Patents by Inventor Tatsuhiro Okada
Tatsuhiro Okada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8206814Abstract: The present invention provides a novel technology and a novel material having excellent pliability, gas barrier properties and water resistance, for the technical fields of packaging materials, sealing materials, electric insulating materials and the like, the present invention relates to a film of a material having a denatured clay as a main constituent thereof, wherein (1) the film comprises a denatured clay and an additive, (2) the weight ratio of the denatured clay is not less than 70% relative to total solids, (3) the film has gas barrier properties and water-vapor barrier properties, (4) the film has heat resistance, (5) the film has water resistance, (6) the film has sufficient mechanical strength to be used as a self-supporting film, and (7) the film can be formed on the surface of metals, plastics, rubber, paper and the like, and the present invention can provide a material comprising the denatured clay film in which denatured clay particles are highly oriented and which has excellent heat resistanceType: GrantFiled: February 11, 2008Date of Patent: June 26, 2012Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Takeo Ebina, Kiyoshi Kobayashi, Ryo Ishii, Tatsuhiro Okada, Fujio Mizukami
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Publication number: 20100129698Abstract: An electrode catalyst for fuel cell, containing a multinuclear complex, in which the multinuclear complex contains 2 to 4 transition metal atoms coordinated with a ligand having 5 to 15 coordination atoms in its molecule; and an electrode catalyst for fuel cell, comprising a mononuclear metal complex containing, as a ligand, an organic compound containing two or more phenol rings and three or more aromatic heterocycles.Type: ApplicationFiled: March 10, 2008Publication date: May 27, 2010Applicants: National Institute of Advanced Science and Technology, Sumitomo Chemical Company, LimitedInventors: Tatsuhiro Okada, Nobuyoshi Koshino, Tadafumi Matsunaga, Hideyuki Higashimura, Katsuhiro Suenobu, Masatoshi Iwata
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Publication number: 20090202806Abstract: The present invention provides a novel technology and a novel material having excellent pliability, gas barrier properties and water resistance, for the technical fields of packaging materials, sealing materials, electric insulating materials and the like, the present invention relates to a film of a material having a denatured clay as a main constituent thereof, wherein (1) the film comprises a denatured clay and an additive, (2) the weight ratio of the denatured clay is not less than 70% relative to total solids, (3) the film has gas barrier properties and water-vapor barrier properties, (4) the film has heat resistance, (5) the film has water resistance, (6) the film has sufficient mechanical strength to be used as a self-supporting film, and (7) the film can be formed on the surface of metals, plastics, rubber, paper and the like, and the present invention can provide a material comprising the denatured clay film in which denatured clay particles are highly oriented and which has excellent heat resistanceType: ApplicationFiled: February 11, 2008Publication date: August 13, 2009Inventors: Takeo EBINA, Kiyoshi Kobayashi, Ryo Ishii, Tatsuhiro Okada, Fujio Mizukami
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Patent number: 7169822Abstract: A polymeric actuator of simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement. The polymeric actuator includes an ion-exchange resin product and metal electrodes. The ion-exchange resin product contains an alkylammonium. The metal electrodes are formed on the surface of the ion-exchange resin product and are insulated from each other. The polymeric actuator operates as an actuator by applying a potential difference between the metal electrodes when the ion-exchange resin product is in water-containing state to allow the ion-exchange resin product to undergo bending or deformation.Type: GrantFiled: June 14, 2004Date of Patent: January 30, 2007Assignees: Eamex Corporation, National Institute of Advanced Science and TechnologyInventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
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Patent number: 6972160Abstract: A fuel cell, which has a tubular polymer electrolyte membrane, with a fuel electrode on one of inner and outer sides of the membrane, and with an air electrode on the other side of the membrane, wherein at least one of the fuel electrode and the air electrode is composed of carbon fibers on which a catalyst is loaded.Type: GrantFiled: December 4, 2002Date of Patent: December 6, 2005Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Tatsuhiro Okada, Kentaro Ishida, Masayoshi Ishida
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Publication number: 20040242709Abstract: A polymeric actuator of simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement. The polymeric actuator includes an ion-exchange resin product and metal electrodes. The ion-exchange resin product contains an alkylammonium. The metal electrodes are formed on the surface of the ion-exchange resin product and are insulated from each other. The polymeric actuator operates as an actuator by applying a potential difference between the metal electrodes when the ion-exchange resin product is in water-containing state to allow the ion-exchange resin product to undergo bending or deformation.Type: ApplicationFiled: June 14, 2004Publication date: December 2, 2004Inventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
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Patent number: 6762210Abstract: A process for producing a polymeric actuator including an ion-exchange resin product and metal electrodes which are formed on the surface of the ion-exchange resin product is provided. The process involves repeatedly conducting the following steps (i) to (iii) to form the metal electrodes ranging from the surface of the ion-exchange resin product to the inside thereof: (i) a step of allowing the ion-exchange resin product to adsorb a metal complex (adsorption step), (ii) a step of reducing the metal complex adsorbed on the ion-exchange resin product by a reducing agent to deposit a metal on the surface of the ion-exchange resin product (deposition step), and (iii) a step of washing the ion-exchange resin product having the deposited metal (washing step). Through the above steps, a polymeric actuator having simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement can be obtained.Type: GrantFiled: February 19, 1999Date of Patent: July 13, 2004Assignees: Eamex Corporation, National Institute of Advanced Science and TechnologyInventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
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Publication number: 20030190514Abstract: A fuel cell, which has a tubular polymer electrolyte membrane, with a fuel electrode on one of inner and outer sides of the membrane, and with an air electrode on the other side of the membrane, wherein at least one of the fuel electrode and the air electrode is composed of carbon fibers on which a catalyst is loaded.Type: ApplicationFiled: December 4, 2002Publication date: October 9, 2003Inventors: Tatsuhiro Okada, Kentaro Ishida, Masayoshi Ishida
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Publication number: 20020122968Abstract: A fuel cell, which has a tubular polymer electrolyte membrane, with a fuel electrode on one of inner and outer sides of the membrane, and with an air electrode on the other side of the membrane.Type: ApplicationFiled: March 1, 2002Publication date: September 5, 2002Inventors: Tatsuhiro Okada, Shin-Ya Ishimaru, Keisuke Oguro, Masayoshi Ishida, Masaru Yoshitake
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Patent number: 4861455Abstract: The electrode membrane of the invention has high ion-selectivity for lithium ions relative to other alkali and alkaline earth metal ions. The membrane is shaped from a polymeric composition comprising a polymeric material, e.g., a polyvinyl chloride resin and poly(1,2-butadiene), a plasticizer and, as the ion carrier, a derivative of 1,10-phenanthroline such as 2,9-dimethyl-1,10-phenanthroline and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline.Type: GrantFiled: March 28, 1988Date of Patent: August 29, 1989Assignee: Japan as represented by Director General of Agency of Industrial Science and TechnologyInventors: Hideki Sugihara, Kazuhisa Hiratani, Tatsuhiro Okada