| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205790500 | For properties of solid material (e.g., surface area, etc.) | 28 |
| 20090045075 | ELECTRICAL CASED WELL-LOGGING METHOD - The invention relates to the geophysical examination of wells and can be used for determining the electrical resistivity of rock beds surrounding a well cased in a metal column. The inventive method consists in using a sonde embodied in the form of two current electrodes located on the opposite sides with respect of at least thee measuring electrodes, in alternately supplying electric current, in measuring, by means of a measuring devices, during each current supply, a supplied current, a potential on a central measuring electrode and the potential difference between the outer measuring electrodes and the central electrode, in using the specific electrical resistivity of the rock beds surrounding the cased well in the form of the electrical parameter of the electrical logging of the cased wells, in forming a measuring circuit according to the resistivity pattern of the layers of the rock beds surrounding the well and of those sections of a casing string which are provided with the collars, wherein the sonde, whose measuring electrodes are spaced without respecting equidistance requirements and current electrodes are embodied in such a way that they can be used in the form of measuring electrodes is applied. In addition, the inventive method also consists in measuring the potential difference of an electric field between the current electrode, to which the current is not supplied at the present switching, and the central measuring electrode, by means of additional measuring devices, and in determining a specific electrical resistivity according to a formula referred thereto. | 02-19-2009 |
| 20090065371 | Method and Apparatus for Metal Nanoparticle Electrocatalytic Amplification - The present invention includes methods, compositions and kits for analyzing a chemical analyte having an electrochemical cell connected to a measuring apparatus. The electrochemical cell contains a solution having one or more nanoparticles, one or more chemical analytes, an indicator. In addition, the electrochemical cell contains one or more electrodes in communication with the solution. One or more electrocatalytic properties are generated by the interaction of the one or more nanoparticles and the liquid sample and measured at the one or more electrodes. | 03-12-2009 |
| 20090308762 | METHOD AND DEVICE FOR TESTING THE TIGHTNESS OF MOISTURE BARRIERS FOR IMPLANTS - Disclosed herein are devices and methods useful for measuring the imperviousness of moisture barriers in implants by means of electrochemical, integrative measurement of small electric charges. Using the devices and methods, the integrity or imperviousness of insulating layers or moisture barriers of implants can be verified more exactly, and the influence of electromagnetic interferences on the measurement can be reduced. | 12-17-2009 |
| 20090321280 | Membrane Transducer Surface Contact Sensor - A surface-contact sensor includes a housing defining an opening, an ion-permeable membrane at the opening, a counterelectrode within the housing, and a reference electrode within the housing that is spaced apart from the current-collector. A current-collector pad includes a grommet support having a base and a lumen defining an opening. An ion-permeable membrane spans at least a portion of the opening of the grommet. The ion-permeable membrane is held in place by a gasket surrounding the lumen. A current collector, at least in one embodiment, is proximate to a portion of the ion-permeable membrane that spans the opening. | 12-31-2009 |
| 20100147707 | ANIONICALLY-CHARGED POLYMER DETECTION METHOD - An electrochemical method for measuring the concentration of an anionically-charged and non-electroactive polymer in an aqueous solution is provided. The method comprises immobilizing a cationic dye material on an electrically conductive substrate form a working electrode; contacting the working electrode with the aqueous solution including the anionically-charged and non-electroactive polymer to be measured, and transmitting electrical power to the working electrode; measuring a current of the working electrode under a determined electric potential; and calculating a concentration or quantity of the anionically-charged polymer in the aqueous solution according to the measured current of the working electrode. | 06-17-2010 |
