Patents by Inventor Takenori ONISHI
Takenori ONISHI 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: 20160049674Abstract: Provided is a fuel cell stack, comprising: a first fuel cell including a first membrane electrode assembly, and a first fuel supply portion having a first in-cell fuel flow channel; a second fuel cell arranged on a main surface of the first fuel cell, and including a second membrane electrode assembly and a second fuel supply portion having a second in-cell fuel flow channel; and a fuel distribution portion including a liquid fuel inlet, a main flow channel connected thereto, and first and second branched flow channels connecting an end of the main flow channel with the first and second in-cell fuel flow channels, respectively, wherein a total length of the first branched flow channel and the first in-cell fuel flow channel is substantially identical to that of the second branched flow channel and the second in-cell fuel flow channel. Also provided is a fuel cell system using the stack.Type: ApplicationFiled: September 5, 2012Publication date: February 18, 2016Applicant: SHARP KABUSHIKI KAISHAInventors: Tomohisa YOSHIE, Masashi MURAOKA, Takenori ONISHI, Hirotaka MIZUHATA, Mutsuko KOMODA, Shinobu TAKENAKA
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Publication number: 20150194640Abstract: A stacked body is pressed by a suitable pressing force in a stacking direction by a sufficient area. In a cell case (20) of a secondary cell (1), a pair of two facing faces among four faces each forming one side of an opening are curved wall faces (201) and (201) in the shape of being curved toward an inner side of the cell case (20), and the two facing curved wall faces (201) and (201) press an electrode group (40) in a stacking direction of the electrode group (40).Type: ApplicationFiled: June 26, 2013Publication date: July 9, 2015Inventors: Yoshihiro Tsukuda, Takenori Onishi, Kazuo Yamada
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Patent number: 9040208Abstract: A catalyst layer for a fuel cell membrane electrode assembly includes a plurality of agglomerates, adjacent ones of the plurality of agglomerates contacting with each other with pores provided between said adjacent ones of the plurality of agglomerates, each of the plurality of agglomerates being formed by packing a plurality of catalysts each consisting of noble metal fine particles supported on a fiber-like support material, adjacent ones of the plurality of catalysts contacting with each other with pores provided between said adjacent ones of the plurality of catalysts, and each of the plurality of catalysts contacting with a plurality of catalysts other than said each catalyst at a plurality of contact points. This allows providing a catalyst layer, a fuel cell membrane electrode assembly, and a fuel cell, each of which has compact size and excellent power generation performance, and a method for producing the same.Type: GrantFiled: May 3, 2010Date of Patent: May 26, 2015Assignees: OneD Material LLC, Sharp Kabushiki KaishaInventors: Masashi Muraoka, Kohtaroh Saitoh, Hirotaka Mizuhata, Takenori Onishi, Yimin Zhu, Ionel C. Stefan, Baixin Qian, Jay Goldman
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Patent number: 9006133Abstract: The present invention relates to electrochemical catalyst particles, including nanoparticles, which can be used membrane electrode assemblies and in fuel cells. In exemplary embodiments, the present invention provides electrochemical catalysts supported by various materials. Suitably the catalysts have an atomic ratio of oxygen to a metal in the nanoparticle of about 3 to about 6.Type: GrantFiled: October 22, 2009Date of Patent: April 14, 2015Assignees: OneD Material LLC, Sharp Kabushiki KaishaInventors: Yimin Zhu, Jay L. Goldman, Baixin Qian, Ionel C. Stefan, Mutsuko Komoda, Hirotaka Mizuhata, Takenori Onishi
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Patent number: 8968966Abstract: Provided is a fuel battery including: a fuel battery cell assembly having at least two fuel battery cells coplanarly disposed, the fuel battery cell including a membrane electrode assembly having an anode, an electrolytic membrane, and a cathode stacked on one another in this order, and a flow channel plate provided on an anode side and having on an anode-side surface thereof an in-cell fuel flow channel through which liquid fuel flows; and a fuel distributor having an out-cell fuel flow channel connected to each of the in-cell fuel flow channels to distribute the liquid fuel to the fuel battery cells.Type: GrantFiled: August 3, 2012Date of Patent: March 3, 2015Assignee: Sharp Kabushiki KaishaInventors: Takenori Onishi, Tomohisa Yoshie, Hirotaka Mizuhata, Mutsuko Komoda, Shinobu Takenaka, Masashi Muraoka
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Publication number: 20140134509Abstract: A direct alcohol fuel cell system including a fuel cell unit having a direct alcohol fuel cell including an anode electrode, an electrolyte membrane, and a cathode electrode in this order, a fuel supply unit for supplying alcohol fuel to the anode electrode, a detecting unit for detecting a current value I of a current flowing between the anode electrode and the cathode electrode of the direct alcohol fuel cell or an output voltage value V of the direct alcohol fuel cell, and a temperature T of the direct alcohol fuel cell, and a control unit for determining a supply quantity Q of alcohol fuel to the anode electrode based on detection results of the current value I or the output voltage value V, and the temperature T and controlling the fuel supply unit so that the supply quantity of the alcohol fuel is adjusted to the supply quantity Q.Type: ApplicationFiled: May 31, 2012Publication date: May 15, 2014Applicant: c/o Sharp Kabushiki KaishaInventors: Hirotaka Mizuhata, Tomohisa Yoshie, Mutsuko Yamamoto, Shinobu Takenaka, Takenori Onishi, Masashi Muraoka
