Patents by Inventor Yasuo Takebe
Yasuo Takebe 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: 10497953Abstract: A fuel cell activation apparatus including: a storage battery; a first current sensor detecting a current outputted by the storage battery; a first switch switching between supplying the current outputted by the storage battery and supplying a current provided from the system power supply; a second switch switching between transmitting a result of detecting by the first current sensor and transmitting a result of detecting by a second current sensor which detects the current provided from the system power supply; and a control unit switching between a normal mode for activating, based on the result of detection performed by the second current sensor, the fuel cell using the current provided from the system power supply and a self-sustained mode for activating, based on the result of detection performed by the first current sensor, the fuel cell using the current outputted by the storage battery.Type: GrantFiled: January 29, 2014Date of Patent: December 3, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shoichi Toya, Yasuo Takebe
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Patent number: 9257712Abstract: In a fuel cell system of the present invention, a reformed gas generated in a reformer (R1) being activated is supplied to a fuel cell stack (F1), and an off-gas discharged from the fuel cell stack (F1) is supplied to a heat supply device (B2) provided for a reformer (R2) being deactivated. By activating at least one reformer (Rn), all of a plurality of reformers (Rn) can be warmed-up. Therefore, energy consumption in a standby state can be suppressed, and the fuel cell system can be started-up quickly in emergencies. The reformed gas may be supplied to the heat supply device (B2) instead of the off-gas.Type: GrantFiled: July 4, 2011Date of Patent: February 9, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuo Takebe, Kunihiro Ukai
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Publication number: 20150333350Abstract: A fuel cell activation apparatus including: a storage battery; a first current sensor detecting a current outputted by the storage battery; a first switch switching between supplying the current outputted by the storage battery and supplying a current provided from the system power supply; a second switch switching between transmitting a result of detecting by the first current sensor and transmitting a result of detecting by a second current sensor which detects the current provided from the system power supply; and a control unit switching between a normal mode for activating, based on the result of detection performed by the second current sensor, the fuel cell using the current provided from the system power supply and a self-sustained mode for activating, based on the result of detection performed by the first current sensor, the fuel cell using the current outputted by the storage battery.Type: ApplicationFiled: January 29, 2014Publication date: November 19, 2015Inventors: Shoichi TOYA, Yasuo TAKEBE
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Publication number: 20130108937Abstract: In a fuel cell system of the present invention, a reformed gas generated in a reformer (R1) being activated is supplied to a fuel cell stack (F1), and an off-gas discharged from the fuel cell stack (F1) is supplied to a heat supply device (B2) provided for a reformer (R2) being deactivated. By activating at least one reformer (Rn), all of a plurality of reformers (Rn) can be warmed-up. Therefore, energy consumption in a standby state can be suppressed, and the fuel cell system can be started-up quickly in emergencies. The reformed gas may be supplied to the heat supply device (B2) instead of the off-gas.Type: ApplicationFiled: July 4, 2011Publication date: May 2, 2013Applicant: PANASONIC CORPORATIONInventors: Yasuo Takebe, Kunihiro Ukai
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Publication number: 20130011769Abstract: A fuel cell separator having a turn portion of a serpentine-shaped reaction gas passage region. In the turn portion, a recessed portion is defined by an outer end of the turn portion and oblique boundaries between the recessed portion and a pair of passage groove group. In the turn portion, a plurality of protrusions, which vertically extend from a bottom face of the recessed portion and are arranged in an island form, are disposed such that one or more protrusions form a plurality of columns lined up and spaced apart from each other with a gap in a direction in which the outer end extends and one or more protrusions form a plurality of rows lined up and spaced apart from each other with a gap in a direction perpendicular to the direction in which the outer end extends.Type: ApplicationFiled: July 13, 2012Publication date: January 10, 2013Applicant: Panasonic CorporationInventors: Hiroki Kusakabe, Toshihiro Matsumoto, Norihiko Kawabata, Yoshiki Nagao, Shinsuke Takeguchi, Yasuo Takebe, Masaki Nobuoka
