Patents by Inventor Shigeaki Murata
Shigeaki Murata 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: 9789755Abstract: A compressor, an intercooler, and a fuel cell stack are housed in a housing compartment. The compressor and the intercooler are connected with each other by upstream side piping, and the intercooler and the fuel cell stack are connected with each other by downstream side piping. The upstream side piping is formed from upstream side first and second pipe parts, and the downstream side piping is formed from downstream side first and second pipe parts. Movement of the compressor and fuel cell stack relative to the intercooler at the time of a heavy collision of the vehicle causes disconnection of the upstream side first and second pipe parts and disconnection of the downstream side first and second pipe parts, to thereby cause communication of the upstream side piping and the downstream side piping with an internal space of the housing compartment.Type: GrantFiled: March 10, 2015Date of Patent: October 17, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuji Aishima, Shigeaki Murata, Hiroyoshi Matsumoto
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Patent number: 9692058Abstract: This electrode for fuel cell comprises: carbon nanotubes; a catalyst for fuel cell supported on the carbon nanotubes; and an ionomer provided to coat the carbon nanotubes and the catalyst for fuel cell, wherein when a length of the carbon nanotubes is represented by La [?m] and an inter-core pitch of the carbon nanotubes is represented by Pa [nm], the length La and the inter-core pitch Pa satisfy two expressions given below: 30?La?240; and 0.351×La+75?Pa?250.Type: GrantFiled: August 2, 2012Date of Patent: June 27, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigeki Hasegawa, Shigeaki Murata, Masahiro Imanishi, Ryoichi Namba
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Publication number: 20170096067Abstract: In order to limit entry of a fuel cell stack into a passenger compartment by a simple structure, the fuel cell stack is accommodated in an accommodating compartment formed at a rear of a passenger compartment. A force receiving member is arranged forward with respect to the fuel cell stack and below the fuel cell stack so that rearward force acts on the force receiving member at the time of vehicle collision. When the rearward force acting on the force receiving member due to vehicle collision is larger than a predetermined upper limit value, the rearward force is converted into upward force, and the upward force is transmitted to a forward bottom surface of the fuel cell stack, whereby a forward end part of the fuel cell stack is lifted up with respect to a rearward end part of the fuel cell stack upon vehicle collision.Type: ApplicationFiled: January 26, 2015Publication date: April 6, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shigeaki MURATA
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Publication number: 20170066479Abstract: A fuel cell vehicle comprises a front room; a vehicle interior; a fuel cell in the front room; a center tunnel; a tank that is at least partly placed in the center tunnel and stores a gas to be supplied to the fuel cell; and a dashboard that separates the front room from the vehicle interior, wherein the fuel cell is placed above the tank such that a profile of the fuel cell does not overlap with a center axis of the tank, the dashboard has an overlapping portion arranged to overlap with a rear portion of the fuel cell and that is located behind a front end of the tank, at least part of a remaining portion of the dashboard other than the overlapping portion is placed flush with the front end of the tank in a vehicle longitudinal direction or is placed in front of the front end of the tank, and in a normal state, a receiving space is provided between a rear end of the fuel cell and the overlapping portion and is configured to allow at least part of the rear portion of the fuel cell to be moved to behind the frType: ApplicationFiled: August 24, 2016Publication date: March 9, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shigeaki MURATA
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Publication number: 20170043655Abstract: A compressor, an intercooler, and a fuel cell stack are housed in a housing compartment. The compressor and the intercooler are connected with each other by upstream side piping, and the intercooler and the fuel cell stack are connected with each other by downstream side piping. The upstream side piping is formed from upstream side first and second pipe parts, and the downstream side piping is formed from downstream side first and second pipe parts. Movement of the compressor and fuel cell stack relative to the intercooler at the time of a heavy collision of the vehicle causes disconnection of the upstream side first and second pipe parts and disconnection of the downstream side first and second pipe parts, to thereby cause communication of the upstream side piping and the downstream side piping with an internal space of the housing compartment.Type: ApplicationFiled: March 10, 2015Publication date: February 16, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuji AISHIMA, Shigeaki MURATA, Hiroyoshi MATSUMOTO
