials, controlling the electrical currents so as to be increased or reestablished. | 01-06-2011 |
| 20110290665 | METHOD AND APPARATUS FOR PROVIDING ELECTROCHEMICAL CORROSION PROTECTION - An apparatus for providing electrochemical corrosion protection to a process vessel, the apparatus comprises at least one anode in communication with the process vessel; a DC current supply being electrically coupled to the process vessel and to the at least one anode; and a potential control unit in communication with the DC current supply. The potential control unit is electrically coupled to the process vessel and to a reference electrode in communication with the process vessel. The current supplied by the DC current supply for passivating the process vessel is adjustable by the potential control unit. The process vessel may comprise at least one of duplex stainless steel and superaustenitic stainless steel. | 12-01-2011 |
| 20120012470 | METHODS AND APPARATUS FOR ANALYSIS OF CONCRETE COVER IN REINFORCED CONCRETE STRUCTURES SUBJECT TO REINFORCEMENT CORROSION - In one general aspect, a system can include a probe configured to be coupled to a concrete surface of a portion of concrete. The system can include a waveform generator configured to trigger flow of a current to the portion of concrete via the probe and configured to reference a potential of a reinforcing bar embedded within the concrete. The system can also include a current detector configured to detect a magnitude of the current. | 01-19-2012 |
| 20130228471 | Adaptive Active Cathodic Protection - A device comprising an electrically conductive surface portion is provided for immersion in an electrically conductive liquid such as water. At least one load electrode is provided for supplying an electric load current into the electrically conductive liquid. Further, an electrode, e.g., one or more of the at least one load electrode acts as protection electrode. A protection current source, e.g., a resistor, is electrically coupled to the conductive surface portion and to the protection electrode for providing a protection current flowing between the electrically conductive surface portion and the electrode. Further, the protection current source is adapted for changing the protection current in response to a change in the load current. | 09-05-2013 |
| 20130292263 | Multiple Structure Cathodic Protection System - The invention is a multiple-structure cathodic protective system that includes multiple voltage-controlled outputs to protect multiple structures with a common ground bed, or a single structure with multiple anode ground beds. Each output feeds an individual cable that is powered by independent pulse-width-modulated voltage power supplies. Current through the cables is monitored and the PWM control compensates to maintain the correct amount of current for maximum protection and long life. | 11-07-2013 |
| 20140151241 | PIPELINE COMMUNICATIONS - Communications systems are provided for use with an impressed current cathodic protection (ICCP) system having single or multiple ICCP components. A pipeline may be provided by connecting multiple pipeline sections together as an integrated pipeline where each section has an associated ICCP system. A communications signal comprising an AC signal is impressed on the pipeline and received by receivers associated with power supplies associated with each ICCP system. Upon reception of the AC signal, a controllable switch is operated within the power supplies to synchronously disconnect them from their power source and thereby enable accurate testing of the ICCP system. | 06-05-2014 |
| 20140216945 | PASSIVE WATER HEATER ANODE ROD DEPLETION SENSOR ALGORITHM - The present subject matter relates to methodologies and algorithms for providing anode rod depletion detection and warnings thereof to consumers. Consumers general are not concerned with monitoring consumption of protective anode rods incorporated within water heaters, The present subject matter provides automatic monitoring of anode rod depletion and provides the consumer with notification of rod depletion beyond a predetermined amount by one or more of optical, audible, or electronic devices. Aspects of the algorithm include handling of start-up conditions, service board replacement conditions, and properly defining the anode rod depletion threshold. Additional algorithm aspects include considerations for taking into consideration power outage conditions and accurately estimating galvanic current. | 08-07-2014 |
| 20140262822 | SACRIFICIAL ANODE CONTROL - Systems and methods are described for controlling the current of a sacrificial anode based on the conductivity state of the water. An unregulated current of the sacrificial anode relative to the water tank is measured and a conductivity state of the water is identified based on the measured unregulated current. A maximum current limit for the sacrificial anode is determined based on the conductivity state of the water and the current of the sacrificial anode is limited such that the current does not exceed the determined maximum current limit. | 09-18-2014 |
| 205727000 | Voltage sensed | 4 |
