Patents by Inventor Ayumi Mizuno
Ayumi Mizuno 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: 11728499Abstract: In this fuel cell, a cathode-side porous film that covers a cathode electrode is interposed between the cathode electrode and an air supply layer, the cathode electrode constituting electrolyte film/electrode structures. In addition, breathing holes are formed in the cathode-side porous film, and the air flowing through air supply passages passes through the breathing holes and is supplied to the cathode electrode.Type: GrantFiled: March 26, 2019Date of Patent: August 15, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Daigo Mukasa, Hitoshi Nagasaki, Takehiro Mugishima, Akio Fujimoto, Ayumi Mizuno
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Patent number: 11217807Abstract: Electrolyte membrane electrode structures that constitute a fuel cell according to the present invention have a staggered arrangement wherein a part of an anode electrode faces a part of one of two adjacent cathode electrodes, with an electrolyte membrane being interposed therebetween, and another part of the anode electrode faces a part of the other cathode electrode, with an interconnect part being interposed therebetween, said interconnect part being formed in the electrolyte membrane. The electrolyte membrane electrode structures are sealed in a laminate layer which is obtained by bonding an anode-side porous film that covers the anode electrode and a cathode-side porous film that covers the cathode electrodes with each other.Type: GrantFiled: March 26, 2019Date of Patent: January 4, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Takehiro Mugishima, Hitoshi Nagasaki, Akio Fujimoto, Ayumi Mizuno
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Publication number: 20210050611Abstract: In this fuel cell, a cathode-side porous film that covers a cathode electrode is interposed between the cathode electrode and an air supply layer, the cathode electrode constituting electrolyte film/electrode structures. In addition, breathing holes are formed in the cathode-side porous film, and the air flowing through air supply passages passes through the breathing holes and is supplied to the cathode electrode.Type: ApplicationFiled: March 26, 2019Publication date: February 18, 2021Inventors: Daigo Mukasa, Hitoshi Nagasaki, Takehiro Mugishima, Akio Fujimoto, Ayumi Mizuno
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Publication number: 20210028477Abstract: Electrolyte membrane electrode structures that constitute a fuel cell according to the present invention have a staggered arrangement wherein a part of an anode electrode faces a part of one of two adjacent cathode electrodes, with an electrolyte membrane being interposed therebetween, and another part of the anode electrode faces a part of the other cathode electrode, with an interconnect part being interposed therebetween, said interconnect part being formed in the electrolyte membrane. The electrolyte membrane electrode structures are sealed in a laminate layer which is obtained by bonding an anode-side porous film that covers the anode electrode and a cathode-side porous film that covers the cathode electrodes with each other.Type: ApplicationFiled: March 26, 2019Publication date: January 28, 2021Inventors: Takehiro Mugishima, Hitoshi Nagasaki, Akio Fujimoto, Ayumi Mizuno
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Patent number: 10784525Abstract: In a method of inspecting output of a fuel cell, a reduction step is performed, and thereafter, a measurement step is performed. In the reduction step, reduction treatment is applied to electrode catalyst contained in an anode and a cathode. After the reduction treatment is applied to the electrode catalyst of the anode and the cathode, in the measurement step, measurement current which is smaller than rated current of the fuel cell, is applied to the anode and the cathode to inspect the output of the fuel cell.Type: GrantFiled: September 25, 2018Date of Patent: September 22, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Hodaka Tsuge, Takashi Kato, Tadaaki Yamada, Ayumi Mizuno, You Shimomura
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Patent number: 10770739Abstract: In a method of inspecting an output of a fuel cell, an oxidation step is performed, and thereafter, a measurement step is performed. In the oxidation step, oxidation treatment is applied to an electrode catalyst contained in an anode and a cathode. After the oxidation treatment is applied to the electrode catalyst of the anode and the cathode, in the measurement step, a measurement current which is smaller than a rated current of the fuel cell is applied to the anode and the cathode to measure the output of the fuel cell.Type: GrantFiled: September 25, 2018Date of Patent: September 8, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Hodaka Tsuge, Takashi Kato, Tadaaki Yamada, Ayumi Mizuno, You Shimomura
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Patent number: 10547065Abstract: In the fuel cell, an electrode layer on each of two surfaces of an electrolyte membrane is divided into a plurality of electrode regions by a dividing groove; a unit cell is constituted by a stacked structure including the electrolyte membrane, one electrode region on one surface of the electrolyte membrane, and one electrode region on the other surface thereof; and a plurality of the unit cells are connected in series by the interconnector part formed in the electrolyte membrane. At least the electrode layer on the one surface includes a catalyst layer having catalytic activity and containing proton conductive resin; and a protection layer located between the catalyst layer and the electrolyte membrane, having electric conductivity and having a higher filling density of proton conductive resin than that of the catalyst layer. The interconnector part is covered with the protection layer on the one surface.Type: GrantFiled: August 24, 2016Date of Patent: January 28, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Takehiro Mugishima, Hitoshi Nagasaki, Ayumi Mizuno, Satoshi Yonezawa, Kazuhide Matsuo