| 20100163433 | METHOD AND DEVICE FOR MEASURING THE CONDITION OF STEEL STRUCTURES - Method and apparatus for measuring parameters in ferromagnetic steel structures, e.g. railway rails and drill pipes, to detect mechanical stress, damage and deterioration. On the monitored structure, devices for magnetization or demagnetization e.g. an electromagnet, will be installed. Two or more electrodes for feeding of a pulse shaped electrical voltage are installed. Across another pair of electrodes, a voltage response signal is measured, and compared with another response signal measured under known conditions or compared with calibration data for the structure. The deviation between these voltages is analyzed to quantify the relative or absolute deviations, and the condition of the steel structure is estimated. The device can measure the transient voltage curves with reference to one or more of the magnetization curves and includes algorithms for analyzing the voltage response curve for determination of mechanical stress and/or fatigue and/or cracks and/or metal loss in steel materials. | 07-01-2010 |
| 20100187132 | Determination of the real electrochemical surface areas of screen printed electrodes - A method is provided for determining a real electrochemical surface area of a working electrode (WE) of a screen printed sensor. A concentration of a mediator incorporated in a WE paste is determined. The diffusion coefficient of the mediator is then ascertained. A final real electrochemical surface area of the WE is then made. | 07-29-2010 |
| 20110147233 | ELECTRICAL CASED WELL-LOGGING METHOD - The invention relates to the geophysical examination of wells and can be used for determining the electrical resistivity of rock beds surrounding a well cased in a metal column. The inventive method consists in using a sonde embodied in the form of two current electrodes located on the opposite sides with respect of at least thee measuring electrodes, in alternately supplying electric current, in measuring, by means of a measuring devices, during each current supply, a supplied current, a potential on a central measuring electrode and the potential difference between the outer measuring electrodes and the central electrode, in using the specific electrical resistivity of the rock beds surrounding the cased well in the form of the electrical parameter of the electrical logging of the cased wells, in forming a measuring circuit according to the resistivity pattern of the layers of the rock beds surrounding the well and of those sections of a casing string which are provided with the collars, wherein the sonde, whose measuring electrodes are spaced without respecting equidistance requirements and current electrodes are embodied in such a way that they can be used in the form of measuring electrodes is applied. In addition, the inventive method also consists in measuring the potential difference of an electric field between the current electrode, to which the current is not supplied at the present switching, and the central measuring electrode, by means of additional measuring devices, and in determining a specific electrical resistivity according to a formula referred thereto. | 06-23-2011 |
| 20120145564 | FUEL CELL EVALUATOR AND FUEL CELL EVALUATION METHOD - In one embodiment, there is provided a fuel cell evaluator for evaluating a characteristic of a fuel cell based on a frequency characteristic of impedance of the fuel cell. The evaluator includes: an impedance acquisition unit configured to acquire impedances of the fuel cell for a certain current value in a Tafel region by changing a measurement frequency; an extraction unit configured to extract a reaction resistance from the acquired impedances; a calculator configured to calculate the product of the reaction resistance and the certain current value; and an indicator configured to indicate the product calculated by the calculator as the frequency characteristic of the impedance of the fuel cell. | 06-14-2012 |
| 20130032495 | SCANNING ELECTROCHEMICAL MICROSCOPY - A new scanning electrochemical microscopy tip positioning method that allows topography and surface activity to be resolved independently is presented. A SECM tip is oscillated relative to the surface of interest. Changes in the oscillation amplitude, caused by the intermittent contact of the SECM tip with the surface of interest, are used to detect the surface of interest, and as a feedback signal for various types of imaging. | 02-07-2013 |
