Patents by Inventor Kentaro Ishida
Kentaro Ishida 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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Publication number: 20120295177Abstract: A cell unit of a fuel cell includes a first membrane electrode assembly, a first metal separator, a second membrane electrode assembly, and a second metal separator. Resin frame members are provided at the outer ends of the first and second membrane electrode assemblies. Coolant connection channels including a plurality of grooves is formed in each of the resin frame members. The grooves of the coolant connection channels of the cell unit and grooves of coolant connection channels of a cell unit that is adjacent to the cell unit in the stacking direction are offset from each other, and are not overlapped with each other in the stacking direction.Type: ApplicationFiled: May 16, 2012Publication date: November 22, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Kentaro ISHIDA, Shuhei GOTO, Narutoshi SUGITA, Tetsuya NAKAMURA
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Publication number: 20120270131Abstract: A fuel cell unit of a fuel cell contains a first membrane electrode assembly having a frame portion on an outer circumference thereof, a first separator, a second membrane electrode assembly having a frame portion on an outer circumference thereof, a second separator, and a third separator. A plurality of resin pins are formed integrally on the frame portion of the first membrane electrode assembly. The resin pins are integrally inserted into holes in the first separator, holes in the second membrane electrode assembly, holes in the second separator, and holes in the third separator.Type: ApplicationFiled: April 18, 2012Publication date: October 25, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Masahiro FUKUTA, Yoshihiro NAKANISHI, Kentaro ISHIDA
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Publication number: 20120258378Abstract: A cell unit of a fuel cell includes a first membrane electrode assembly, a first metal separator, a second membrane electrode assembly, and a second metal separator. A resin frame member is provided integrally with an outer circumference of the first membrane electrode assembly. An oxygen-containing gas supply passage, a fuel gas supply passage, a coolant supply passage, an oxygen-containing gas discharge passage, a fuel gas discharge passage, and a coolant discharge passage extend through the resin frame member in a stacking direction. At each of both ends of the resin frame member in a longitudinal direction, a pair of projections are provided. The projections protrude toward both sides in a lateral direction.Type: ApplicationFiled: April 3, 2012Publication date: October 11, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Narutoshi SUGITA, Shuhei GOTO, Kentaro ISHIDA, Tetsuya NAKAMURA
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Publication number: 20120258377Abstract: A cell unit of a fuel cell includes a first membrane electrode assembly, a first metal separator, a second membrane electrode assembly, and a second metal separator. Frames are provided at outer circumferences of the first and second membrane electrode assemblies. An oxygen-containing gas supply passage and a fuel gas supply passage, and an oxygen-containing gas discharge passage and a fuel gas discharge passage are provided in one pair of opposite sides of the frames, and a pair of coolant supply passages and a pair of coolant discharge passages are provided in the other pair of opposite sides of the frames at distances from one another.Type: ApplicationFiled: March 28, 2012Publication date: October 11, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Narutoshi SUGITA, Shuhei GOTO, Kentaro ISHIDA, Tetsuya NAKAMURA
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Patent number: 8268503Abstract: In a fuel cell module, a first membrane electrode assembly is sandwiched between a first metal separator and a second metal separator, and a second membrane electrode assembly is sandwiched between the second metal separator and the third metal separator. An oxygen-containing gas distribution section connected to a first oxygen-containing gas flow field is formed between the first metal separator and the second metal separator. The second metal separator has holes connecting the oxygen-containing gas distribution section to a second oxygen-containing gas flow field.Type: GrantFiled: April 26, 2007Date of Patent: September 18, 2012Assignee: Honda Motor Co., Ltd.Inventors: Kentaro Ishida, Seiji Sugiura
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Publication number: 20120178004Abstract: A fuel cell includes a membrane-electrode assembly and a separator. The membrane-electrode assembly has an electrolyte and a pair of electrodes that are disposed on respective sides of the electrolyte. The membrane-electrode assembly and the separator are stacked in a stacking direction. A reaction surface of the membrane-electrode assembly is in a vertical direction along a direction of gravity and has a shape having a longer dimension in a horizontal direction. The fuel cell is provided with a reactant gas passage to allow a reactant gas to flow along a longitudinal direction of the reaction surface. The reactant gas is an oxidant gas or a fuel gas. A drain channel to allow product water from the reactant gas passage to be drained away is disposed between the membrane-electrode assembly and the separator and under the reaction surface in the direction of gravity.Type: ApplicationFiled: January 10, 2012Publication date: July 12, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Kentaro Ishida, Akihiro Matsui, Narutoshi Sugita, Hayato Kaji