| 20100270169 | CATHODIC PROTECTION METHOD AND APPARATUS - A cathodic protection system for use in an electrolyte includes a protected structure to be at least partially immersed in the electrolyte, at least one sacrificial anode to be at least partially immersed in the electrolyte and electrically connected to the protected structure, and a substantially impermeable barrier disposed between the at least one sacrificial anode and the electrolyte. | 10-28-2010 |
| 20120199495 | SYSTEM AND METHOD FOR DETECTING AND PREVENTING GALVANIC CORROSION - A system for detecting and preventing galvanic corrosion of an anodic metal includes a potential detector configured to monitor an electrical potential within the electrolyte solution, a signal amplifier coupled with the potential detector, and a current delivery circuit coupled with the signal amplifier. The signal amplifier is configured to provide an output proportional to the monitored electrical potential, and the current delivery circuit is configured to provide a current to a cathodic metal that is proportional to the output of the signal amplifier. | 08-09-2012 |
| 205728000 | And programmed, cyclic, or time responsive control | 2 |
| 20140262823 | DIGITALLY CONTROLLED CORROSION PROTECTION SYSTEM AND METHOD - At least one corrosion protection unit is located adjacent to a region of a structure immersed in an electrolyte. Each corrosion protection unit includes a circuit for applying rectified alternating current voltage between the structure and electrodes in the electrolyte. Each corrosion protection unit includes Reference Cells to produce direct current voltage between the Reference Cells and the structure, a measuring circuit coupled to the Reference Cells for measuring the potential between the Reference Cells and the structure, and a control circuit for controlling the level of the rectified alternating current voltage in accordance with the measured potential levels. Corrosion protection units are independent of one another, so that independently established rectified alternating current voltages are applied between different regions of the structure and e first and second corrosion protection units. Alternatively, the corrosion protection units apply constant current or constant voltage instead of Reference Cell feedback control. | 09-18-2014 |
| 20150368809 | CATHODIC PROTECTION MANAGEMENT SYSTEM - A cathodic protection system that is able to monitor the operational status of a plurality of test points and rectifiers. The cathodic protection system includes a plurality of test point monitors that are associated with test points and a plurality of rectifier controllers that are associated with the rectifiers located along a utility pipeline. The test point monitors are battery powered while the rectifier controllers may be utility line powered. Each of the test point monitors and rectifier controllers communicates with a base station utilizing a wireless communication technique. The base station communicates with a back end server that operates to accumulate data and visually present the data to an operator on a display associated with cathodic protection software application. The software application allows the operator to monitor the heath of the system and address alerts generated by any of the test points or monitored rectifiers. | 12-24-2015 |
| 205729000 | With programmed, cyclic, or time responsive control | 2 |
| 20090166219 | AN ELECTRICAL DEVICE FOR IMPEDING CORROSION - The present invention relates to an electrical device for impeding corrosion of a metal body. The electrical device includes a driver circuit including at least one inductive component. The driver circuit is suitable for driving one or more pads coupled to the metal body so that corrosion of the metal body is impeded. A control circuit is provided for controlling the operation of the driver circuit. A feedback circuit provides feedback from the driver circuit to the control circuit. The driver circuit can operate as a resonant circuit, owing to the at least one inductive component, and ballast energy applied to the pads. | 07-02-2009 |
| 20160145748 | HIGH SPEED SEQUENTIAL CATHODIC PROTECTION SYSTEMS AND METHODS - High speed cathodic protection control systems and methods provide for the delivery of deliver electrical current to a group of metal structures, such as well casings, in a sequential manner to prevent corrosion. A plurality of relays allow electrical current to flow from a power supply to subsets of the group of metal structures. The flow of electrical current is controlled by a microntroller which controls the relays to allow delivery of the electrical current at high speeds for short periods of time from the power supply to subsets of the group of metal structures in a sequential manner. | 05-26-2016 |
| 205730000 | Internal battery action (e.g., using sacrificial anode, etc.) | 19 |
