| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 204404000 | Corrosion | 15 |
| 20080217172 | Apparatus For Measuring Electrochemical Corrosion - Disclosed herein is an electrochemical corrosion sensor. The sensor may include an array of electrodes wherein each electrode may include a diamond like carbon coating disposed on at least a portion of the electrodes. The coating thickness may be at least about 1 micron. The electrodes may therefore provide relatively more accurate determination of electrode corrosion rates that may be more consistent with coupon type gravimetric testing. | 09-11-2008 |
| 20080257729 | Galvanic corrosion monitoring and analyzing system - An electrochemical integrated system for measuring the galvanic current values and direction for two to four electrodes, comprising a corrosion cell and two to four electrodes coupled together via an interface and exposed to electrolyte for allowing electrochemical oxidation and reduction reactions to occur on the surface of the electrodes, characterized in that the two to four electrodes are flat metallic specimens made of different metals and alloys, and arranged adjacent and parallel to each other at the bottom of the corrosion cell so that the electrolyte is kept perpendicular on the flat specimens, with a non-corrosive material working as a barrier or isolator among them, wherein the whole combination of specimens is exposed to identical electrolytes under identical conditions allowing monitoring of the galvanic current values and directions at the same time for the whole combination. | 10-23-2008 |
| 20090050478 | Evaluation of the corrosion inhibiting activity of a coating - The corrosion inhibiting activity of a coating is determined from the effect of corrosion inhibiting species released by the coating on the oxygen reduction current for a cathode placed very close to the coating. A rotating disk electrode or pumped solution flow is used to sweep the corrosion inhibiting species from the coating surface to the cathode. The oxygen reduction current is measured under conditions of oxygen diffusion control. | 02-26-2009 |
| 20100108510 | MEASURING DEVICE FOR MONITORING THE CORROSION OF A STEEL REINFORCEMENT - A measuring device ( | 05-06-2010 |
| 20100126859 | Electrochemical probes for corrosion monitoring in hydrogen sulfide systems and methods of avoiding the effect of electron-conducting deposits - Electrochemical probes for corrosion monitoring in an environment that may cause the formation of electron-conducting deposits and the method for making such probes were described. The probes have long exposed electrodes. Except for the tip section, all surfaces of the exposed electrodes are coated with a coating or covered with electrically insulating tubing, so that only the tip section has uncovered metal that serves as the active areas of the electrodes. The coating or tubing material is such that the deposits cannot easily form on its surfaces. Because the electrical bridging between the active areas of any two electrodes requires the deposition of an evenly distributed layer of the electron-conducting deposits along the path from one area to the other area, the coated surface reduces the possibility of short-circuiting for the active areas of the electrodes. These probes are especially suitable for applications in systems containing hydrogen sulphide (H | 05-27-2010 |
| 20100206729 | ELECTROCHEMICAL CORROSION POTENTIAL SENSOR - An electrochemical corrosion potential sensor (ECP sensor) has an electrode cap, an electrode fixing body, a tubular insulator, a tubular metallic housing, and a conductive wire. Both ends of the tubular insulator are connected to the electrode fixing body and the tubular metallic housing respectively. A conductive wire passes through the tubular insulator and the tubular metallic housing, and is connected to an inner surface of the electrode fixing body. The electrode cap | 08-19-2010 |
| 20110315550 | CORROSION RESISTANCE EVALUATOR - The present invention is directed to a corrosion resistance evaluator suitable for corrosion testing coated metals substrates, such as autobodies. A corrosion resistance evaluator provided with a chamber containing electrolyte to which anode and cathode coated with protective coating being tested are exposed. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages for preset durations that are interspaced with recovery periods. The impedance date collected is then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days). | 12-29-2011 |
| 20120132526 | Localized Corrosion Monitoring Device for Limited Conductivity Fluids - A localized corrosion monitoring (LCM) device is modified to obtain polarization resistance (R | 05-31-2012 |
