Patents by Inventor Chikashi Inazumi
Chikashi Inazumi 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: 9341111Abstract: An ammonia-engine system is capable of supplying an ammonia cracking catalyst with a temperature necessary to promote a reaction even during low load operation in which a temperature of an exhaust gas from an ammonia engine is lower than an operating temperature of the ammonia cracking catalyst. In an ammonia-engine system provided with an ammonia engine (2) using ammonia as fuel and an ammonia cracking device (5) including an ammonia cracking catalyst that cracks ammonia and cracking ammonia to produce hydrogen, an ammonia oxidizing device (4) is provided between the ammonia engine (2) and the ammonia cracking device (5).Type: GrantFiled: November 19, 2009Date of Patent: May 17, 2016Assignees: HITACHI ZOSEN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Hikazudani, Chikashi Inazumi, Haruyuki Nakanishi, Norihiko Nakamura, Hidekazu Arikawa
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Patent number: 8932773Abstract: A hydrogen generating apparatus for effectively generating hydrogen from ammonia and relates to the hydrogen generating apparatus for generating hydrogen from ammonia. The apparatus comprises an ammonia oxidation part having ammonia oxidation catalysts which oxidizes ammonia, and an ammonia decomposition part having an ammonia decomposition catalyst which decomposes ammonia to generate nitrogen and hydrogen. The decomposition part is located downstream of the oxidation part in a direction of feed gas flow.Type: GrantFiled: March 11, 2010Date of Patent: January 13, 2015Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Zosen CorporationInventors: Haruyuki Nakanishi, Hidekazu Arikawa, Susumu Hikazudani, Chikashi Inazumi, Sadao Araki, Takuma Mori
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Patent number: 8623313Abstract: The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.Type: GrantFiled: December 22, 2009Date of Patent: January 7, 2014Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Zosen CorporationInventors: Norihiko Nakamura, Haruyuki Nakanishi, Hidekazu Arikawa, Susumu Hikazudani, Chikashi Inazumi
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Patent number: 8597583Abstract: An ammonia synthesis apparatus includes: a first gas channel; a second gas channel disposed outside the first gas channel; a third gas channel disposed outside the second gas channel; an air supply unit that supplies air to the second or third gas channel; a water supply unit that supplies water to the first gas channel; and a heat supply unit that supplies heat to the first gas channel. A metal or a metal oxide that reduces water to produce hydrogen is placed in the first gas channel. An ammonia synthesis catalyst is placed in the second gas channel located downstream of the downstream end portion of the first gas channel. The second and third gas channels are at least partially partitioned by an oxygen permeation membrane, or a nitrogen permeation membrane, so that oxygen is supplied to the third gas channel, and nitrogen is supplied to the second gas channel.Type: GrantFiled: February 12, 2010Date of Patent: December 3, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Zosen CorporationInventors: Haruyuki Nakanishi, Norihiko Nakamura, Hidekazu Arikawa, Susumu Hikazudani, Sadao Araki, Chikashi Inazumi
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Patent number: 8585996Abstract: The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.Type: GrantFiled: December 22, 2009Date of Patent: November 19, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Zosen CorporationInventors: Norihiko Nakamura, Haruyuki Nakanishi, Hidekazu Arikawa, Susumu Hikazudani, Chikashi Inazumi
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Fuel cell with electrode having an electrically conductive nano-column and production method thereof
Patent number: 8486583Abstract: In a fuel cell including an electrolyte membrane and a pair of electrodes disposed on both sides of the electrolyte membrane, at least one of the electrodes has an electrically conductive nanocolumn that is oriented with an inclination of 60° or less with respect to a planar direction of the electrolyte membrane, a catalyst supported on the electrically conductive nanocolumn, and an electrolyte resin coating the electrically conductive nanocolumn.Type: GrantFiled: March 15, 2007Date of Patent: July 16, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Hitachi Zosen CorporationInventors: Haruyuki Nakanishi, Chikashi Inazumi, Yuki Sairyo, Momoyo Sawai, Kenji Yoshikawa, Tomoya Yamashita -
Publication number: 20120040261Abstract: A hydrogen generating apparatus for effectively generating hydrogen from ammonia and relates to the hydrogen generating apparatus for generating hydrogen from ammonia. The apparatus comprises an ammonia oxidation part having ammonia oxidation catalysts which oxidizes ammonia, and an ammonia decomposition part having an ammonia decomposition catalyst which decomposes ammonia to generate nitrogen and hydrogen. The decomposition part is located downstream of the oxidation part in a direction of feed gas flow.Type: ApplicationFiled: March 11, 2010Publication date: February 16, 2012Applicants: HITACHI ZOSEN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Haruyuki Nakanishi, Hidekazu Arikawa, Susumu Hikazudani, Chikashi Inazumi, Sadao Araki, Takuma Mori