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Publication number: 20160297290Abstract: A holding mechanism includes: a holding plate capable of holding an electronic device for an electric vehicle; a leg portion supporting two long sides of the holding plate; first and second fixing portions provided in the leg portion and separated from each other in a short direction of the holding plate; and a third fixing portion located at or near one of two sides of the holding plate along the short direction and located higher than the first and second fixing portions, wherein the first and second fixing portions can be respectively fixed to first and second mount parts provided in a vehicle body structural member at a front side of the electric vehicle and separated from each other in a width direction or front-rear direction of the electric vehicle, and the third fixing portion can be fixed to a third mount part provided in the vehicle body structural member.Type: ApplicationFiled: April 4, 2016Publication date: October 13, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigeaki MURATA, Yasuji NISHI
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Publication number: 20150180047Abstract: This electrode for fuel cell comprises: carbon nanotubes; a catalyst for fuel cell supported on the carbon nanotubes; and an ionomer provided to coat the carbon nanotubes and the catalyst for fuel cell, wherein when a length of the carbon nanotubes is represented by La [?m] and an inter-core pitch of the carbon nanotubes is represented by Pa [nm], the length La and the inter-core pitch Pa satisfy two expressions given below: 30?La?240; and 0.351×La+75?Pa?250.Type: ApplicationFiled: August 2, 2012Publication date: June 25, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigeki Hasegawa, Shigeaki Murata, Masahiro Imanishi, Ryoichi Namba
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Patent number: 8980038Abstract: An object of the present invention is to provide a method for producing a membrane electrode assembly with excellent electrode transfer ability to electrolyte membrane. Disclosed is a method for producing a membrane electrode assembly, the assembly comprising an electrolyte membrane and an electrode which are attached to each other, the method comprising: a hot pressing step in which an electrolyte membrane and an electrode, the electrode comprising an electroconductive material and an electrolyte resin and being formed on a flexible substrate, are hot pressed to produce a laminate in which the electrolyte membrane, the electrode and the flexible substrate are laminated in this order, and a bending step in which the laminate is bent so that the flexible substrate side becomes concave, thereby removing the flexible substrate from the electrode.Type: GrantFiled: November 1, 2012Date of Patent: March 17, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keita Yamaue, Shigeaki Murata, Masahiro Imanishi, Shigeki Hasegawa, Ryoichi Nanba, Kyohei Kadota
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Publication number: 20140318696Abstract: An object of the present invention is to provide a method for producing a membrane electrode assembly with excellent electrode transfer ability to electrolyte membrane. Disclosed is a method for producing a membrane electrode assembly, the assembly comprising an electrolyte membrane and an electrode which are attached to each other, the method comprising: a hot pressing step in which an electrolyte membrane and an electrode, the electrode comprising an electroconductive material and an electrolyte resin and being formed on a flexible substrate, are hot pressed to produce a laminate in which the electrolyte membrane, the electrode and the flexible substrate are laminated in this order, and a bending step in which the laminate is bent so that the flexible substrate side becomes concave, thereby removing the flexible substrate from the electrode.Type: ApplicationFiled: November 1, 2012Publication date: October 30, 2014Inventors: Keita Yamaue, Shigeaki Murata, Masahiro Imanishi, Shigeki Hasegawa, Ryoichi Nanba, Kyohei Kadota