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Patent number: 8278008Abstract: A fuel cell separator and a fuel cell are provided that can improve uniformity in reaction gas flow rate and can prevent flooding due to excessive condensed water in passage grooves appropriately. A reaction gas passage region (101) of a separator (2) has a flow splitting region (21) having a passage groove group where the reaction gas is split, and one or more flow merge regions (22) having a recessed portion in which the reaction gas is mixed and connecting a plurality of flow splitting regions so that the passage groove group of the adjacent flow splitting regions (21) are connected to the recessed portion, and protrusions (27) vertically extend from a bottom face of the recessed portion and arranged in an island form. A pair of passage groove groups connected to the recessed portion of the flow merge region (22) is formed so as to have a greater number of grooves in the upstream passage groove group than the number of grooves of grooves in the downstream passage groove group.Type: GrantFiled: August 4, 2006Date of Patent: October 2, 2012Assignee: Panasonic CorporationInventors: Hiroki Kusakabe, Toshihiro Matsumoto, Norihiko Kawabata, Yoshiki Nagao, Shinsuke Takeguchi, Yasuo Takebe, Masaki Nobuoka
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Patent number: 8278007Abstract: Even when a reaction gas flows into a gap formed between a gasket and a membrane electrode assembly, the flowing of the reaction gas to the outside without flowing through an electrode is prevented and thus a decrease in power generation efficiency is prevented. In order to allow the water vapor contained in the reaction gas that flows into an anode-side gap 10a formed between an anode-side gasket 9a and a membrane electrode assembly 5 to condense in at least a part of the gap 10a, and to allow the condensed water to fill the gap 10a, the upstream portion of a cooling fluid channel 8a of an anode-side separator 6a is formed such that it includes a region corresponding to the gap 10a, and the upstream portion is formed such that it includes a region corresponding to a middle stream portion and subsequent portion of a fuel gas channel 7a.Type: GrantFiled: December 28, 2005Date of Patent: October 2, 2012Assignee: Panasonic CorporationInventors: Miho Gemba, Yasuo Takebe, Yoichiro Tsuji, Yoshihiro Hori, Yasuhiro Seki
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Patent number: 8192893Abstract: A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially square shape; a pair of membrane-like first membrane reinforcing members (10a) disposed on one main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said one main surface; and a pair of membrane-like second membrane reinforcing members (10b) disposed on another main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said another main surface, wherein: portions of the polymer electrolyte membrane (1) at which portions the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed are concave; and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed such that main surfaces thereof are exposed, and the first membrane reinforcing meType: GrantFiled: November 6, 2007Date of Patent: June 5, 2012Assignee: Panasonic CorporationInventors: Atsushi Nogi, Takeou Okanishi, Yoichiro Tsuji, Aoi Muta, Haruhiko Shintani, Yasuo Takebe
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Patent number: 7943261Abstract: A method of operating a fuel cell capable of suppressing degradation of a fuel cell caused by starting and stopping of the fuel cell, including carrying out a restoring operation by decreasing a voltage of the cathode following termination of the fuel cell.Type: GrantFiled: October 30, 2003Date of Patent: May 17, 2011Assignee: Panasonic CorporationInventors: Yasuo Takebe, Kazuhito Hatoh, Hiroki Kusakabe, Teruhisa Kanbara, Makoto Uchida, Shinya Kosako, Yoichiro Tsuji, Yasushi Sugawara
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Publication number: 20100068588Abstract: A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially square shape; a pair of membrane-like first membrane reinforcing members (10a) disposed on one main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said one main surface; and a pair of membrane-like second membrane reinforcing members (10b) disposed on another main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said another main surface, wherein: portions of the polymer electrolyte membrane (1) at which portions the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed are concave; and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed such that main surfaces thereof are exposed, and the first membrane reinforcing meType: ApplicationFiled: November 6, 2007Publication date: March 18, 2010Inventors: Atsushi Nogi, Takeou Okanishi, Yoichiro Tsuji, Aoi Muta, Haruhiko Shintani, Yasuo Takebe
