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| Number | Title | Issue Date |
| 7429371 | Reversible oxidation of carbon nanotubes Carbon nanotubes have been reversibly and readily oxidized and reduced with common chemicals in solution, thereby allowing the nanotubes to be used as catalysts for chemical reactions and as stable charge storage devices. ... | 09/30/2008 |
| 7361257 | Electrochemical screening system Devices and methods for evaluating an electrochemical reaction are disclosed. A device includes an electrochemical cell having a cavity for containing a liquidus electrolyte, a first working electrode having at least one electrolytic surface at least partially withi... | 04/22/2008 |
| 7189341 | Electrochemical sensor ink compositions, electrodes, and uses thereof The invention is directed to conductive polymer compositions, catalytic ink compositions (e.g., for use in screen-printing), electrodes produced by deposition of an ink composition, as well as methods of making, and methods of using such compositions and electrodes.... | 03/13/2007 |
| 6808619 | Electrode system In an electrode system, particularly for electrochemical sensors, which comprises a working electrode, a counterelectrode and an electrolyte, the counterelectrode is constituted by a material containing an elementary carbon, whereby the long-term stability of the el... | 10/26/2004 |
| 6613218 | Methods for estimating adsorption isotherms in electrochemical systems The present invention provides a technique for enhancing electrocatalysis in electrochemical systems. Electrochemical impedance spectroscopy is performed for an electrode/electrolyte system at an intermediate frequency. Using an appropriate equivalent cir... | 09/02/2003 |
| 6584827 | Electrochemical gas sensor with diamond electrode An electrochemical gas sensor for detecting a specific gas being measured with a plurality of electrodes (21, 3, 4), an electrolyte (7) and a gas-permeable membrane (9) has a reduced cross sensitivity with respect to interfering gases, a short response ti... | 07/01/2003 |
| 6413398 | Method for electrochemical detection A method for electrochemical detection (ECD) is disclosed. The illustrated embodiments are particularly adapted to use in detection of analytes separated by capillary electrophoresis. The method is a voltammetric ECD, including a preparatory positive pote... | 07/02/2002 |
| 6411667 | Banded ECP sensor An ECP sensor includes a tubular ceramic probe having a closed tip at one end packed with a metal and metal oxide powder. A metal support tube receives an opposite end of the probe, and is joined thereto by a braze joint therewith. An electrical conductor... | 06/25/2002 |
| 6370213 | Banded ECP sensor An ECP sensor includes a tubular ceramic probe having a closed tip at one end packed with a metal and metal oxide powder. A metal support tube receives an opposite end of the probe, and is joined thereto by a braze joint therewith. An electrical conductor... | 04/09/2002 |
| 6309535 | Electrodes and their use in assays An electrode comprises a non-conductive substrate and a conductive layer comprising, in a bonded matrix, graphite particles coated with a noble metal, and carbon particles, wherein the graphite particles are up to 20 μm is size and have a surface area of... | 10/30/2001 |
| 6261440 | Interference free biosensor Provided are microparticle forms of carbon, carbon catalysts and carbon-containing electrically conductive materials which are covalently linked to peroxidase. The carbon:peroxidase conjugates are suitable for use as substrates in conventional electrodes.... | 07/17/2001 |
| 6251244 | Electrochemical measuring cell for detecting hydride gases The invention is directed to an electrochemical measuring cell for detecting hydride gases, preferably arsine and phosphine. The measuring cell includes at least one working electrode (3) made of a catalytically inactive material and a reference electrode... | 06/26/2001 |
| 6132955 | Method for derivitizing electrodes and assay methods using such derivitized electrodes An electrode can be derivitized by contacting it with a derivitizing solution to make it more sensitive to a desired analyte signal as opposed to interfering signals in an assay. Particularly, in an electrochemiluminescence (ECL) immunoassay the working e... | 10/17/2000 |
| 6106692 | Measuring concentrations of plural target substances by use of diamond electrode There is provided a concentration sensor for measurement of concentrations of one or plural target substances in a system, with a detection electrode of conductive diamond. The measuring method with the concentration sensor involves measuring the reaction... | 08/22/2000 |
| 6090269 | Determination of chromium A highly sensitive assay for the determination of Cr(VI), in the presence of Cr(III) and in the presence of other cations by cyclic voltammetry. The determination is carried out with a gold or gold-plated electrode with a self-assembled monolayer of a pyr... | 07/18/2000 |
| 5932079 | Electrochemical multigas sensor An electrochemical measuring cell for the simultaneous detection of different gas components in a gas sample, with a plurality of measuring electrodes (4, 5, 6) behind a diffusion barrier (7), with a common reference electrode (8) and counterelectrode (9)... | 08/03/1999 |
| 5846398 | CMP slurry measurement and control technique Chemical mechanical polishing slurry characteristics, such as oxidant concentration and abrasive particle dispersion, are determined using electrochemical measurement techniques, such as chronoamperometry, amperometry, chronopotentiometry, ionic conductiv... | 12/08/1998 |
| 5759368 | Electrochemical gas sensor An electrochemical gas sensor with at least two electrodes, with an electrode holder and with an electrolyte in a housing made of an electrolyte-impermeable material is improved in terms of its ease of handling and durability, without compromising the qua... | 06/02/1998 |
| 5753101 | Method of monitoring constituents in conversion coating baths A method for monitoring the constituents present in conversion coating bath solutions. The method involves using specific ac and dc voltammetry and using platinum or other noble metal working electrodes. First, a selected dc potential is applied to a work... | 05/19/1998 |
| 5624546 | Method and apparatus for the detection of toxic gases A compact electrochemical cell utilized for the detection of numerous toxic gases. The cell includes working and counter electrodes, surrounded by a liquid electrolyte, all of which is enclosed behind a gas permeable, hydrophobic membrane. The working ele... | 04/29/1997 |