| 20130140191 | PIPETS CONTAINING ELECTROLYTE AND ELECTRODES - Apparatus comprises a pipet comprising first and second channels separated by a septum and having a tip at which each of the first and second channels is open; an electrolyte solution contained within both the first and second channels of the pipet; a first electrode extending into the electrolyte in the first channel of the pipet; a second electrode extending into the electrolyte in the second channel of the pipet; means for applying a potential difference between the first and second electrodes; means for measuring alternating current components of a current flowing to or from the first electrode; means for applying an oscillatory perturbation to the pipet; and means responsive to the alternating current measured to be flowing to or from the first electrode to adjust a position of the pipet such as to control a separation between the tip of the pipet and a surface of interest. | 06-06-2013 |
| 20150114849 | DURABILITY TEST DEVICE OF MEMBRANE ELECTRODE ASSEMBLY AND DURABILITY TEST METHOD THEREOF - A durability test device that examines durability of a membrane electrode assembly used for a polymer electrolyte fuel cell includes: a voltage application device that applies a voltage from one surface of the membrane electrode assembly to the other surface thereof; a current measurement device that measures a current flowing from the one surface to the other surface by the application of the voltage; and a control section that controls the voltage application device to apply the voltage to the membrane electrode assembly while sweeping the voltage over a plurality of consecutive voltage regions in such a manner that a first sweep rate of the voltage to be applied in the first voltage region in which a measured current value includes a peak caused due to carbon oxidation is set lower than that in the second voltage region that does not include the first voltage region. | 04-30-2015 |
| 20150129436 | SCANNING ELECTROCHEMICAL MICROSCOPY - A method of controlling a scanning electrochemical microscopy probe tip comprising the following steps: oscillating the scanning electrochemical microscopy probe tip relative to the surface of interest; moving the oscillating scanning electrochemical microscopy probe tip towards the surface of interest; detecting damping of an amplitude of the oscillation of the scanning electrochemical microscopy probe tip resulting from the scanning electrochemical microscopy probe tip coming into contact with the surface of interest at the first location; using the detected damping to detect the surface of interest; retracting the scanning electrochemical microscopy probe tip away from the surface of interest without first translating the scanning electrochemical microscopy probe tip along the surface of interest whilst the scanning electrochemical microscopy probe tip is in intermittent contact with the surface of interest. The method further comprises measuring electrochemical signals produced at the oscillating scanning electrochemical microscopy probe tip whilst moving the oscillating scanning electrochemical microscopy probe tip towards and/or away from the surface of interest. | 05-14-2015 |
| 20150293048 | CHEMOMETRIC ANALYSIS OF CHEMICAL AGENTS USING ELECTROCHEMICAL DETECTION AND CLASSIFICATION TECHNIQUES - Methods, systems, and devices are disclosed for the identification of chemical agents and determination of their level of exposure using electrochemical detection and advanced signal processing. In one aspect, a method includes collecting a sample from a surface containing a chemical agent to an electrode on a sensor such that the chemical agent transfers on the electrode, detecting an electrochemical signal of the chemical agent on the electrode to transduce chemical information associated with the chemical agent to an electrical signal, processing the electrical signal to obtain electrochemical spectral signature data to identify the chemical agent and generating a series of coefficients of the electrochemical spectral signature data to reduce the data, and classifying the chemical information based on the series of coefficients among preselected data sets to determine a level of exposure to the chemical agent. | 10-15-2015 |
| 20150346142 | DETERMINATION OF THE REAL ELECTROCHEMICAL SURFACE AREAS OF SCREEN PRINTED ELECTRODES - A method is provided for determining a real electrochemical surface area of a working electrode (WE) of a screen printed sensor. A concentration of a mediator incorporated in a WE paste is determined. The diffusion coefficient of the mediator is then ascertained. A final real electrochemical surface area of the WE is then made. | 12-03-2015 |
| 20160025669 | STRETCHABLE IONICS FOR TRANSPARENT SENSORS AND ACTUATORS - A class of devices enabled by ionic conductors is highly stretchable, fully transparent to light of all colors, biocompatible or biodegradable, and capable of operation at frequencies beyond 10 kilohertz and voltages above 10 kilovolts. These devices enabled by ionic conductors can be used as large strain actuators, full-range loudspeakers, as strain or pressure sensors and as stretchable interconnects. The electromechanical transduction is achieved without electrochemical reaction. When large stretchability and high optical transmittance are required, the ionic conductors have lower sheet resistance than all existing electronic conductors. | 01-28-2016 |