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Publication number: 20110306489Abstract: Disclosed is an ammonia decomposition catalyst which is obtained by heat-treating a complex at a temperature of 360° C. to 900° C. in a reducing atmosphere, wherein the complex containing a polymer having a molecular weight of 1,000 to 500,000 represented by the formula [I], a transition metal coordinated with the polymer, and an activated carbon or a carbon nanotube added thereto. In a case of using the carbon nanotube, an alkali metal compound or an alkaline earth metal compound is added to the heat-treated complex. R1 represents H or hydrocarbon having 1 to 10 carbon atoms, R2 and R3 each represent H, halogen, nitro, acyl, ester, carboxyl, formyl, nitrile, sulfone, aryl, or alkyl group having 1 to 15 carbon atoms, X and Y each represent H or OH, Z represents CH or N, R4 and R5 each represent H, OH, ether, amino, aryl, or alkyl group having 1 to 15 carbon atoms, x represents a real number of 1 to 2, y represents a real number of 1 to 3, and n represents a real number of 2 to 120.Type: ApplicationFiled: February 18, 2010Publication date: December 15, 2011Applicants: HITACHI ZOSEN CORPORATION, IHARA CHEMICAL INDUSTRY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Hikazudani, Takuma Mori, Chikashi Inazumi, Haruyuki Nakanishi, Hidekazu Arikawa, Hironobu Kumagai
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Publication number: 20110283960Abstract: An ammonia-engine system is capable of supplying an ammonia cracking catalyst with a temperature necessary to promote a reaction even during low load operation in which a temperature of an exhaust gas from an ammonia engine is lower than an operating temperature of the ammonia cracking catalyst. In an ammonia-engine system provided with an ammonia engine (2) using ammonia as fuel and an ammonia cracking device (5) including an ammonia cracking catalyst that cracks ammonia and cracking ammonia to produce hydrogen, an ammonia oxidizing device (4) is provided between the ammonia engine (2) and the ammonia cracking device (5).Type: ApplicationFiled: November 19, 2009Publication date: November 24, 2011Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HITACHI ZOSEN CORPORATIONInventors: Susumu Hikazudani, Chikashi Inazumi, Haruyuki Nakanishi, Norihiko Nakamura, Hidekazu Arikawa
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Publication number: 20110286907Abstract: The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.Type: ApplicationFiled: December 22, 2009Publication date: November 24, 2011Applicants: HITACHI ZOSEN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Norihiko Nakamura, Haruyuki Nakanishi, Hidekazu Arikawa, Susumu Hikazudani, Chikashi Inazumi
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Publication number: 20100260655Abstract: An ammonia synthesis apparatus includes: a first gas channel; a second gas channel disposed outside the first gas channel; a third gas channel disposed outside the second gas channel; an air supply unit that supplies air to the second or third gas channel; a water supply unit that supplies water to the first gas channel; and a heat supply unit that supplies heat to the first gas channel. A metal or a metal oxide that reduces water to produce hydrogen is placed in the first gas channel. An ammonia synthesis catalyst is placed in the second gas channel located downstream of the downstream end portion of the first gas channel. The second and third gas channels are at least partially partitioned by an oxygen permeation membrane, or a nitrogen permeation membrane, so that oxygen is supplied to the third gas channel, and nitrogen is supplied to the second gas channel.Type: ApplicationFiled: February 12, 2010Publication date: October 14, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HITACHI ZOSEN CORPORATIONInventors: Haruyuki NAKANISHI, Norihiko NAKAMURA, Hidekazu ARIKAWA, Susumu HIKAZUDANI, Sadao ARAKI, Chikashi INAZUMI
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FUEL CELL WITH ELECTRODE HAVING AN ELECTRICALLY CONDUCTIVE NANO-COLUMN AND PRODUCTION METHOD THEREOF
Publication number: 20100075201Abstract: In a fuel cell including an electrolyte membrane and a pair of electrodes disposed on both sides of the electrolyte membrane, at least one of the electrodes has an electrically conductive nanocolumn that is oriented with an inclination of 60° or less with respect to a planar direction of the electrolyte membrane, a catalyst supported on the electrically conductive nanocolumn, and an electrolyte resin coating the electrically conductive nanocolumn.Type: ApplicationFiled: March 15, 2007Publication date: March 25, 2010Inventors: Haruyuki Nakanishi, Chikashi Inazumi, Yuki Sairyo, Momoyo Sawai, Kenji Yoshikawa, Tomoya Yamashita -
Publication number: 20050081983Abstract: An object of the invention is to provide a carbon nanotube electrode which is suited to quantity production and advantageous in cost, and a process for producing the same. When carbon nanotubes on respective catalyst particles 12 on an endless belt 3 gradually fall down to a horizontal position while moving around a driven drum 2 after traveling from a CVD zone to a transfer zone with the movement of the belt, the carbon nanotubes 11 have their outer ends pressed against a conductive film 8. The conductive film 8 is sent out from a film feeder 9 downward and heated by a heater 10 to a temperature not lower than the softening temperature of the film to below the melting temperature thereof. The carbon nanotubes 11 are transferred from the catalyst particles 12 to the conductive film 8 substantially perpendicular to the film surface by being pressed against the conductive film 8 in this way.Type: ApplicationFiled: July 15, 2002Publication date: April 21, 2005Inventors: Yoshikazu Nakayama, Chikashi Inazumi, Hideki Shiozaki, Daisuke Fujita