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Publication number: 20110183227Abstract: A fuel cell stack includes a plurality of unit cells stacked in a stacking direction substantially along a direction of gravity. Each of the plurality of unit cells includes a first metal separator, a second metal separator, and a membrane electrode assembly sandwiched between the first metal separator and the second metal. A reactant gas channel allows a reactant gas to flow along a surface of each of the first and second metal separators. A reactant gas inlet manifold and a reactant gas outlet manifold allow the reactant gas to flow the reactant gas inlet manifold and the reactant gas outlet manifold in the stacking direction. A bridge portion forms a connection channel to connect at least the reactant gas outlet manifold to the reactant gas channel. The bridge portion includes a guide portion to break a continuity of condensed water.Type: ApplicationFiled: January 17, 2011Publication date: July 28, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Hiroyuki TANAKA, Narutoshi SUGITA, Kentaro ISHIDA, Keisuke ANDO
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Publication number: 20110136038Abstract: An electrolyte membrane/electrode structure constituting a fuel cell comprises a solid polymer electrolyte membrane, an anode side electrode and a cathode side electrode sandwiching the solid polymer electrolyte membrane. The anode side electrode is provided with an electrode catalyst layer and a gas diffusion layer abutting on one side of the solid polymer electrolyte membrane and exposing the outer circumference thereof in the shape of a frame, and the cathode side electrode is provided with an electrode catalyst layer and a gas diffusion layer abutting on the other side of the solid polymer electrolyte membrane. A reinforcing sheet member is arranged on the frame-shaped surface of the solid polymer electrolyte membrane projecting from the outer circumference of the gas diffusion layer.Type: ApplicationFiled: July 22, 2009Publication date: June 9, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Kentaro Ishida, Takeaki Isobe, Masaaki Nanaumi, Takeshi Matsubara
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Publication number: 20100297525Abstract: A cell unit of a fuel cell includes a first separator, a first membrane electrode assembly, a second separator, a second membrane electrode assembly, and a third separator. Resin connecting sections are provided in the outer circumferential ends of the first separator, the second separator, and the third separator. A coupling pin is molded integrally with the resin connecting section of the first separator. A first hole and a second hole are formed on both sides of the coupling pin for selectively inserting a rebuilt pin into either of the first and second holes. A hole for inserting the coupling pin is formed at the center, and the first hole and the second hole are formed on both sides of the hole, in each of the resin connecting sections of the second and third separators.Type: ApplicationFiled: May 20, 2010Publication date: November 25, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Masahiro FUKUTA, Kentaro ISHIDA, Tatsuru SHISHIDO
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Publication number: 20100239931Abstract: A fuel cell includes a cathode side separator. An oxygen-containing gas flow field is formed on a surface of the cathode side separator. The oxygen-containing gas flow field includes an inlet channel having a plurality of flow grooves connected to the oxygen-containing gas supply passage, an outlet channel having a plurality of flow grooves connected to the oxygen-containing gas discharge passage, and an intermediate channel having flow grooves with both ends connected to the inlet channel and the outlet channel respectively. The flow grooves of the outlet channel are longer than the flow grooves of the inlet channel, and the flow grooves of the outlet channel are narrowed toward the oxygen-containing gas discharge passage.Type: ApplicationFiled: March 18, 2010Publication date: September 23, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Kentaro ISHIDA, Takeshi USHIO, Eri TERADA
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Publication number: 20090291350Abstract: A unit cell of a fuel cell is formed by sandwiching a membrane electrode assembly between a first metal separator and a second metal separator. The membrane electrode assembly includes a solid polymer electrolyte membrane having a reinforcement member on both surfaces of the outer end of the solid polymer electrolyte membrane. Frame members are provided on the reinforcement member outside an anode, and a fuel gas inlet channel and a fuel gas outlet channel are formed by the frame members, at positions corresponding to a fuel gas inlet buffer and a fuel gas outlet buffer.Type: ApplicationFiled: May 20, 2009Publication date: November 26, 2009Applicant: Honda Motor Co., Ltd.Inventors: Kentaro Ishida, Hiroyuki Tanaka
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Publication number: 20070254203Abstract: In a fuel cell module, a first membrane electrode assembly is sandwiched between a first metal separator and a second metal separator, and a second membrane electrode assembly is sandwiched between the second metal separator and the third metal separator. An oxygen-containing gas distribution section connected to a first oxygen-containing gas flow field is formed between the first metal separator and the second metal separator. The second metal separator has holes connecting the oxygen-containing gas distribution section to a second oxygen-containing gas flow field.Type: ApplicationFiled: April 26, 2007Publication date: November 1, 2007Applicant: Honda Motor Co., Ltd.Inventors: Kentaro Ishida, Seiji Sugiura
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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: 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