And Noble Metal (i.e., Ru, Rh, Pd, Os, Ir, Pt, Ag, Or Au) Or Compound Containing Patents (Class 204/290.06)
  • Patent number: 9304100
    Abstract: A miniaturised electrochemical sensor for detection of a component in a gas is provided. The sensor comprises a reference electrode, a counter electrode and a structure comprising a plurality of passages delineated by walls extending along the passages. A working electrode covers the walls of the structure and a layer of an ionomer covers at least part of the working electrode along the walls of the structure. The layer of ionomer is in ion conducting contact with the electrodes. The disclosure further relates to a method of fabricating a miniaturised electrochemical sensor and to a device for measuring content of NO in exhaled breath comprising such a miniaturised electrochemical sensor.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: April 5, 2016
    Assignee: AEROCRINE AB
    Inventors: Niclas Roxhed, Goran Stemme, Hithesh K. Gatty
  • Patent number: 8608917
    Abstract: A reference electrode for improving a product life cycle without using a gelled hydrophobic ionic liquid having a prescribed hardness or viscosity and without having a large thickness so as to be difficult to manufacture is provided. The reference electrode is provided with a housing for accommodating an internal electrode, a filler for electrically connecting the internal electrode, and a sample liquid. The filler is formed having a layer between the internal electrode and an opening formed in the housing for contacting the sample liquid and the filler. The filler includes a first layer including a water soluble electrolytic solution formed to be in contact with the internal electrode a second layer including a hydrophobic ionic liquid formed to be in contact with the first layer; and a third layer including a gelled hydrophobic ionic liquid formed in the opening so as to be in contact with the second layer.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: December 17, 2013
    Assignee: HORIBA, Ltd.
    Inventors: Manabu Shibata, Yasukazu Iwamoto
  • Patent number: 8480863
    Abstract: The invention relates to an electrode for electrolytic applications, optionally an oxygen-evolving anode, obtained on a titanium substrate and having a highly compact dual barrier layer comprising titanium and tantalum oxides and a catalytic layer. A method for forming the dual barrier layer comprises the thermal decomposition of a precursor solution applied to the substrate optionally followed by a quenching step and a lengthy thermal treatment at elevated temperature.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 9, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Andrea Francesco Gullá, Sobha Abraham
  • Patent number: 8083921
    Abstract: An electrode for high overvoltage oxygen anodic evolution is described comprising a substrate of titanium or other valve metal, a first protective interlayer containing valve metal oxides, a second interlayer containing platinum or other noble metal, and an outer layer comprising tin, copper and antimony oxides. The electrode of the invention may be employed as anode in waste water treatment.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: December 27, 2011
    Assignee: Industrie de Nora S.p.A.
    Inventor: Paolo Rossi
  • Patent number: 7914653
    Abstract: Disclosed is an anode for electrochemical reactions, such as electrolysis and electrodeposition, comprising a titanium substrate covered with metal oxide, in which the amount of platinum group element(s) is decreased in comparison with the ordinary anode of platinum group element oxides so as to decrease the cost and to mitigate the problem of natural resources, and further, durability of the anode is improved. The electrocatalyst of the anode is multiple oxide of platinum group element(s), and Sn and Sb. The cationic ratio of Sn to Sb is 1-40 and the sum of Sn and Sb is 1-90 cationic %. The electrocatalyst is prepared by coating mixed solutions of the soluble salts on the substrate and baking, so as to convert the metal salts to metal oxides.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 29, 2011
    Assignees: Koji Hashimoto, Daiki Ataka Engineering Co., Ltd.
    Inventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
  • Patent number: 7811426
    Abstract: Disclosed is an oxygen evolution anode for evolving oxygen without chlorine evolution in electrolysis of aqueous solutions of sodium chloride having high performance and durability with decreased amount of the precious metal(s) in the intermediate layer to decrease manufacturing cost and to ease problem of the resources. The oxygen evolution anode comprises an electroconductive substrate, an intermediate layer and an electrocatalyst. The intermediate layer prepared by calcination consists of multiple oxide of the platinum group element(s), Sn and Sb, with the Sn/Sb ratio of 1-40 and with the sum of Sn and Sb of 90 cationic % or less. The electrocatalyst is prepared by anodic deposition and consists of 0.1-3 cationic % of Sn, 0.2-20 cationic % of Mo and/or W and the balance of Mn.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: October 12, 2010
    Assignees: Daiki Ataka Engineering Co., Ltd.
    Inventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
  • Patent number: 7803260
    Abstract: Disclosed is an oxygen evolution electrode for formation of only oxygen without formation of chlorine at anode in the performance and the durability of the anode is so high that they are, even in strong acid, at the same level as that in neutral solution. The electrode is prepared by anodic deposition of multiple oxide consisting of Mn—Mo—Sn, Mo—W—Sn or Mn—Mo—W—Sn on an IrO2-coated titanium substrate. The multiple oxide are composed of Mn as the main component, 0.1-3 cationic % of Sn and 0.2-20 cationic % of Mo and/or W.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: September 28, 2010
    Assignees: Daiki Ataka Engineering Co., Ltd., Koji Hashimoto
    Inventors: Koji Hashimoto, Ahmed Abd El-Moneim, Naokazu Kumagai
  • Patent number: 7070878
    Abstract: A layered oxygen electrode incorporating a peroxide decomposition catalyst. The design of the oxygen electrode promotes oxygen dissociation and absorption within the oxygen electrode. The oxygen electrode has differing layers of hydrophobicity which allow chemical impregnation of the active catalyst material into the oxygen electrode where the active catalyst material is needed most.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: July 4, 2006
    Assignee: Ovonic Fuel Cell Company LLC
    Inventors: Srinivasan Venkatesan, Hong Wang, Stanford R. Ovshinsky, Boyko Aladjov, Subhash Dhar
  • Patent number: 6835489
    Abstract: A double layered oxygen electrode impregnated with an active catalyst material and method of making. The design of the oxygen electrode promotes oxygen dissociation and absorption within the oxygen electrode. The oxygen electrode has differing layers of hydrophobicity which allow chemical impregnation of the active catalyst material into the oxygen electrode where the active catalyst material is needed most.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: December 28, 2004
    Assignee: Texaco Ovonic Fuel Cell LLC
    Inventors: Srinivasan Venkatesan, Hong Wang, Boyko Aladjov, Subhash Dhar, Stanford R. Ovshinsky
  • Patent number: 6815390
    Abstract: The present invention relates to a new catalyst system for fluorous biphasic catalysis processes which comprises functionalized polymeric beads, monodisperse SiO2 or SiO2 flakes associated with the catalyst. These functionalized particles are used as a support for catalysts in fluorous biphasic catalysis (FBC).
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 9, 2004
    Assignee: Merck Patent GmbH
    Inventors: Julian F. S. Vaughan, Martin G. Pellatt, James Sherrington, Eric George Hope
  • Publication number: 20040108205
    Abstract: Described are preferred electrode structures which desirably include multiple thin conductive layers stably bonded to an electrode substrate through a bonding layer. Also described are preferred electrode structures which include reinforcing carbon layers, which include an embrittlement-sensitive material and a protective oxygen-free copper layer, and which include at least one thin metal layer including a bamboo grain pattern. Additional embodiments of the invention include electric cells incorporating such electrode structures, and methods for their operation.
    Type: Application
    Filed: March 26, 2002
    Publication date: June 10, 2004
    Inventor: Lewis G. Larsen
  • Patent number: 6733639
    Abstract: The invention relates to a gas diffusion electrode (1) comprising a hydrophobic gas diffusion layer (3b), a reaction layer (3a), and a hydrophilic layer (5) arranged in the mentioned order wherein the reaction layer (3a) is arranged to a barrier layer (4), which barrier layer (4), on its opposite side, is arranged to the hydrophilic layer (5). The invention also relates to a method for manufacturing such a gas diffusion electrode (1), and to an electrolytic cell, and use thereof.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: May 11, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Bernd Busse, Lars-Erik Bergman
  • Patent number: 6572758
    Abstract: An electrolytic cell producing sodium chlorate uses an electrode, specifically an anode, having a surface or coating or treatment of a mixed metal oxide having ruthenium oxide as an electrocatalyst, a precious metal of the platinum group or its oxide as a stability enhancer, antimony oxide as an oxygen suppressant and a titanium oxide binder. The electrocatalytic coating is about 21 mole percent ruthenium oxide, about 2 mole percent iridium oxide, about 4 mole percent antimony oxide and the balance is titanium oxide. The coating is characterized by high durability and low oxygen content in an off-gas.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: June 3, 2003
    Assignee: United States Filter Corporation
    Inventors: Vadim Zolotarsky, Irina A. Ivanter, Mark J. Geusic
  • Patent number: 6403999
    Abstract: Method and system for estimating a concentration of free electrons with a selected spin polarization in a semiconductor material. A static magnetic field and an electromagnetic field are impressed on the semiconductor, and free electrons are injected (through diffusion or tunneling) into the semiconductor material from a ferromagnetic material. Motion of the injected, spin-polarized electrons, within the semiconductor gives rise to a Hall voltage across the semiconductor. This voltage is measured at one or more spaced apart locations and analyzed to detect presence of, and estimate a concentration of, free electrons with a selected spin at at least one location within the semiconductor. Effects of an imposed stress, temperature, illumination or electromagnetic field on the semiconductor can be determined.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: June 11, 2002
    Assignee: Spinix Corporation
    Inventors: Robert O'Handley, Yi-Wun Li
  • Patent number: 6379526
    Abstract: A non-carbon metal-based anode of a cell for the electrowinning of aluminium comprising an electrically conductive metal substrate resistant to high temperature, the surface of which becomes passive and substantially inert to the electrolyte, and a coating adherent to the metal substrate making the surface of the anode electrochemically active for the oxidation of oxygen ions present at the electrolyte interface. The substrate metal may be selected from nickel, cobalt, chromium, molybdenum, tantalum and the Lanthanide series. The active constituents of the coating are for example oxides such as spinels or perovskites, oxyfluorides, phosphides or carbides, in particular ferrites. The active constituents may be coated onto the substrate from a slurry or suspension containing colloidal material and the electrochemically active material.