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Patent number: 8784562Abstract: A substrate 10 that selectively allows hydrogen to permeate therethrough is formed with a catalyst thin layer 20 on a first side 11 thereof and is heated in a furnace tube 110, which functions as a reactor, of a heating furnace 100 while a raw material gas to the catalyst thin layer 20 is fed. Hydrogen produced on the first side 11 of the substrate 10 as a result of the formation of carbon nanotubes 5 is separated from the raw material gas and is allowed to permeate to a second side 12 thereof.Type: GrantFiled: April 8, 2010Date of Patent: July 22, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahiro Imanishi, Naoki Ito, Shigeaki Murata, Keisuke Nagasaka, Hiroyuki Kawai, Satoshi Nakazawa
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Patent number: 8658228Abstract: A tubular fuel cell module comprising a tubular fuel cell capable of improving current collection efficiency, and a fuel cell comprising the fuel cell module are provided. A fuel cell module (100) includes a plurality of tubular fuel cells (10A, 10A, . . . ) arranged in parallel and a first current collector (35), wherein the tubular fuel cells (10A, 10A, . . . ) are woven by the first current collector (35) in a direction crossing an axial direction of the tubular fuel cells (10A, 10A, . . . ) in a plan view.Type: GrantFiled: February 3, 2006Date of Patent: February 25, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Haruyuki Nakanishi, Shigeaki Murata, Masahiro Imanishi, Yoshihisa Tamura
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Patent number: 8455148Abstract: The present invention provides a fuel cell which is capable to improve heat exchange efficiency with a plurality of tubular cells. The fuel cell of the present invention comprises: a plurality of tubular cells; heat exchangers arranged at the outside of the tubular cells, wherein at least a part of the outer circumferential surface of said tubular cells and the peripheral surface of said heat exchangers have face contact with each other.Type: GrantFiled: August 31, 2006Date of Patent: June 4, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Haruyuki Nakanishi, Shigeaki Murata, Masahiro Imanishi, Yoshihisa Tamura
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Patent number: 8338056Abstract: A tubular fuel cell includes an inner current collector, a membrane-electrode assembly, and seal portions provided at the axial end portions of the membrane-electrode assembly, respectively. The membrane-electrode assembly includes an inner catalyst layer provided on the inner current collector, an electrolyte membrane provided on the inner catalyst layer, and an outer catalyst layer provided on the electrolyte membrane. The axial length of the outer catalyst layer is shorter than the axial lengths of the electrolyte membrane and the outer catalyst layer. The axial end face of the outer catalyst layer and the axial end face of the inner catalyst layer are located on the opposite sides of the seal portion in each side of the tubular fuel cell.Type: GrantFiled: November 9, 2006Date of Patent: December 25, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahiro Imanishi, Haruyuki Nakanishi, Shigeaki Murata, Hirokazu Ishimaru, Yuichiro Hama, Yoshihisa Tamura
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Patent number: 8283084Abstract: There is provided a hollow-shaped membrane electrode assembly for a fuel cell capable of improving power density per unit volume, wherein the hollow-shaped membrane electrode assembly for a fuel cell comprises a hollow solid electrolyte membrane, an outer electrode layer formed on the outer circumferential surface of the solid electrolyte membrane and an inner electrode layer formed on the inner circumferential surface of the solid electrolyte membrane, and wherein the hollow-shaped membrane electrode assembly for a fuel cell is formed in the shape of a spiral.Type: GrantFiled: February 3, 2006Date of Patent: October 9, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shigeaki Murata, Haruyuki Nakanishi, Masahiro Imanishi, Yoshihisa Tamura
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Publication number: 20120045572Abstract: A substrate 10 that selectively allows hydrogen to permeate therethrough is formed with a catalyst thin layer 20 on a first side 11 thereof and is heated in a furnace tube 110, which functions as a reactor, of a heating furnace 100 while a raw material gas to the catalyst thin layer 20 is fed. Hydrogen produced on the first side 11 of the substrate 10 as a result of the formation of carbon nanotubes 5 is separated from the raw material gas and is allowed to permeate to a second side 12 thereof.Type: ApplicationFiled: April 8, 2010Publication date: February 23, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masahiro Imanishi, Naoki Ito, Shigeaki Murata, Keisuke Nagasaka, Hiroyuki Kawai, Satoshi Nakazawa