| 20130284597 | DEVICE AND METHOD FOR TESTING CORROSION INHIBITOR - A device for testing a corrosion inhibitor, the device including: a circulating cooling water tank; a circulating water pump; a flowmeter; a five-port glass tube; a working electrode; a reference electrode; an auxiliary electrode; a heating rod; and an electrochemical workstation. The circulating water pump is connected to the circulating cooling water tank. The heating rod is fixed inside the circulating cooling water tank. The water inlet of the flowmeter is connected to the circulating water pump. The water outlet of the flowmeter is connected to the water inlet of the five-port glass tube. The water outlet of the five-port glass tube is connected to the circulating cooling water tank. The working electrode the reference electrode, and the auxiliary electrode are connected to the electrochemical workstation; and the electrochemical workstation is connected to a host computer. | 10-31-2013 |
| 20140014510 | Two-electrode Corrosion Probe - A two-electrode corrosion probe having a probe shaft and a probe head connected to the probe shaft, a counter-electrode, a replaceable working electrode which is arranged at a distance from the counter-electrode between the probe shaft and the probe head. The probe also includes a first contact-making element and a second contact-making element which are arranged in the probe shaft, where the probe head is formed from a sleeve body and has a supporting structure to which the counter-electrode is fastened. The first contact-making element is electrically connected to the working electrode and the second contact-making element is electrically connected to the counter-electrode via a connecting element. | 01-16-2014 |
| 20140069810 | Electrochemical Corrosion Potential Sensor - An electrochemical corrosion potential sensor has a sensor unit, a lead wire and a quasi-reference electrode. A sensor unit includes a tube-shaped insulator, a tube-shaped metal casing joined to an end portion of the insulator, and a Pt electrode joined to another end portion of the insulator. A lead wire connected to the Pt electrode passes through the insulator and the metal casing. The quasi-reference electrode disposed in the metal casing is made of a less noble metal and electrically connected with the lead wire. | 03-13-2014 |
| 20140318959 | Electrochemical Probe with Coated, Fingered Electrodes for Corrosion Monitoring in Oil-Water Mixtures and Gas Systems Containing Hydrogen Sulfide - Electrochemical probes for corrosion monitoring in an environment that may cause the formation of electron conducting deposits and the method for making such probes were disclosed. The probes have exposed fingered electrodes. Except for the sensing areas at the tip sections, all surfaces of the exposed electrodes are coated with an inner electrically insulating coating or tubing and one or more additional coating(s) or tube(s). One of the additional coatings is ion conducting. The electrodes are spaced such that there are gaps between the outer surfaces of the neighboring electrodes to prevent the formation of a continuously distributed electron conducting deposits between the sensing surface of one electrode and the sensing surfaces of the other electrodes. These probes are especially suitable for applications in gas systems and oil-water mixtures containing hydrogen sulphide (H | 10-30-2014 |
| 20150060273 | Corrosion Resistance Evaluators - A corrosion resistance evaluator is provided for evaluating corrosion resistance of coated metals substrates, such as autobodies, at an accelerated rate. The evaluator includes a chamber for retaining an electrolyte that is exposed to an anode and cathode coated with protective coating being tested. These anode and cathode coatings are provided with predetermined and standardized defects, such as micro-holes, to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The evaluator further comprises an anode holder and a cathode holder for testing the corrosion resistance of the anode and cathode coatings. The evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days). | 03-05-2015 |
| 20150096889 | CORROSION MONITORING DEVICE OF REINFORCED CONCRETE CONSTRUCTION - Provided herein is a device for monitoring corrosion of steel for a steel concrete construction, the device including a battery provided with a first electrode, a second electrode made of a metal material having a higher electric potential than concrete steel reinforcement and spaced from the first electrode, and an electrolyte contacting the second electrode and first electrode and providing a path for ions to pass, the battery disposed inside the steel concrete construction and configured to collect electric energy generated through oxidation/reduction, that is a corrosion process of steel reinforcement; a capacitor electrically connected to the battery and configured to store electric energy; and an electric charge measurer configured to measure an amount of electric energy storage of the capacitor. | 04-09-2015 |
| 20160091413 | SENSOR FOR MONITORING CORROSION AND METHOD OF MANUFACTURING THE SAME - There are provided a sensor for monitoring corrosion, including: a sensor case, and a probe unit installed on one side of an interior of the sensor case and simultaneously measuring deterioration in a coating film of a structure and a rate of consumption of a sacrificial anode of the structure, and a method of manufacturing the same. | 03-31-2016 |