| 20110089048 | AUXILIARY DEVICE, A MARINE SURFACE VESSEL AND A METHOD FOR A SACRIFICIAL ANODE IN A MARINE CONSTRUCTION - A method is provided for corrosion protection in a marine construction, such as a marine surface vessel or a marine structure, the marine construction including at least one metal element and a sacrificial anode adapted to be at least partly immerged in an electrolyte in the form of water, in which the marine construction is at least partly immerged, the at least one metal element including a metal part, the sacrificial anode being provided for corrosion protection of the metal part. The method includes connecting at least one of the at least one metal element and the sacrificial anode to a DC electrical power outlet so as to allow an electric de-passivation current through an electrical circuit including the sacrificial anode, the metal element and the electrolyte. | 04-21-2011 |
| 20110180421 | USE OF A SACRIFICIAL ANODE FOR CORROSION PROTECTION OF A PORTABLE DEVICE, E.G. A HEARING AID - A portable device includes a substrate, a number of electronic components, and a battery having an anode and a cathode for energizing at least some of the components. The application further relates to a method of protection a portable device against corrosion and to the use of a portable device. An object of the present application is to protect selected metallic parts of a bodyworn electronic device against corrosion in a flexible and controlled manner. The problem is solved in that the portable device includes a sacrificial anode in the form of a component adapted to be surface mounted on the substrate. This has the advantage that corrosion can be contained at a specific location. The device may e.g. be used for portable listening devices, e.g. hearing aids or headsets or earphones including a part adapted for being worn at or in an ear of a user. | 07-28-2011 |
| 20110308967 | Pump Cavitation Device - A sacrificial body mitigates cavitation damage to components within a pump. The sacrificial body is mounted in the pump so that flowing fluid passes over the sacrificial body, which causes the sacrificial body to shed electrons into the flowing fluid in the vicinity of the cavitation. The excess electrons tend to suppress hydrogen ions from releasing, which can mitigate cavitation. The sacrificial body is formed of a material having less resistance to corrosion due to the flowing fluid than the components of the pump. Needles are attached to the sacrificial body for immersion in the flowing fluid to facilitate the release of the electrons for the sacrificial body. | 12-22-2011 |
| 20130118915 | SACRIFICIAL ANODE - This invention relates to a sacrificial anode, comprising: a first layer of a first material; and, a second layer of a second material which is electrically connected to the first layer, wherein the first material is more anodic with respect to a galvanic series than the second material. The invention also relates to a body including the sacrificial anode. | 05-16-2013 |
| 20130134054 | ANODIC DEVICES AND METHODS FOR REDUCING CORROSION - The present invention includes an anodic device for reducing corrosion adapted to reduce corrosion of an object subject to corrosion having a base with a thickness and surface area, and a plurality of protrusions protruding from the base each having a thickness and surface area, wherein the device is configured to allow a current to flow between the device and the object subject to corrosion. The present invention also includes methods associated with the use of such devices. | 05-30-2013 |
| 20140021062 | Charging a Sacrificial Anode with Ions of the Sacrificial Material - Cathodic protection of steel in concrete is provided by locating an anode assembly including both a sacrificial anode and an impressed current anode in contact with the concrete and providing an impressed current from a power supply to the anode. The impressed current anode forms a perforated sleeve surrounding a rod of the sacrificial anode material with an activated ionically-conductive filler material between. The system can be used without the power supply in sacrificial mode or when the power supply is connected, the impressed current anode can be powered to provide an impressed current system and/or to recharge the sacrificial anode from sacrificial anode corrosion products. | 01-23-2014 |
| 20140021063 | Two Stage Cathodic Protection System Using Impressed Current and Galvanic Action - Cathodic protection of steel in concrete is provided by locating an anode assembly including both a sacrificial anode and an impressed current anode in contact with the concrete and providing an impressed current from a power supply to the anode. The impressed current anode forms a perforated sleeve surrounding a rod of the sacrificial anode material with an activated ionically-conductive filler material between. The system can be used without the power supply in sacrificial mode or when the power supply is connected, the impressed current anode can be powered to provide an impressed current system and/or to recharge the sacrificial anode from sacrificial anode corrosion products. | 01-23-2014 |
| 20140262824 | CORROSION PROTECTION SYSTEM FOR NON-IMMERSED EQUIPMENT - An ionic transport material is disposed relative to a substrate and configured to establish an ionic connection between the substrate and a replaceable sacrificial anode. The replaceable sacrificial anode is electrically connected to the substrate and is provided to inhibit corrosion of the substrate. | 09-18-2014 |
