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Hiroyuki Kurita

Hiroyuki Kurita, Tsukuba-Shi JP

Patent application numberDescriptionPublished
20100159350MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCTION THEREOF, AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly for a solid polymer fuel cell, which comprises a mutually opposing anode catalyst layer and cathode catalyst layer with a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer, wherein the anode catalyst layer and cathode catalyst layer each contain a catalyst and a hydrocarbon-based polymer electrolyte with an ion-exchange group. If the ion-exchange group density of the anode catalyst layer is represented as α [μeq/cm06-24-2010
20100159351MEMBRANE-ELECTRODE ASSEMBLY, AND MEMBRANE-ELECTRODE-(GAS DIFFUSION LAYER) ASSEMBLY AND SOLID POLYMER FUEL CELL EACH COMPRISING THE SAME - A membrane-electrode assembly 06-24-2010
20100167162MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCING THE SAME AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly comprising an anode catalyst layer and cathode catalyst layer placed each other, and a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer. The polymer electrolyte membrane comprises: a hydrocarbon-based polymer electrolyte, and the anode catalyst layer and cathode catalyst layer both comprise a catalyst-supported material, having at least one catalyst substance selected from among platinum and platinum-containing alloys and a support on which the catalyst substance is supported; and a polymer electrolyte. Either or both the anode catalyst layer and cathode catalyst layer have a catalyst-supporting ratio of 60 wt % or greater in the catalyst-supported material.07-01-2010
20100178585FILM-ELECTRODE ASSEMBLY, FILM-ELECTRODE-GAS DIFFUSION LAYER ASSEMBLY HAVING THE SAME, SOLID STATE POLYMER FUEL CELL, AND FILM-ELECTRODE ASSEMBLY MANUFACTURING METHOD - A membrane-electrode assembly 07-15-2010
20100183941ASSEMBLY OF MEMBRANE, ELECTRODE, GAS DIFFUSION LAYER AND GASKET, METHOD FOR PRODUCING THE SAME, AND SOLID POLYMER FUEL CELL - A method for producing a membrane-electrode-gas diffusion layer-gasket assembly 07-22-2010
20100190085MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCING THE SAME AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly (MEA) comprising an anode catalyst layer and cathode catalyst layer placed opposite each other, and a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer, as well as a fuel cell comprising the same. Either or both the anode catalyst layer and cathode catalyst layer comprise: a catalyst-supported material, having at least one catalyst substance selected from among platinum and platinum-containing alloys and a support on which the catalyst substance is supported; and a hydrocarbon-based polymer electrolyte. The catalyst-supporting ratio of the catalyst-supported material is 60 wt % or greater.07-29-2010

Hiroyuki Kurita, Saitama JP

Patent application numberDescriptionPublished
20100086446Exhaust Emission Purifying Apparatus for Engine - In an exhaust emission purifying apparatus for reductively purifying NOx in the exhaust emission by using a liquid reducing agent or its precursor, to be referred to as “liquid reducing agent” herein, a dosing flow rate of the liquid reducing agent according to engine operating conditions is computed, and the dosing of the liquid reducing agent is controlled based on the computed dosing flow rate, and also, it is judged whether or not a supply system of the liquid reducing agent is failed, based on a ratio between an integrated amount obtained by sequentially integrating the dosing flow rate and a consumed amount of the liquid reducing agent.04-08-2010
20100178215Exhaust Gas Purification Apparatus - An exhaust gas purification apparatus in which layout restriction is lessened to be able to further achieve space-saving is proposed. The exhaust gas purification apparatus includes a first cylindrical housing in which an oxidation catalytic converter and a PM collection filter are contained and a second cylindrical housing in which a reducing catalytic converter and an ammonia oxidation catalytic converter are contained. The exhaust gas purification apparatus further includes a communicating pipe that connects between far end portions of both the housings, and a nozzle that is disposed in the communicating pipe and injects liquid reducing agent in exhaust gas. The two housings are closely disposed such that axis lines thereof are arranged substantially parallel. The communicating pipe is disposed such that an axis line thereof is arranged substantially parallel with the axis lines of the housings. A flow passage of the exhaust gas from the first housing through the communicating pipe to the second housing is formed into a substantial N-shape.07-15-2010
20100178216Exhaust Gas Purification Apparatus - An exhaust gas purification apparatus in which layout restriction is lessened to be able to further achieve space-saving is proposed. The exhaust gas purification apparatus includes a first cylindrical housing in which an oxidation catalytic converter and a PM collection filter are contained and a second cylindrical housing in which a reducing catalytic converter and an ammonia oxidation catalytic converter are contained. The exhaust gas purification apparatus further includes a communicating pipe that connects between far end portions of both the housings, and a nozzle that is disposed in the communicating pipe and injects liquid reducing agent in exhaust gas. The two housings are closely disposed such that axis lines thereof are arranged substantially parallel. The communicating pipe is disposed such that an axis line thereof is arranged substantially parallel with the axis lines of the housings. A flow passage of the exhaust gas from the first housing to the second housing is folded by the communicating pipe.07-15-2010

Hiroyuki Kurita, Ibaraki JP

Patent application numberDescriptionPublished
20090202888Polymer electrolyte emulsion and use thereof - A polymer electrolyte emulsion wherein a polymer electrolyte particle is dispersed in a dispersing medium, wherein a polymer electrolyte contained in the polymer electrolyte particle is a block copolymer consisting of a segment having an acidic group and a segment without substantially ion exchange group, is provided.08-13-2009
20090208804Polymer electrolyte emulsion and use thereof - Provided is a polymer electrolyte emulsion, wherein a polymer electrolyte particle is dispersed in a dispersing medium, a zeta potential at the measurement temperature of 25° C. being in a range of −50 mV to −300 mV.08-20-2009
20090208810Process for producing polymer electrolyte emulsion - A process for producing a polymer electrolyte emulsion having the following steps (1) and (2) is provided. 08-20-2009
20100167165COPOLYMER, POLYMER ELECTROLYTE, AND USE THEREOF - The present invention is a copolymer obtained by condensation, a condensation reaction of a leaving group and a nucleophilic group, of a mixture of the following (A) and (C) with a mixture of (B) and (D), or of a mixture of (A), (B), (C) and (D): 07-01-2010

Hiroyuki Kurita, Tokyo JP

Patent application numberDescriptionPublished
20090315999FREQUENCY COMPONENT MEASURING DEVICE - A frequency component measuring device formed in a simple structure and enabling a reduction in measurement time and an increase in measurement accuracy. The frequency component measuring device comprises mixers 12-24-2009