| 5571394 | Monolithic sensor switch for detecting presence of stoichiometric H2 /O2 ratio in boiling water reactor circuit An electrode probe for measuring the electrochemical potential of a surface at a location of interest in a boiling water reactor. The probe has a monolithic sensor configuration built into a single stainless steel mineral insulated (MI) cable. This monoli... | 11/05/1996 |
| 5512489 | Microelectrodes and amperometric assays A photo-ablation technique is used to create apertures (4) in a layer (2) of electrically insulating material and allow electrically conducting material (3) exposed through the apertures to create a microelectrode. The microelectrode can be used for assay... | 04/30/1996 |
| 5503719 | Extended use planar sensors A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except those portions which define a working electrode and at least o... | 04/02/1996 |
| 5496451 | Method for detecting chemical substances On the bottom face of a measurement section, measurement electrodes and a reference electrode are formed and a solution supply pipe is opened. Then, if a predetermined electrolytic solution is supplied from the solution supply pipe, the electrolytic solut... | 03/05/1996 |
| 5490916 | Capillary reference half-cell The present invention is a reference half-cell electrode wherein intermingling of test fluid with reference fluid does not affect the performance of the reference half-cell over a long time. This intermingling reference half-cell may be used as a single o... | 02/13/1996 |
| 5488300 | Method and apparatus for monitoring the state of charge of a battery A method of monitoring ion mobility in an electro-conductive fluid, such as an electrolyte in a lead-acid battery to determine the state of charge of the battery, includes the steps of immersing a pair of test electrodes in the electro-conductive fluid, a... | 01/30/1996 |
| 5481181 | Real-time toxic metals monitor device and method An device for monitoring workplace air comprises a monitor cell comprising a base and a removable assembly. The removable assembly comprises (1) a flat, electrically insulating substrate having a first surface, (2) an electrolyte cell having an anode and ... | 01/02/1996 |
| 5462645 | Dialysis electrode device A dialysis electrode device comprises a shank of needle-like proportions and formed from a hollow dialysis fiber membrane. The shank is closed at its distal end by a sealing plug and, at its proximal end, it is sealed to and in communication with an auxil... | 10/31/1995 |
| 5429727 | Electrocatalytic cermet gas detector/sensor An electrocatalytic device for sensing gases. The gas sensing device includes a substrate layer, a reference electrode disposed on the substrate layer comprised of a nonstoichiometric chemical compound enabling oxygen diffusion therethrough, a lower refer... | 07/04/1995 |
| 5417821 | Detection of fluids with metal-insulator-semiconductor sensors A MIS diode sensor having a Pd/Cu alloy electrode is sensitive to and can detect CO, H2, C2 H2 and C2 H4. An array of MIS diode sensors having varying electrode compositions can indicate a fault in an... | 05/23/1995 |
| 5391270 | Detection and measurement of heavy metals Disclosed herein is an improved method for measuring the presence and amount of a variety of metals contained in a sample. In the first step, all of the various forms of each metal are converted to a soluble metallic complex which is capable of being elec... | 02/21/1995 |
| 5389215 | Electrochemical detection method and apparatus therefor In an electrochemical detection method using an apparatus including a first vessel and a second vessel, a reference electrolytic solution in the second vessel, first and second closely spaced working electrodes immersed in a sample solution for measuremen... | 02/14/1995 |
| 5368706 | Amperometric detection cell An improved electrochemical detection cell comprising a palladium reference electrode.... | 11/29/1994 |
| 5350500 | Electrokinetic potential measurement The measurement of electrokinetic potential is of importance in paper-making. A measuring cell (12) for a specific potential known as streaming potential of the kind disclosed in EP B1 0 079 726 is now provided with measuring electrodes (40, 42) of a meta... | 09/27/1994 |
| 5324400 | Electrode preconditioning method for a plating bath monitoring process A method of preconditioning an electrode for use in a plating bath monitoring process. The method involves applying at least one anodic signal to an electrode in contact with the plating bath solution in order to yield a reproducibly clean and stabilized ... | 06/28/1994 |
| 5298132 | Method for monitoring purification treatment in plating baths A method for monitoring the status of a plating bath purification treatment cycle. The method involves applying a swept dc measurement signal to a pretreated electrode which is in contact with the plating solution, and monitoring the resultant response cu... | 03/29/1994 |
| 5275704 | Method and apparatus for measuring underdeposit localized corrosion rate or metal corrosion rate under tubercles in cooling water systems A method and apparatus is provided for measuring underdeposit localized corrosion rate of a metal structure under differential flow conditions encountered in actual cooling water systems. A first electrode defining a slow flow electrode is immersed in an ... | 01/04/1994 |
| 5264103 | Biosensor and a method for measuring a concentration of a substrate in a sample The present invention provides a biosensor comprising an electrical insulating substrate, a main electrode system formed on the substrate and having a working electrode and a counter electrode, a reaction layer provided in contact with or in the vicinity ... | 11/23/1993 |
| 5252192 | Electrolytic pump An apparatus and method for producing an adjustable constant flow of electrochemical fluid. The apparatus is designed for use in an in-tank electrochemical plating bath sensor. The apparatus and method utilize pumping electrodes placed within an electrode... | 10/12/1993 |
| 5221445 | Method for determining identification and concentration of an atmospheric component Apparatus and method for determining the identity and concentration of a component in a test atmosphere having a known concentration of oxygen. At least one solid electrolyte oxygen sensor is used, with each sensor having a solid electrolyte wall in conta... | 06/22/1993 |