| 20150021200 | Protecting A Metal Surface From Corrosion - A system and methods for protecting a metal surface from corrosion are provided herein. The method includes injecting particles comprising a sacrificial anodic material into a fluid proximate to the metal surface. | 01-22-2015 |
| 20150021201 | ADHESIVE HYDROGEL AND METHOD FOR ELECTROLYTIC PROTECTION OF CONCRETE STRUCTURE - Disclosed is an adhesive hydrogel containing a polymer matrix, water, and a polyhydric alcohol, wherein the polymer matrix contains a copolymer of a monofunctional monomer with a single polymerizable C—C double bond and a polyfunctional monomer with two or more polymerizable C—C double bonds, the monofunctional monomer contains a nonionic (meth)acrylamide-based monomer, and the polyfunctional monomer has a composition formula: C | 01-22-2015 |
| 20150090608 | SACRIFICIAL ANODE ASSEMBLY - A method of using and a steel reinforced concrete protector in an anode cavity which comprises a cored hole, a drilled hole or a cut chase formed in concrete. The protector comprises a sacrificial anode assembly and a separate backfill. The sacrificial anode assembly comprises a sacrificial metal element that is a metal less noble than steel and an activator to maintain an activity of the sacrificial metal element. The at least one spacer prevents the sacrificial metal element and the activator from contacting the surface of the anode cavity. The spacer and the sacrificial metal element have a coupling mechanism which facilitates connection of the sacrificial metal element to the spacer. The backfill is a pliable and viscous material which contains an electrolyte, and the backfill facilitates embedding the anode assembly in the anode cavity. The invention also relates to a prepackaged sacrificial anode assembly and a method of increasing a shelf life of the sacrificial anode. | 04-02-2015 |
| 20150299868 | Corrosion Protection Using a Sacrificial Anode - Corrosion protection of steel in concrete is provided by locating an anode assembly including both a sacrificial anode and an impressed current anode in contact with the concrete and providing an impressed current from a power supply to the anode. The impressed current anode forms a perforated sleeve surrounding a rod of the sacrificial anode material with an activated ionically-conductive filler material between. The system can be used without the power supply in sacrificial mode or when the power supply is connected, the impressed current anode can be powered to provide an impressed current system and/or to recharge the sacrificial anode from sacrificial anode corrosion products. | 10-22-2015 |
| 20150329974 | System, Apparatus, and Method for Utilization of Bracelet Galvanic Anodes to Protect Subterranean Well Casing Sections Shielded by Cement at a Cellar Area - A cathodic protection system is provided for a subterranean well casing having an enclosed upper section of the well casing being substantially shielded by a cellar from an impressed-current cathodic protection circuit passing through earth media. The impressed-current cathodic protection circuit is provided to protect an unenclosed lower section of the well casing. To protect the enclosed upper section of the well casing, a supplemental cathodic protection circuit is provided. The supplemental cathodic protection circuit is a galvanic anode cathodic protection circuit comprising the enclosed upper section of the well casing and one or more bracelet galvanic anodes being circumferentially mounted to the enclosed upper section. The enclosed upper section of the well casing and the one or more bracelet galvanic anodes are substantially surrounded by a cellar backfill, and the galvanic anode cathodic protection circuit is equally effective throughout a broad range of non-homogeneity within the cellar backfill. | 11-19-2015 |
| 20160160360 | Preventing Corrosion of an Electrical Connector - Embodiments of the invention relate to a primary contact or primary body comprising of a primary material with a propensity to corrode. A location on a surface of the primary body is an active location and functions to interface with a secondary body. The active location has a first surface and an oppositely disposed second surface. An anode material is applied to the second surface adjacent to the active location on the first surface. The primary body is exposed to a corrosive material. The anode material functions to divert a galvanic corrosive medium from the active location to the applied anode material. | 06-09-2016 |
| 20190145011 | VISUAL ELECTROLYTIC CORROSION INDICATION AND PREVENTION APPARATUS | 05-16-2019 |
| 205731000 | Ferrous metal | 4 |
| 20160153096 | Fastening Sacrificial Anodes to Reinforcing Bars in Concrete for Cathodic Protection | 06-02-2016 |
| 205732000 | Using anode containing aluminum | 3 |
| 20090065367 | APPLICATIONS FOR SACRIFICIAL ANODES - This invention relates to protection of a metal component exposed to a corroding medium. One or more of the following are provided: cathodic protection, measuring of a condition of the component, retarding or avoiding of fouling. A sacrificial anode is used as the energy source such that the electric circuit can provide a pulsating current, voltage, automatically adapted current, or protecting potential. Germanium solid state elements are used. | 03-12-2009 |