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Patent number: 10547063Abstract: Provided is a fuel cell capable of easily forming an interconnector part electrically connecting adjacent unit cells in a planar array fuel cell. In the fuel cell, an electrode layer on each of two surfaces of an electrolyte membrane is divided into a plurality of electrode regions by a dividing groove; a unit cell is constituted by a stacked structure including the electrolyte membrane, one electrode region on one surface of the electrolyte membrane, and one electrode region on the other surface thereof; and the plurality of the unit cells are connected in series by the interconnector part formed in the electrolyte membrane. The interconnector part is formed by heating and carbonizing a proton conductive resin in the electrolyte membrane. The proton conductive resin can be heated by laser beam irradiation.Type: GrantFiled: August 24, 2016Date of Patent: January 28, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Satoshi Yonezawa, Hitoshi Nagasaki, Takehiro Mugishima, Kazuhide Matsuo, Ayumi Mizuno
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Publication number: 20190103618Abstract: In a method of inspecting output of a fuel cell, a reduction step is performed, and thereafter, a measurement step is performed. In the reduction step, reduction treatment is applied to electrode catalyst contained in an anode and a cathode. After the reduction treatment is applied to the electrode catalyst of the anode and the cathode, in the measurement step, measurement current which is smaller than rated current of the fuel cell, is applied to the anode and the cathode to inspect the output of the fuel cell.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventors: Hodaka Tsuge, Takashi Kato, Tadaaki Yamada, Ayumi Mizuno, You Shimomura
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Publication number: 20190103620Abstract: In a method of inspecting an output of a fuel cell, an oxidation step is performed, and thereafter, a measurement step is performed. In the oxidation step, oxidation treatment is applied to an electrode catalyst contained in an anode and a cathode. After the oxidation treatment is applied to the electrode catalyst of the anode and the cathode, in the measurement step, a measurement current which is smaller than a rated current of the fuel cell is applied to the anode and the cathode to measure the output of the fuel cell.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventors: Hodaka Tsuge, Takashi Kato, Tadaaki Yamada, Ayumi Mizuno, You Shimomura
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Publication number: 20190051915Abstract: Provided is a fuel cell capable of easily forming an interconnector part electrically connecting adjacent unit cells in a planar array fuel cell. In the fuel cell, an electrode layer on each of two surfaces of an electrolyte membrane is divided into a plurality of electrode regions by a dividing groove; a unit cell is constituted by a stacked structure including the electrolyte membrane, one electrode region on one surface of the electrolyte membrane, and one electrode region on the other surface thereof; and the plurality of the unit cells are connected in series by the interconnector part formed in the electrolyte membrane. The interconnector part is formed by heating and carbonizing a proton conductive resin in the electrolyte membrane. The proton conductive resin can be heated by laser beam irradiation.Type: ApplicationFiled: August 24, 2016Publication date: February 14, 2019Inventors: Satoshi Yonezawa, Hitoshi Nagasaki, Takehiro Mugishima, Kazuhide Matsuo, Ayumi Mizuno
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Publication number: 20190051912Abstract: In the fuel cell, an electrode layer on each of two surfaces of an electrolyte membrane is divided into a plurality of electrode regions by a dividing groove; a unit cell is constituted by a stacked structure including the electrolyte membrane, one electrode region on one surface of the electrolyte membrane, and one electrode region on the other surface thereof; and a plurality of the unit cells are connected in series by the interconnector part formed in the electrolyte membrane. At least the electrode layer on the one surface includes a catalyst layer having catalytic activity and containing proton conductive resin; and a protection layer located between the catalyst layer and the electrolyte membrane, having electric conductivity and having a higher filling density of proton conductive resin than that of the catalyst layer. The interconnector part is covered with the protection layer on the one surface.Type: ApplicationFiled: August 24, 2016Publication date: February 14, 2019Inventors: Takehiro Mugishima, Hitoshi Nagasaki, Ayumi Mizuno, Satoshi Yonezawa, Kazuhide Matsuo
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Publication number: 20190006687Abstract: In a method of activating a fuel cell, after a voltage application step is performed, a humidifying step is performed. In the voltage application step, a hydrogen gas is supplied to an anode, and an inert gas is supplied to a cathode. In the meanwhile, cyclic voltage which is increased and decreased within a predetermined range is applied to the fuel cell. In the humidifying step, in a state where application of the voltage is stopped, a humidified gas containing water vapor is supplied to at least one of the anode and the cathode.Type: ApplicationFiled: June 25, 2018Publication date: January 3, 2019Inventors: Hodaka Tsuge, Ayumi Mizuno, Takashi Kato, Tadaaki Yamada, Koichiro Sato, Yo Shimomura
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Publication number: 20090117263Abstract: A method of producing an electrode layer for a fuel cell, with which the electrode layer is produced by heating and drying an electrode paste (41) applied on a sheet-like base material (42). The method includes a process of heating the electrode paste from below the sheet-like base material. Vapor (74) produced above the electrode paste is removed by the heating to produce the electrode layer.Type: ApplicationFiled: October 18, 2005Publication date: May 7, 2009Applicant: HONDA MOTOR CO., LTD.Inventors: Hideki Kaido, Youhei Kobayashi, Ayumi Mizuno, Keiko Eto, Ichiro Tanaka