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Publication number: 20090162727Abstract: A fuel cell separator and a fuel cell are provided that can improve uniformity in reaction gas flow rate and can prevent flooding due to excessive condensed water in passage grooves appropriately. A reaction gas passage region (101) of a separator (2) has a flow splitting region (21) having a passage groove group where the reaction gas is split, and one or more flow merge regions (22) having a recessed portion in which the reaction gas is mixed and connecting a plurality of flow splitting regions so that the passage groove group of the adjacent flow splitting regions (21) are connected to the recessed portion, and protrusions (27) vertically extend from a bottom face of the recessed portion and arranged in an island form. A pair of passage groove groups connected to the recessed portion of the flow merge region (22) is formed so as to have a greater number of grooves in the upstream passage groove group than the number of grooves of grooves in the downstream passage groove group.Type: ApplicationFiled: August 4, 2006Publication date: June 25, 2009Inventors: Hiroki Kusakabe, Toshihiro Matsumoto, Norihiko Kawabata, Yoshiki Nagao, Shinsuke Takeguchi, Yasuo Takebe, Masaki Nobuoka
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Publication number: 20090136823Abstract: A fuel cell separator (2) of the present invention has a turn portion of a serpentine-shaped reaction gas passage region (101). In the turn portion, a recessed portion (28) is defined by an outer end (28a) of the turn portion and oblique boundaries between the recessed portion (28) and a pair of passage groove group.Type: ApplicationFiled: December 27, 2006Publication date: May 28, 2009Inventors: Hiroki Kusakabe, Toshihiro Matsumoto, Norihiko Kawabata, Yoshiki Nagao, Shinsuke Takeguchi, Yasuo Takebe, Masaki Nobuoka
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Patent number: 7494737Abstract: The present invention is intended to enable efficient assembly of a fuel cell stack without causing any damage to the conductive separator. In a fuel cell including an anode, a cathode, an electrolyte membrane interposed between the anode and the cathode, and conductive separators each having manifold apertures 12 and a flow channel 16 for supplying a gas to the anode or the cathode, manifold aperture connecting portions 15 are formed at an inlet-side end and an outlet-side end of the flow channel 16, respectively. Each of the manifold aperture connecting portions 15 is recessed below the upper surface of the conductive separator 11. Cover plates are fitted and fixed to the recessed portions, respectively.Type: GrantFiled: December 8, 2005Date of Patent: February 24, 2009Assignee: Panasonic CorporationInventors: Shinichi Arisaka, Yasuo Takebe, Hideo Ohara, Kazuhito Hatoh, Eiichi Yasumoto
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Patent number: 7468206Abstract: The present invention provides an organic ultra-thin film firmly fixed to a substrate with the film thickness ranging from tens of nm to hundreds of nm. The organic ultra-thin film comprises polymers fixed on a substrate by M2—O—A— bond in which A represents an Si, Ge, Ti, Sn or Zr atom in the polymer, and M2 represents an atom in the substrate) or by a coordinate bond, the polymers are combined with each other by —A1—O—A1?— bond in which A1 and A1? are Si, Ge, Ti, Sn, Zr or S or by a coordinate bond.Type: GrantFiled: December 17, 1997Date of Patent: December 23, 2008Assignee: Panasonic CorporationInventors: Tadashi Ootake, Yasuo Takebe, Norihisa Mino, Hiroaki Takezawa
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Publication number: 20080261095Abstract: A membrane-electrode assembly (1) of the present invention comprises: a quadrate polymer electrolyte membrane (2); a pair of catalyst layers provided to sandwich the polymer electrolyte membrane except for a peripheral portion of the polymer electrolyte membrane; and a pair of gas diffusion layers (3) provided respectively on the pair of the catalyst layers, the membrane-electrode assembly (1) being incorporated into a fuel cell by being sandwiched between a pair of separators on each of which a reaction gas passage (A) or (C) is concavely formed in a gas diffusion layer contacting region of an inner surface thereof, the gas diffusion layer contacting region being a region contacting the gas diffusion layer, wherein: each of the reaction gas passages (A) and (C) in the gas diffusion layer contacting region is formed to have a serpentine shape which extends from upstream to downstream in a direction from a first side (2a) of the polymer electrolyte membrane 1 to a third side (2c) facing the first side along aType: ApplicationFiled: June 19, 2006Publication date: October 23, 2008Inventors: Masaki Yamauchi, Yoshihiro Hori, Yasuo Takebe, Yasuhiro Seki