| 20100147703 | SACRIFICIAL ANODE AND TREATMENT OF CONCRETE - A method of protecting steel in concrete is disclosed. A voltage between two connections of a power supply is generated such that current can flow between a negative connection and a positive connection. In a first protection step, one of the connections of the power supply is electrically connected to the steel to be cathodically protected and a sacrificial anode is electrically connected in series with the other connection of the power supply such that the voltage generated by the power supply is added to the voltage generated between the sacrificial anode and the steel to produce a voltage greater than the voltage generated between the sacrificial anode and the steel alone. The power supply may be a cell or battery and may be combined with the sacrificial anode to form a single unit. In a second protection step that may follow the first protection step, the voltage generated by the power supply is no longer present and a current flows between the sacrificial anode and the steel to continue protecting and/or passivating the steel. This may be achieved by connecting the sacrificial anode directly to the steel. | 06-17-2010 |
| 20150053573 | GALVANIC CORROSION MITIGATION WITH METALLIC POLYMER MATRIX PASTE - A method of mitigating galvanic corrosion on a vehicle is provided for use of metals with carbon containing composites. An electrically conductive material comprising a plurality of electrically conductive metallic particles and a polymer is applied to a corrosion susceptible region of an assembly having a carbon-reinforced composite and a metal. The electrically conductive material has an electrical conductivity of greater than or equal to about 1×10 | 02-26-2015 |
| 205734000 | Metal imbedded in asphalt, concrete, stone, or masonry, (e.g., reinforced concrete, etc.) | 20 |
| 20080202941 | CATHODIC PROTECTION OF A CONCRETE STRUCTURE HAVING A PART IN CONTACT WITH A WETTING MEDIUM AND A PART ABOVE THE MEDIUM - Corrosion of steel in a concrete structure such as a column in sea water occurs primarily at the zone which is subject to a wetting and drying action and is inhibited using cathodic protection by attaching to the column at the zone an impervious sealed sleeve which carries no anode itself but which cooperates with an anode body in the water below the sleeve. The sleeve acts to inhibit permeation of oxygen through the concrete to the steel and at the same time acts to promote transfer of current from the anode through the concrete under the sleeve by preventing drying by preventing moisture escape. An anode arrangement may be provided only at the top of the sleeve to consume oxygen in that area. The sleeve may be applied over a layer of grout. The top edge surface of the grout may be sealed from the sleeve to the column. | 08-28-2008 |
| 20080230398 | Sacrificial Anode and Backfill - The installation and use of embedded sacrificial anodes to protect reinforced concrete may be improved. In one example a cavity [ | 09-25-2008 |
| 20090127132 | CORROSION CONTROL METHOD AND APPARATUS FOR REINFORCING STEEL IN CONCRETE STRUCTURES - Mixed-metal-oxide (MMO) coated precious-metal tape is installed directly on concrete surfaces using an electrically conductive adhesive, thereby obviating the need for slots, holes, cementitious grout or additional concrete. The electrically conductive adhesive is preferably formed by disposing mixed-metal-oxide (MMO) coated precious-metal particles in an adhesive layer. The tape anodes may be installed on the concrete surfaces including a shallow concrete cover or congested reinforcing steel without developing an electrical short circuit between the anode and the reinforcing steel. Overall the invention provides for quick and low cost installation on many concrete structures. Interconnections between the tape anodes and bare metal distribution elements may be made with conductive adhesive or spot welding. | 05-21-2009 |
| 20090183998 | ACTIVATING MATRIX FOR CATHODIC PROTECTION - The galvanic cathodic protection of reinforced concrete structures such as bridges, buildings, parking structures, piers, and wharves, is enhanced by the use of an inert water absorbent solid. The absorbent solid and chemicals are mixed with a cementitious binder to form an activating matrix. This matrix surrounds a sacrificial metal anode such as zinc, or aluminum or their alloys. The metal anode is electrically connected to the ferrous reinforcing member by a metallic conductor. The water absorbent solid may be a clay such as bentonite or a hydrated mineral such as vermiculite. It is preferably in the form of discrete particles dispersed throughout the binder. The inclusion of the absorbent solid in the activating matrix serves to increase the protective current, thereby reducing corrosion of the reinforcing components of the concrete structure. | 07-23-2009 |