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Patent number: 5612276Abstract: The invention provides first to fourth adsorbents for removing low-concention nitrogen oxides. The first adsorbent comprises a carrier of gamma-alumina, and ruthenium supported-thereon. The second adsorbent comprises a carrier of anatase-type titania, and ruthenium supported thereon. The third adsorbent comprises ceramic paper retaining a carrier of anatase-type titania thereon, and ruthenium supported on the ceramic paper. The fourth adsorbent comprises ceramic paper retaining a carrier of anatase-type titania thereon, and a ruthenium halide and a halide of addition metal which are co-supported on the ceramic paper. These adsorbents are free of the influence of moisture and therefore usable without necessitating energy-consuming dehumidification or only with dehumidification on a reduced scale.Type: GrantFiled: April 27, 1995Date of Patent: March 18, 1997Assignees: Hitachi Zosen Corporation, The Pollution Related Health Damage Compensation & Prevention AssociationInventors: Shigenori Onitsuka, Masayoshi Ichiki, Chikashi Inazumi, Takanobu Watanabe, Atsushi Fukuju, Masaki Akiyama, Yuki Sairyo, Hidetsugu Kobayashi
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Patent number: 5439868Abstract: The invention provides first to fourth adsorbents for removing low-concentration nitrogen oxides. The first adsorbent comprises a carrier of gamma-alumina, and ruthenium supported thereon. The second adsorbent comprises a carrier of anatase-type titania, and ruthenium supported thereon. The third adsorbent comprises ceramic paper retaining a carrier of anatase-type titania thereon, and ruthenium supported on the ceramic paper. The fourth adsorbent comprises ceramic paper retaining a carrier of anatase-type titania thereon, and a ruthenium halide and a halide of addition metal which are co-supported on the ceramic paper. These adsorbents are free of the influence of moisture and therefore usable without necessitating energy-consuming dehumidification or only with dehumidification on a reduced scale.Type: GrantFiled: August 11, 1994Date of Patent: August 8, 1995Assignees: Hitachi Zosen Corporation, The Pollution-Related Health Damage Compensation and Prevention AssociationInventors: Shigenori Onitsuka, Masayoshi Ichiki, Chikashi Inazumi, Takanobu Watanabe, Atsushi Fukuju, Masaki Akiyama, Yuki Sairyo, Hidetsugu Kobayashi
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Patent number: 4179412Abstract: A catalyst for decomposing ammonia by oxidation is produced by converting the surface layer of steel material of specified shape resembling a ring, honeycomb, plate or the like to an aluminum alloy, treating the steel material with an aluminum dissolving solution to dissolve out the aluminum and to render the surface layer porous, subjecting the steel material to oxidation treatment to obtain a catalyst carrier, and causing the carrier to support platinum.Type: GrantFiled: January 30, 1978Date of Patent: December 18, 1979Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.Inventors: Hideya Inaba, Yasumi Kamino, Shigenori Onizuka, Chikashi Inazumi
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Patent number: 4170574Abstract: An oxidizing metal catalyst incorporating platinum is produced by converting the surface layer of steel material of specified shape resembling a ring, honeycomb, plate or the like to an aluminum alloy, treating the steel material with an aluminum dissolving solution to dissolve out the aluminum and to render the surface layer porous, subjecting the steel material to oxidation treatment to obtain a catalyst carrier, immersing the carrier in a solution of chloroplatinic acid adjusted to weak alkalinity with sodium hydroxide, and drying the carrier after withdrawing the carrier from the solution.Type: GrantFiled: January 30, 1978Date of Patent: October 9, 1979Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.Inventors: Hideya Inaba, Yasumi Kamino, Shigenori Onizuka, Chikashi Inazumi
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Patent number: 4169814Abstract: A catalyst for decomposing ammonia by oxidation is produced by converting the surface layer of steel material of specified shape resembling a ring, honeycomb, plate or the like to an aluminum alloy, treating the steel material with an aluminum dissolving solution to dissolve out the aluminum and to render the surface layer porous, subjecting the steel material to oxidation treatment to obtain a catalyst carrier, immersing the carrier in a solution of chloroplatinic acid adjusted to weak alkalinity with barium hydroxide, and drying the carrier after withdrawing the carrier from the solution.Type: GrantFiled: February 3, 1978Date of Patent: October 2, 1979Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.Inventors: Hideya Inaba, Yasumi Kamino, Shigenori Onizuka, Chikashi Inazumi