Patents by Inventor Masashi Muraoka
Masashi Muraoka 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: 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: 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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Patent number: 8935070Abstract: In one embodiment, a vehicle brake pressure controller includes: a sensor and a control section. The sensor detects a dynamic characteristic quantity of a vehicle, and outputs it as first information. The control section includes: an input section configured to receive the first information; a conversion processing section configured to convert the first information into second information having a standardized format; and a correction processing section configured to correct the second information into third information, depending on the vehicle. Hence, the control section performs a brake pressure control based on the third information.Type: GrantFiled: March 29, 2013Date of Patent: January 13, 2015Assignee: Nissin Kogyo Co., Ltd.Inventor: Masashi Muraoka
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Publication number: 20140227621Abstract: A fuel cell stack formed by stacking two or more fuel cell layers each constituted of one or more unit cell and a fuel cell system including the same are provided. Any two fuel cell layers adjacent to each other each have one or more gap region. At least a part of the gap region in one fuel cell layer of any two fuel cell layers adjacent to each other is in contact with a unit cell constituting the other fuel cell layer. The gap region in one fuel cell layer and the gap region in the other fuel cell layer communicate with each other. The fuel cell stack is excellent in fuel or oxidizing agent supply performance and it realizes high power density.Type: ApplicationFiled: February 28, 2014Publication date: August 14, 2014Applicant: Sharp Kabushiki KaishaInventors: Toshiyuki FUJITA, Hironori KAMBARA, Masashi MURAOKA, Tomohisa YOSHIE
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Patent number: 8741500Abstract: A fuel cell stack formed by stacking two or more fuel cell layers each constituted of one or more unit cell and a fuel cell system including the same are provided. Any two fuel cell layers adjacent to each other each have one or more gap region. At least a part of the gap region in one fuel cell layer of any two fuel cell layers adjacent to each other is in contact with a unit cell constituting the other fuel cell layer. The gap region in one fuel cell layer and the gap region in the other fuel cell layer communicate with each other. The fuel cell stack is excellent in fuel or oxidizing agent supply performance and it realizes high power density.Type: GrantFiled: July 30, 2008Date of Patent: June 3, 2014Assignee: Sharp Kabushiki KaishaInventors: Toshiyuki Fujita, Hironori Kambara, Masashi Muraoka, Tomohisa Yoshie
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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: 20130261905Abstract: In one embodiment, a vehicle brake pressure controller includes: a sensor and a control section. The sensor detects a dynamic characteristic quantity of a vehicle, and outputs it as first information. The control section includes: an input section configured to receive the first information; a conversion processing section configured to convert the first information into second information having a standardized format; and a correction processing section configured to correct the second information into third information, depending on the vehicle. Hence, the control section performs a brake pressure control based on the third information.Type: ApplicationFiled: March 29, 2013Publication date: October 3, 2013Applicant: NISSIN KOGYO CO., LTD.Inventor: 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: 20120034541Abstract: Provided is a fuel cell stack having reduced thickness and weight and an improved output density. The fuel cell stack according to the present invention includes two or more stacked fuel cell layers, and is characterized in that at least one of the fuel cell layers is formed by arranging two or more composite unit cells in an identical plane with a gap provided therebetween, that the composite unit cell includes a plurality of unit cells and a fuel supply portion for supplying fuel to anode electrodes of the unit cells, and that the anode electrodes of the plurality of unit cells are arranged to face the fuel supply portion.Type: ApplicationFiled: March 31, 2010Publication date: February 9, 2012Inventors: Masashi Muraoka, Toshiyuki Fujita, Tomohisa Yoshie, Hironori Kambara
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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: 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: 20100221633Abstract: A fuel cell stack formed by stacking two or more fuel cell layers each constituted of one or more unit cell and a fuel cell system including the same are provided. Any two fuel cell layers adjacent to each other each have one or more gap region. At least a part of the gap region in one fuel cell layer of any two fuel cell layers adjacent to each other is in contact with a unit cell constituting the other fuel cell layer. The gap region in one fuel cell layer and the gap region in the other fuel cell layer communicate with each other. The fuel cell stack is excellent in fuel or oxidizing agent supply performance and it realizes high power density.Type: ApplicationFiled: July 30, 2008Publication date: September 2, 2010Inventors: Toshiyuki Fujita, Hironori Kambara, Masashi Muraoka, Tomohisa Yoshie