| 20090200179 | Method for the Cathodic Protection of the Reinforcements of Ferroconcrete Edifices Against Corrosion - Disclosed is a method for the cathodic protection (KKS) of the reinforcements of ferroconcrete edifices against corrosion. According to said method, a) one side of the structural joints of the concrete supporting elements is sealed, b) the KKS anodes are introduced into the structural joints, c) an ionically conductive gel is introduced into the joints that are closed on one side, and d) the structural joints are optionally sealed as a whole. Surprisingly, the required electrical conductivity can be reliably ensured during the entire application period with the aid of the ionically conductive gel, which is a prerequisite for effectively and reliably protecting the steel reinforcements of concrete structures against corrosion. | 08-13-2009 |
| 20090229993 | Treatment Process For Concrete - A single anode system used in multiple electrochemical treatments to control steel corrosion in concrete comprises a sacrificial metal that is capable of supporting high impressed anode current densities with an impressed current anode connection detail and a porous embedding material containing an electrolyte. Initially current is driven from the sacrificial metal [ | 09-17-2009 |
| 20090229994 | DISCRETE SACRIFICIAL ANODE ASSEMBLY - Sacrificial anode assemblies have the advantage that they can provide galvanic protection to steel in concrete and do not require long term maintenance of a DC power supply. However sacrificial anode assemblies often loose adhesion to the concrete surface. This invention discloses the use of a sacrificial anode ( | 09-17-2009 |
| 20100314262 | CORROSION PROTECTION OF STEEL IN CONCRETE - An electric field modifier for boosting a current output of a sacrificial anode to enhance its protective effect and direct the current output to improve current distribution in galvanic protection of steel in a concrete element exposed to air is disclosed. A cavity is formed in a concrete element and a combination comprising a sacrificial anode, an electric field modifier and an ionically conductive filler are embedded therein. The sacrificial anode is connected to the steel. The modifier comprises an element with an anode side, supporting an oxidation reaction, in electrical contact with a cathode side, supporting a reduction reaction. The cathode of the modifier faces the sacrificial anode and is separated therefrom by a filler which contains an electrolyte that connects the sacrificial anode to the cathode of the modifier. The anode of the modifier faces away from the sacrificial anode. Preferably, the reduction reaction, on the cathode of the modifier, comprises reduction of oxygen from the air. | 12-16-2010 |
| 20110168571 | TREATMENT PROCESS FOR CONCRETE - A single anode system used in multiple electrochemical treatments to control steel corrosion in concrete. The anode system comprises a sacrificial metal that is capable of supporting high impressed anode current densities with an impressed current anode connection detail and a porous embedding material containing an electrolyte. Initially current is driven from the sacrificial metal ( | 07-14-2011 |
| 20120111736 | SACRAFICIAL ANODE ASSEMBLY - A method and a steel reinforced concrete protector in an anode cavity which comprises a cored or drilled hole or a cut chase formed in concrete. The protector comprises a sacrificial anode assembly and a separate backfill. The sacrificial anode assembly comprises a sacrificial metal element less noble than steel and an activator to maintain an activity of the sacrificial metal element. The at least one spacer prevents the sacrificial metal element and the activator from contacting the anode cavity. The spacer and the sacrificial metal element have a coupling mechanism which facilitates connection of the sacrificial metal element to the spacer. The backfill is a pliable and viscous material which contains an electrolyte, and the backfill facilitates embedding the anode assembly in the anode cavity. A prepackaged sacrificial anode assembly and a method of increasing a shelf life of the sacrificial anode is also covered. | 05-10-2012 |
| 20120261270 | SACRIFICIAL ANODE AND TREATMENT OF CONCRETE - A method of protecting a metal section in concrete. The method comprises the steps of providing a sacrificial anode and embedding the sacrificial anode in a porous matrix in the cavity; providing a source of DC power with positive and negative connections and electrically connecting one of the connections of the source of DC power to the metal section to be protected; electrically connecting the a sacrificial anode in series with the other connection of the source of DC power and spacing the source of DC power from the cavity and the connections to the source of DC power which comprise at least one of wires and cables; and driving an anode current density from the sacrificial anode in excess of 500 mA/m | 10-18-2012 |
| 20130118916 | TREATMENT PROCESS FOR CONCRETE - A single anode system used in multiple electrochemical treatments to control steel corrosion in concrete comprises a sacrificial metal that is capable fo supporting high impressed anode current densities with an impressed current anode connection detail and a porous embedding material containing an electrolyte. Initially current is driven fromt eh sacrificial metal [ | 05-16-2013 |