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Publication number: 20080233447Abstract: Even when a reaction gas flows into a gap formed between a gasket and a membrane electrode assembly, the flowing of the reaction gas to the outside without flowing through an electrode is prevented and thus a decrease in power generation efficiency is prevented. In order to allow the water vapor contained in the reaction gas that flows into an anode-side gap 10a formed between an anode-side gasket 9a and a membrane electrode assembly 5 to condense in at least a part of the gap 10a, and to allow the condensed water to fill the gap 10a, the upstream portion of a cooling fluid channel 8a of an anode-side separator 6a is formed such that it includes a region corresponding to the gap 10a, and the upstream portion is formed such that it includes a region corresponding to a middle stream portion and subsequent portion of a fuel gas channel 7a.Type: ApplicationFiled: December 28, 2005Publication date: September 25, 2008Inventors: Miho Gemba, Yasuo Takebe, Yoichiro Tsuji, Yoshihiro Hori, Yasuhiro Seki
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Patent number: 7364813Abstract: The present invention provides ink for forming a catalyst layer containing at least a cation conductive polymer electrolyte, catalyst-supporting particles including conductive carbon particles and an electrode catalyst supported thereon, and a dispersion medium, wherein the polymer electrolyte has a mean inertia radius of 150 to 300 nm. A catalyst layer made of the catalyst layer ink improves in gas diffusion property and increases cell voltage, which allows providing a proton conductive polymer electrolyte fuel cell capable of maintaining the high cell voltage for a long time.Type: GrantFiled: September 9, 2004Date of Patent: April 29, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasushi Sugawara, Junji Morita, Takeshi Yonamine, Yasuo Takebe
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Publication number: 20080026270Abstract: An air purifying apparatus for a fuel cell is provided on a flow route of air supplied to the fuel cell. The air purifying apparatus includes a first pollutant-removing means that oxidizes a pollutant in the air and a second pollutant-removing means that adsorbs and removes the pollutant. The first pollutant-removing means includes a catalyst that oxidizes the pollutant by means of oxygen in the air, and the catalyst has an oxidizing activity with respect to at least one selected from the group consisting of organic substances, nitrogen oxides, sulfur oxides, ammonia, hydrogen sulfide, and carbon monoxide. The first pollutant-removing means may include an ozone generator. The second pollutant-removing means adsorbs and removes the pollutant by means of a porous material carrying at least one selected from the group consisting of permanganates, alkali salts, alkaline hydroxides, and alkaline oxides.Type: ApplicationFiled: September 27, 2007Publication date: January 31, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Yasuo Takebe, Makoto Uchida, Kazuhito Hatoh
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Publication number: 20080014486Abstract: The temperature of cooling fluid in an inlet side manifold is increased during power generation by influence of the temperature of heat generation sections of cells. This causes variation in temperature among unit cells in a fuel cell stack, causing flooding and variation in output voltage. The invention provides a fuel cell in which an increase in temperature of cooling fluid in an inlet side manifold is suppressed, and that has an excellent durability and a stable output voltage. The fuel cell has flow paths for cooling fluid in cathode side separator plates and anode side separator plates, the flow paths connecting an inlet side manifold and an outlet side manifold for cooling fluid. Each of the flow paths for cooling fluid includes a first cooling section for cooling a heat generation section, that is, an area corresponding to a cathode or an anode, and a second cooling section located between the first cooling section and the inlet side manifold for cooling fluid.Type: ApplicationFiled: November 8, 2005Publication date: January 17, 2008Inventors: Shigeyuki Unoki, Shinsuke Takeguchi, Yasuo Takebe
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Publication number: 20070248853Abstract: The present invention provides a fuel cell system which is capable of appropriately removing nonionic sulfur compound contained in recovered water in a water recovery device, which is used for generating a hydrogen-containing gas in a hydrogen generator, and a method for operating the fuel cell system.Type: ApplicationFiled: September 27, 2005Publication date: October 25, 2007Inventors: Kunihiro Ukai, Yasuo Takebe