| 20160061775 | Method for the Extraction and Electrochemical Detection of Explosives and Explosive Components in Soils Using Electrodes, Filter Paper, and Electrolyte - Described herein is an approach using inexpensive, disposable chemical sensor probes that can be mounted on a small unmanned aerial vehicles (UAVs) and used to analyze a site (such as one known or suspected to contain explosive residue, spilled material or contaminated soil) without the need for a person to conduct ground operations at the site. The method involves contacting a soil or a surface with a filter paper wetted with a solvent, then subjecting the filter paper to voltammetry and/or spectroscopy, thus detecting a possible variation indicative of one or more analytes, wherein the solvent is selected from the group consisting of polar aprotic or protic solvents having a boiling point of at least 100° C., room temperature ionic liquids, and deep eutectic solvents. | 03-03-2016 |
| 205791000 | Of coating or coated substrate (e.g., thickness, bonding strength, etc.) | 9 |
| 20090026093 | CATHODIC DELAMINATION ACCELERATED LIFE TEST METHOD - A method for conducting an accelerated life test of a polymer coated metallic sample includes placing the sample below the water surface in a test tank containing water and an oxygen containing gas. Cathodic polarization of the metallic portion of the sample is increased. This can be by using a voltage source or a sacrificial anode. Dissolved oxygen in the test tank water is also increased. Dissolved oxygen can be increased by providing oxygen under pressure to the tank or through an aerator under the water surface. Temperature can also be regulated to accelerate the test speed. Delamination of the sample is periodically tested through a peel test or by other means. The invention also provides a reaction model independent method for calculating activation energy. | 01-29-2009 |
| 20090205978 | MEASURING DEVICE FOR PERMEATION RATE OF WATER AND OXYGEN OF PROTECTIVE LAYER IN ORGANIC ELECTRONIC DEVICE AND MEASURING METHOD USING THE DEVICE - A device and method for measuring water and oxygen permeation rates of a protective layer in an organic electronic device are provided. The device includes: a glass substrate; a pair of electrode layers facing each other and deposited on the glass substrate; a calcium layer deposited on the glass substrate; a water and oxygen permeable substrate deposited on the calcium layer; a target protective layer of an organic electronic device, which is deposited on the water and oxygen permeable substrate; and a sealing material applied along an edge of the target protective layer, wherein one ends of the pair of electrode layers are buried in the calcium layer and the other ends are electrically connected to an external resistance measuring device. | 08-20-2009 |
| 20090229997 | Sealing Ring Assembly and Mounting Method - A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid communication between a forward face of the holder and the central bore of the ring, directed parallel to but tangentially offset relative to the inner wall of the central bore so as to impart a degree of rotational flow to electrolyte entering the sealing ring through the or each secondary bore which effectively removes gas bubbles and refreshes the electrolyte. The holder facilitates ring removal with a much reduced risk of damage to the delicate sealing surface. | 09-17-2009 |
| 20100200431 | WAFER TEST METHOD AND WAFER TEST APPARATUS - The inventive concept provides a wafer test method and a wafer test apparatus. The wafer test method can recognize the amount of residuals generated in a sidewall of the metal-containing layer pattern and the extent of corrosion of a sidewall of the metal-containing layer pattern using the measured electric resistance by supplying an electrolyte so that the electrolyte is in contact with a portion of the metal-containing layer pattern in a predetermined chip region and measuring an electric resistance between a first electrode which is electrically in contact with the other portion of the metal-containing layer pattern and a second electrode which is in contact with the electrolyte in the predetermined region. Thus, a wafer test method and a wafer test apparatus can be embodied by an in-line method without dividing a wafer into each chip. | 08-12-2010 |