| 20130168261 | ANODE FOR CATHODIC PROTECTION AND METHOD FOR MANUFACTURING THE SAME - It is described a metal anode for cathodic protection in form of mesh ribbon having meshes whose holes are of rhomboidal shape, characterised by having such holes of rhomboidal shape arranged with the major diagonal oriented along the direction of the ribbon length and by the fact that the side edges along the ribbon length are free from cutting protrusions. It is also described a method for obtaining such anode. | 07-04-2013 |
| 20130233725 | METHOD FOR PROTECTING ELECTRICAL POLES AND GALVANIZED ANCHORS FROM GALVANIC CORROSION - A method for protecting a plurality of metal electrical poles and copper grounding from galvanic corrosion in corrosive soils includes electrically interconnecting the poles to a grounding grid and providing an impressed current anode for the cathodic protection of the grounding grid. | 09-12-2013 |
| 20140027306 | Cathodic Protection of a Concrete Structure - Corrosion of steel in a concrete structure such as a column in sea water occurs primarily above the water line and is inhibited using cathodic protection by attaching to the column an impervious sealed sleeve in which is provided a sacrificial anode in sheet form in contact with a layer of water transport medium so that water from the location of the bottom of the water transport medium within the water is carried into the area of the sacrificial anode to enhance ionic current. | 01-30-2014 |
| 20140202879 | ANODE ASSEMBLY FOR CATHODIC PROTECTION - The cathodic protection of a reinforced concrete structure utilizes sacrificial anodes such as aluminum or zinc as well as alloys thereof. Each anode is embedded or substantially covered in a material consisting of a hydrophilic non-cementious open-cell foam. An activating agent such as one or more lithium salts is contained within the cells of the foam to maintain the anodes in an electrochemically active state. The activating agent may be immobilized in the cells using an aqueous gel such as agar. One or more metallic conductors electrically connect the anodes to the metal reinforcing members. | 07-24-2014 |
| 20140305806 | Cathode Protection Method and Apparatus for Reinforced Concrete Structure and Composite Structure and Processing Method for Reinforced Concrete Structure - A cathode protection method of embedded CFRP anode for reinforced concrete structure includes the following steps. Provide a preformed groove with a predetermined shape and size in a surface of a protection area of a reinforced concrete body, and remove dust in the preformed groove. Provide a CFRP member on the surface of the protection area of the reinforced concrete body. Coat an electrical conductive adhesive material between side surfaces of the reinforcing column of the CFRP member and the preformed groove and between the reinforcing plate and the reinforced concrete body. Connect the CFRP member with a positive electrode of an external DC power supply and the steel reinforcing element with a negative electrode of the external DC power supply. | 10-16-2014 |
| 20140305807 | Cathode Protection Method for Reinforced Concrete Structure and Apparatus Therefor - A cathode protection method for reinforced concrete structure includes steps of: a. removing loose concrete within a protection area, and filling adhesive materials with conductive ability into cracks of a concrete; b. implanting CFRP member as a impressed current auxiliary anode material into the concrete, and spacedly arranged the CFRP member with steel reinforcing elements within the concrete; c. coating adhesive materials on a side of the CFRP member, and firmly pressing the adhesive materials to bonding the CFRP member and the concrete with each other; and d. electrically connecting the steel reinforcing elements and the CFRP member to a negative electrode and a positive electrode of an external DC power supply respectively, such that the concrete, the steel reinforcing element, the CFRP member, and the external DC power supply generate serially-close conductive circuit. | 10-16-2014 |
| 20150060298 | METHOD FOR THE GALVANIC PROTECTION OF A REINFORCED CONCRETE STRUCTURE - The invention relates to the galvanic protection of a concrete structure ( | 03-05-2015 |
| 20160040302 | ANODE FOR CATHODIC PROTECTION AND METHOD FOR MANUFACTURING THE SAME - It is described a metal anode for cathodic protection in form of mesh ribbon having meshes whose holes are of rhomboidal shape, characterised by having such holes of rhomboidal shape arranged with the major diagonal oriented along the direction of the ribbon length and by the fact that the side edges along the ribbon length are free from cutting protrusions. It is also described a method for obtaining such anode. | 02-11-2016 |
| 205735000 | Ferrous metal | 3 |
| 20110031132 | HYDRAULIC BINDER AND BINDER MATRICES MADE THEREOF - The invention relates to a hydraulic binder, comprising K, Ca, aluminosilicates, as well as optionally Li, Na, and Mg, wherein the binder comprises the following components: a) a latently hydraulic aluminosilicate glass with a ratio of (CaO+MgO+Al | 02-10-2011 |