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Publication number: 20140106243Abstract: A fuel cell including a unit cell having an anode, an electrolyte membrane, and a cathode in this order, a liquid fuel accommodation portion composed of a space opening on an anode side and arranged on the anode side, for accommodating or allowing flow of liquid fuel, and a first moisture retention layer arranged between the unit cell and the liquid fuel accommodation portion is provided. This fuel cell may further include a second moisture retention layer arranged on the cathode. This fuel cell can be a direct alcohol fuel cell. For example, pure methanol or a methanol aqueous solution is adopted as the liquid fuel.Type: ApplicationFiled: May 23, 2012Publication date: April 17, 2014Applicant: C/O SHARP KABUSHIKI KAISHAInventors: Shinobu Takenaka, Mutsuko Komoda, Tomohisa Yoshie, Hirotaka Mizuhata, Takenori Onishi, Masashi Muraoka
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Publication number: 20130034793Abstract: Provided is a fuel battery including: a fuel battery cell assembly having at least two fuel battery cells coplanarly disposed, the fuel battery cell including a membrane electrode assembly having an anode, an electrolytic membrane, and a cathode stacked on one another in this order, and a flow channel plate provided on an anode side and having on an anode-side surface thereof an in-cell fuel flow channel through which liquid fuel flows; and a fuel distributor having an out-cell fuel flow channel connected to each of the in-cell fuel flow channels to distribute the liquid fuel to the fuel battery cells.Type: ApplicationFiled: August 3, 2012Publication date: February 7, 2013Inventors: Takenori ONISHI, Tomohisa YOSHIE, Hirotaka MIZUHATA, Mutsuko KOMODA, Shinobu TAKENAKA, Masashi MURAOKA
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Publication number: 20130029242Abstract: A membrane electrode assembly having a temperature responsive layer whose material permeability is reduced with temperature rise, on a laminate including an anode catalyst layer, an electrolyte membrane and a cathode catalyst layer in this order, and a fuel cell using the same are provided. The temperature responsive layer may be composed of a porous layer containing a temperature responsive material whose moisture content changes at a phase transition temperature. It is possible to repress increase in fuel supply amount to the anode catalyst layer in association with temperature rise, and moisture evaporation from the electrolyte membrane in association with temperature rise, and to prevent excessive temperature rise and thermal runaway of the fuel cell.Type: ApplicationFiled: February 3, 2011Publication date: January 31, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Hirotaka Mizuhata, Tomohisa Yoshie, Shinobu Takenaka, Takenori Onishi, Masashi Muraoka
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Publication number: 20110275005Abstract: The present invention relates to interfacial layers for use m membrane electrode assemblies that comprise nanowire-supported catalysts, and fuel cells comprising such membrane electrode assemblies. The present invention also relates to methods of preparing membrane electrode assemblies and fuel cells comprising interfacial layers and nanowire-supported catalysts.Type: ApplicationFiled: October 22, 2009Publication date: November 10, 2011Applicant: Nanosys, IncInventors: Yimin Zhu, Jay L. Goldman, Baixin Qian, Ionel C. Stefan, Masashi Muraoka, Takenori Onishi, Kohtaroh Saitoh, Hirotaka Mizuhata
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Publication number: 20110275011Abstract: The present invention relates to electrochemical catalyst particles, including nanoparticles, which can be used membrane electrode assemblies and in fuel cells. In exemplary embodiments, the present invention provides electrochemical catalysts supported by various materials. Suitably the catalysts have an atomic ratio of oxygen to a metal in the nanoparticle of about 3 to about 6.Type: ApplicationFiled: October 22, 2009Publication date: November 10, 2011Applicants: Sharp Kabushiki Kaisha, Nanosys, Inc.Inventors: Yimin Zhu, Jay L. Goldman, Baixin Qian, Ionel C. Stefan, Mutsuko Komoda, Hirotaka Mizuhata, Takenori Onishi
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Publication number: 20110008707Abstract: A catalyst layer for a fuel cell membrane electrode assembly includes a plurality of agglomerates, adjacent ones of the plurality of agglomerates contacting with each other with pores provided between said adjacent ones of the plurality of agglomerates, each of the plurality of agglomerates being formed by packing a plurality of catalysts each consisting of noble metal fine particles supported on a fiber-like support material, adjacent ones of the plurality of catalysts contacting with each other with pores provided between said adjacent ones of the plurality of catalysts, and each of the plurality of catalysts contacting with a plurality of catalysts other than said each catalyst at a plurality of contact points. This allows providing a catalyst layer, a fuel cell membrane electrode assembly, and a fuel cell, each of which has compact size and excellent power generation performance, and a method for producing the same.Type: ApplicationFiled: May 3, 2010Publication date: January 13, 2011Applicants: NANOSYS, Inc., Sharp Kabushiki KaishaInventors: Masashi MURAOKA, Kohtaroh Saitoh, Hirotaka Mizuhata, Takenori Onishi, Yimin Zhu, Ionel C. Stefan, Baixin Qian, Jay L. Goldman
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Publication number: 20090253013Abstract: A fuel cell electrode includes a catalyst layer including an ion conductive substance, an electron conductive substance, and a catalytic activity substance. The catalytic activity substance includes Pt and at least one metal other than Pt. The catalyst layer includes at least two regions differing in the content ratio of Pt. A membrane electrode assembly and a fuel cell include the fuel cell electrode.Type: ApplicationFiled: January 23, 2008Publication date: October 8, 2009Applicant: SHARP KABUSHIKI KAISHAInventor: Takenori ONISHI