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Patent number: 8007691Abstract: A catalyst for electrodes in solid-polymer fuel cells which comprises metal oxide particles themselves. The catalyst contains fine transition-metal oxide particles having, in the main phase, a perovskite structure represented by the general formula ABO3 (wherein A represents one or more elements selected among lanthanum, strontium, cerium, calcium, yttrium, erbium, praseodymium, neodymium, samarium, europium, silicon, magnesium, barium, niobium, lead, bismuth, and antimony; and B represents one or more elements selected among iron, cobalt, manganese, copper, titanium, chromium, nickel, and molybdenum), the fine oxide particles having lattice constants satisfying the following relationship (1): 1.402<2b/(a+c)<1.422??(1) wherein a and c represent the minor-axis lengths of the perovskite type crystal lattice and b represents the major-axis length thereof.Type: GrantFiled: June 12, 2007Date of Patent: August 30, 2011Assignees: Hitachi Maxell Energy, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Yuko Sawaki, Mikio Kishimoto, Haruyuki Nakanishi, Shigeaki Murata, Masahiro Imanishi, Shinichi Matsumoto
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Patent number: 7977009Abstract: A cell module for a fuel cell according to embodiments of the invention includes a hollow-core electrolyte membrane; two electrodes one of which is arranged on the inner face of the hollow-core electrolyte membrane and the other of which is arranged on the outer face of the hollow-core electrolyte membrane; and first collecting members that are connected to the respective two electrodes. At least one of the two electrodes includes nano-columnar bodies on which electrode catalysts are supported. The nano-columnar bodies are formed on at least one of the first collecting members corresponding to the at least one of the electrodes that includes the nano-columnar bodies. At least part of the nano-columnar bodies are oriented toward the hollow-core electrolyte membrane.Type: GrantFiled: December 15, 2006Date of Patent: July 12, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Tsuchiya Co., Ltd.Inventors: Haruyuki Nakanishi, Shigeaki Murata, Masahito Hoshino, Hiroaki Hayashi, Kiyomi Kozuka
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Patent number: 7838064Abstract: A method for manufacturing a tube-type fuel cell by which a tube-type fuel cell with good adhesion can be produced without blocking a gas flow channel in its inner current collector. The method for manufacturing a tube-type fuel cell may include a filling step of providing a columnar-shaped inner current collector having a gas flow channel on its outer peripheral face and filling the gas flow channel with a removable substance to form a removable portion. Also a functional layer forming step of forming a functional layer on at least the removable portion and a removing step of removing the removable portion after the functional layer forming step may be used.Type: GrantFiled: August 30, 2006Date of Patent: November 23, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Haruyuki Nakanishi, Shigeaki Murata, Masahiro Imanishi, Yoshihisa Tamura
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Publication number: 20100227255Abstract: A cell module for a fuel cell according to embodiments of the invention includes a hollow-core electrolyte membrane; and two electrodes one of which is arranged on the inner face of the hollow-core electrolyte membrane and the other of which is arranged on the outer face of the hollow-core electrolyte membrane. At least one of the two electrodes includes nano-columnar bodies, which are oriented toward the hollow-core electrolyte membrane, and on which electrode catalysts are supported.Type: ApplicationFiled: December 15, 2006Publication date: September 9, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Haruyuki Nakanishi, Shigeaki Murata, Nobuhira Abe
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Patent number: 7754366Abstract: A tubular fuel cell module is provided with a tubular cell of a tubular fuel cell, and a heat transfer pipe through which a heating/cooling medium flows to selectively heat and cool the tubular fuel cell. The heat transfer pipe includes a first straight portion, a second straight portion, and a bent portion that connects the first straight portion with the second straight portion. At least a portion of the tubular cell is arranged on at least one of the first straight portion and the second straight portion. As a result, the reliability of a seal of the tubular fuel cell module is improved.Type: GrantFiled: November 9, 2006Date of Patent: July 13, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Haruyuki Nakanishi, Shigeaki Murata, Masahiro Imanishi, Yoshihisa Tamura