| 205736000 | Stainless steel | 2 |
| 20130220827 | Stainless steel anodes for alkaline water electrolysis and methods of making - The corrosion resistance of stainless steel anodes for use in alkaline water electrolysis was increased by immersion of the stainless steel anode into a caustic solution prior to electrolysis. Also disclosed herein are electrolyzers employing the so-treated stainless steel anodes. The pre-treatment process provides a stainless steel anode that has a higher corrosion resistance than an untreated stainless steel anode of the same composition. | 08-29-2013 |
| 20150076000 | ELECTROCHEMICAL ERADICATION OF MICROBES ON SURFACES OF OBJECTS - The invention describes a method of reducing or preventing the growth of microbes on the surface of an object, wherein the object is of such material that it can act as a working electrode. The method comprises the steps of providing a counter electrode, and a reference electrode. The object is used as the working electrode. Electrical current is passed through the working and counter electrodes. The current through the counter electrode is varied such that the electric potential of the working electrode is constant relative to the electric potential of the reference electrode. Also described is an apparatus for reducing or preventing microbes on an object using a potentiostatic device. | 03-19-2015 |
| 205738000 | Using anode containing precious metal | 1 |
| 20110120884 | IMPRESSED CURRENT PROTECTION FOR FOOD OR BEVERAGE CONTAINERS - Techniques are generally described herein for protecting food or beverage containers (e.g., cans) using impressed current protection. In various embodiments, containers may be received into at least one conductive bed, each bed having a complementary anode. The containers may then be electrically coupled to a first terminal (e.g., negative) of a power supply, and the anode may be electrically coupled to a second terminal (e.g., positive) of the power supply. Resultantly, protective current may be provided to the containers by the anode. Other embodiments may be disclosed and claimed | 05-26-2011 |
| 205740000 | Vessel (e.g., ship hull, steam boiler, etc.) | 4 |
| 20100224505 | Electro-Chemical Method In An Enrichment Process - The invention relates to a method that inhibits the formation of a deposition layer on metal surfaces in liquid submersion in a process susceptible to deposition, e.g. in an enrichment process. In the method, anodic current is supplied to the metal surface ( | 09-09-2010 |
| 20110139632 | LONG-TERM STORAGE OF POTABLE WATER IN METALLIC VESSELS - A method for controlling microbial growth in potable water stored in a vessel having a metallic surface includes heating the metallic surface to a temperature between about 480° C. (900° F.) and about 870° C. (1600° F.), exposing the metallic surface to oxygen during heating to oxidize potential reduction sites on the metallic surface and charging potable water containing silver ions to the vessel. A vessel having a metallic surface is prepared for long-term storage of potable water containing silver ions by heating the metallic surface to a temperature between about 480° C. (900° F.) and about 870° C. (1600° F.) and exposing the metallic surface to oxygen during heating to oxidize electropositive metals on the metallic surface or by treating the metallic surface with an aqueous solution containing on oxidizing agent to oxidize potential reduction sites on the metallic surface. | 06-16-2011 |
| 20140262825 | Encapsulated Impressed Current Anode for Vessel Internal Cathodic Protection - Embodiments of a system and method for providing cathodic protection to a vessel include encapsulating a dimensionally stable anode with a wax-repellant cementitious coating. The anode, with the encapsulant, is inserted into a structure to be protected, such as a vessel for handling wet crude. A power supply is connected to the anode and to the vessel, making the vessel a cathode. When power is applied, ions flow from the anode, through the encapsulant and fluids in the vessel, to the vessel structure. The encapsulant prevents paraffin wax from building up on the anode. | 09-18-2014 |
| 20160002794 | CORROSION CONTROL FOR SUPERCRITICAL WATER GASIFICATION COMPONENTS - Systems and articles of manufacture for minimizing corrosion in supercritical water gasification components are disclosed, as well as methods for their preparation and operation. The systems may include a nonconducting conduit that is configured to receive a fluid at a first end and transmit the fluid toward a second end thereof. The fluid may include a plurality of ions. The nonconducting conduit may include an inside surface and an outside surface. The systems may further include a plurality of electrodes distributed about at least a portion of the outside surface of the nonconducting conduit and a power source electrically connected to the plurality of electrodes. The power source may be configured to apply an alternating current across the plurality of electrodes, and the alternating current may be effective to exert an electrophoretic force on the plurality of ions in the fluid. | 01-07-2016 |