| 20110215003 | Method of Inspecting a Metal Coating and a Method for Analytical Control of a Deposition Electrolyte Serving to Deposit Said Metal Coating - For fast and secure determination of the quality of a metal coating as well as of an electrolyte for depositing a metal, in particular for electrolytic deposition of nickel such as of semi-gloss nickel and bright nickel and for analytical control of the deposition electrolyte, a method of inspecting a metal coating is provided, which involves the following method steps: a) depositing the metal coating from a deposition electrolyte onto a working electrode; b) electrolytically dissolving the metal coating through anodic polarisation of the working electrode with respect to a counter electrode, which is in electrolytic contact with the working electrode; c) recording an electrical dissolution potential at the working electrode over time, said potential occurring during a dissolution of the metal coating; and d) determining a time-averaged vale of the dissolution potential. | 09-08-2011 |
| 20130248382 | Selective Masking by Photolithography (SMP) for Making Electrochemical Measurements - A method for isolating microstructural regions or features on a surface for electrochemical experimentation comprising polishing a metal sample, coating the metal sample with a photoresist, selecting a region of interest of the metal sample, exposing the region of interest with light energy, developing the exposed photoresist and creating a developed region. | 09-26-2013 |
| 20140061064 | PALLADIUM COATING THICKNESS MEASUREMENT - The thickness of a palladium coating on copper (or another substrate) is measured by passing a cathodic current through a predetermined area of the coating in contact with an electrolytic solution and measuring the potential as a function of time. Protons from the electrolytic solution are electrochemically reduced to palladium hydride at cathodic potentials less negative than required for evolution of hydrogen. As formation of the PdH | 03-06-2014 |
| 20140174954 | DETECTION OF DEFECTS IN SOLID-POLYMER COATINGS USING REDUCTION-OXIDATION PROBES - Electrochemical methods for probing solid polymer electrolyte surface coatings on electrically conducting, active, three-dimensional electrode materials for use in lithium-ion batteries, to quantitatively determine the conformity, uniformity, and the presence of pinholes, and/or other defects in coatings, without requiring the detachment of the coating from the electrode or otherwise inducing damage to the coating, are described. Coated electrodes are submersed in an electrolyte solution containing a redox-active probe species which does not induce electrochemical damage to either the working electrode or the solid polymer electrolyte surface coating. For coated Cu | 06-26-2014 |
| 20160123865 | HYDROGEL COMPOSITIONS AND METHODS FOR ELECTROCHEMICAL SENSING - Embodiments of hydrogels for electrochemical sensing, electrodes comprising the hydrogels, and methods of making and using the hydrogels are disclosed. The disclosed hydrogel electrodes comprise a cross-linked poly(acrylic acid-co-2-acrylamido-2-methyl-1-propanesulfonic acid (poly(AA-AMPS)) hydrogel and an electrical contact. | 05-05-2016 |
| 205791500 | Defects | 2 |
| 20130068633 | SYSTEM AND METHOD FOR MEASURING AN ANALYTE IN A SAMPLE - Methods of determining a corrected analyte concentration in view of some error source are provided herein. The methods can be utilized for the determination of various analytes and/or various sources of error. In one example, the method can be configured to determine a corrected glucose concentration in view of an extreme level of hematocrit found within the sample. In other embodiments, methods are provided for identifying various system errors and/or defects. For example, such errors can include partial-fill or double-fill situations, high track resistance, and/or sample leakage. Systems are also provided for determining a corrected analyte concentration and/or detecting some system error. | 03-21-2013 |
| 20150300973 | ELECTRO-FLUIDIC FLOW PROBE - An apparatus for an electro-fluidic flow probe includes a body portion including an electro-fluidic bias tee for receiving (i) a fluid electrolyte and (ii) an electrical connection for providing an electrical potential to the fluid electrolyte; a first inlet including a tube extending from the first inlet to an outlet through the electro-fluidic bias tee; and a second inlet including the electrical connection having a wire that extends from the second inlet to the outlet through the electro-fluidic bias tee to transfer the electrical potential to a device under test. | 10-22-2015 |