    Type: Grant
    Filed: July 15, 2000
    Date of Patent: April 30, 2002
    Assignee: Moltech Invent SA
    Inventors: Vittorio de Nora, Jean-Jacques Duruz
  • Publication number: 20010022275
    Abstract: The invention relates to a construction for ventilation of hydrogen gas comprising at least a first metallic layer (1), sensitive to hydrogen embrittlement, a second (2) metallic layer, and a mesh (4), wherein the first layer (1) is joined to the second layer (2), and said mesh (4), forming venting channels (5) through which channels (5) hydrogen can be vented, is joined to, and in between, said first (1) and second (2) metallic layers. The invention further concerns a method for production thereof.
    Type: Application
    Filed: December 21, 2000
    Publication date: September 20, 2001
    Inventors: Bo Hakansson, Eduardo Fontes, Magnus Davidsson, Hans-Goran Sundstrom, Lars Blomgren, Arne Carlsson
  • Patent number: 6254737
    Abstract: A combination coil and shield for a plasma chamber in a semiconductor fabrication system is provided. The coil-shield has a plurality of turns to couple energy efficiently into a plasma and also substantially blocks deposition material from reaching a second shield positioned behind the first shield.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: July 3, 2001
    Assignee: Applied Materials, Inc.
    Inventors: Sergio Edelstein, Mani Subramani
  • Patent number: 6251254
    Abstract: An electrode adapted for chromium plating from trivalent chromium baths which comprises a conductive base, an electrode material layer comprising iridium oxide formed thereon, and a porous layer formed on the surface of the electrode material layer. The porous can comprise an oxide containing at least one element selected from the group consisting of silicon, molybdenum, titanium, tantalum, zirconium, and tungsten. Use of this electrode for chromium plating reduces the oxidation of trivalent chromium into hexavalent chromium.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: June 26, 2001
    Assignee: Permelec Electrode Ltd.
    Inventors: Masaaki Katoh, Miwako Nara, Yukiei Matsumoto, Setsuro Ogata
  • Patent number: 6217729
    Abstract: The present invention provides an improved anode formulation and an improved method of manufacture. More specifically, the invention provides a tri-layer anode having an improved service life when used, for example, for steel strip electrogalvinizing. In one embodiment of the invention, the anode is comprised of a titanium substrate which is roughened and heat treated and subsequently coated with a first coating of iridium oxide/tantalum oxide. After the anode is heat treated, it is next coated, preferably by an electrodeposition process with a second coating of platinum. Finally, the anode is coated with a third coating of iridium oxide/tantalum oxide and subsequently heat treated.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: April 17, 2001
    Assignee: United States Filter Corporation
    Inventors: Vadim Zolotarsky, David B. Blum, Mark J. Geusic, Irina Ivanter
  • Patent number: 6203936
    Abstract: Thin, light weight bipolar plates for use in electrochemical cells are rapidly, and inexpensively manufactured in mass production by die casting, stamping or other well known methods for fabricating magnesium or aluminum parts. The use of a light metal, such as magnesium or aluminum minimizes weight and simultaneously improves both electrical and thermal conductivity compared to conventional carbon parts. For service in electrochemical cells these components must be protected from corrosion. This is accomplished by plating the surface of the light weight metal parts with a layer of denser, but more noble metal. The protective metal layer is deposited in one of several ways. One of these is deposition from an aqueous solution by either electroless means, electrolytic means, or a combination of the two. Another is deposition by electrolytic means from a non-aqueous solution, such as a molten salt.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: March 20, 2001
    Assignee: Lynntech Inc.
    Inventors: Alan J. Cisar, Oliver J. Murphy, King-Tsai Jeng, Carlos Salinas, Stan Simpson, Dacong Weng