Patents by Inventor Yoko Sakiyama
Yoko Sakiyama 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: 12234565Abstract: The purpose of the present invention is to provide a composite electrolyte membrane which has excellent chemical resistance and can maintain sufficient mechanical strength even under conditions of high humidity and high pressure, which are the operating conditions for electrochemical hydrogen pumps and water electrolyzers. This composite electrolyte membrane, which is for achieving said purpose, has a composite layer obtained by combining a polyelectrolyte with a mesh woven material that satisfies (1) and (2) and comprises liquid crystal polyester fibers or polyphenylene sulfide fibers. (1): Mesh thickness (?m)/fiber diameter (?m)<2.0. (2): Opening (?m)/fiber diameter (?m)>1.0.Type: GrantFiled: March 25, 2019Date of Patent: February 25, 2025Assignee: Toray Industries, Inc.Inventors: Kenta Minamibayashi, Yoshitsugu Funatsu, Yoko Sakiyama, Daisuke Ogata, Daisuke Izuhara
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Publication number: 20210095386Abstract: The purpose of the present invention is to provide a composite electrolyte membrane which has excellent chemical resistance and can maintain sufficient mechanical strength even under conditions of high humidity and high pressure, which are the operating conditions for electrochemical hydrogen pumps and water electrolyzers. This composite electrolyte membrane, which is for achieving said purpose, has a composite layer obtained by combining a polyelectrolyte with a mesh woven material that satisfies (1) and (2) and comprises liquid crystal polyester fibers or polyphenylene sulfide fibers. (1): Mesh thickness (?m)/fiber diameter (?m)<2.0. (2): Opening (?m)/fiber diameter (?m)>1.0.Type: ApplicationFiled: March 25, 2019Publication date: April 1, 2021Applicant: Toray Industries, Inc.Inventors: Kenta Minamibayashi, Yoshitsugu Funatsu, Yoko Sakiyama, Daisuke Ogata, Daisuke Izuhara
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Patent number: 9190368Abstract: According to embodiments, a semiconductor device includes an insulating substrate, a first electrode plate disposed on the insulating substrate, a second electrode plate disposed on the insulating substrate, a third electrode plate disposed on the insulating substrate, a first semiconductor element disposed on the first electrode plate, a first electrode of the first semiconductor element being electrically connected to the first electrode plate, a second semiconductor element disposed on the second electrode plate, a first electrode of the second semiconductor element being electrically connected to the second electrode plate, a first bonding wire electrically connecting a second electrode of the first semiconductor element to the third electrode plate, and a second bonding wire electrically connecting a second electrode of the second semiconductor element to the third electrode plate.Type: GrantFiled: September 3, 2013Date of Patent: November 17, 2015Assignee: Kabushiki Kaisha ToshibaInventor: Yoko Sakiyama
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Publication number: 20140284617Abstract: According to embodiments, a semiconductor device includes an insulating substrate, a first electrode plate disposed on the insulating substrate, a second electrode plate disposed on the insulating substrate, a third electrode plate disposed on the insulating substrate, a first semiconductor element disposed on the first electrode plate, a first electrode of the first semiconductor element being electrically connected to the first electrode plate, a second semiconductor element disposed on the second electrode plate, a first electrode of the second semiconductor element being electrically connected to the second electrode plate, a first bonding wire electrically connecting a second electrode of the first semiconductor element to the third electrode plate, and a second bonding wire electrically connecting a second electrode of the second semiconductor element to the third electrode plate.Type: ApplicationFiled: September 3, 2013Publication date: September 25, 2014Applicant: Kabushiki Kaisha ToshibaInventor: Yoko SAKIYAMA
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Patent number: 8823053Abstract: The semiconductor device includes a plurality of first flat plates containing a material that absorbs an electromagnetic wave at a high frequency. Any of the first flat plates is disposed above the first connecting wire, and any other of the first flat plates is disposed above the second connecting wire.Type: GrantFiled: February 28, 2013Date of Patent: September 2, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Yoko Sakiyama, Kohei Morizuka
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Publication number: 20140077260Abstract: The semiconductor device includes a plurality of first flat plates containing a material that absorbs an electromagnetic wave at a high frequency. Any of the first flat plates is disposed above the first connecting wire, and any other of the first flat plates is disposed above the second connecting wire.Type: ApplicationFiled: February 28, 2013Publication date: March 20, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yoko SAKIYAMA, Kohei MORIZUKA
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Patent number: 7772641Abstract: A power semiconductor device includes: a semiconductor layer having a trench extending along a first direction in a stripe configuration; a gate electrode buried in the trench for controlling a current flowing in the semiconductor layer; and a gate plug made of a material having higher electrical conductivity than the gate electrode, the gate plug having the stripe configuration and being connected to the gate electrode along the first direction. The semiconductor layer includes: a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type provided partially in an upper face of the first semiconductor layer; a third semiconductor layer of the first conductivity type provided partially on the second semiconductor layer; and a fourth semiconductor layer of the second conductivity type provided on a lower face of the first semiconductor layer.Type: GrantFiled: March 6, 2007Date of Patent: August 10, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Ichiro Omura, Yoko Sakiyama, Hideki Nozaki, Atsushi Murakoshi, Masanobu Tsuchitani, Koichi Sugiyama, Tsuneo Ogura, Masakazu Yamaguchi, Tatsuo Naijo
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Publication number: 20070210350Abstract: A power semiconductor device includes: a semiconductor layer having a trench extending along a first direction in a stripe configuration; a gate electrode buried in the trench for controlling a current flowing in the semiconductor layer; and a gate plug made of a material having higher electrical conductivity than the gate electrode, the gate plug having the stripe configuration and being connected to the gate electrode along the first direction. The semiconductor layer includes: a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type provided partially in an upper face of the first semiconductor layer; a third semiconductor layer of the first conductivity type provided partially on the second semiconductor layer; and a fourth semiconductor layer of the second conductivity type provided on a lower face of the first semiconductor layer.Type: ApplicationFiled: March 6, 2007Publication date: September 13, 2007Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ichiro Omura, Yoko Sakiyama, Hideki Nozaki, Atsushi Murakoshi, Masanobu Tsuchitani, Koichi Sugiyama, Tsuneo Ogura, Masakazu Yamaguchi, Tatsuo Naijo
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Patent number: D503149Type: GrantFiled: November 12, 2003Date of Patent: March 22, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Satoshi Teramae, Yoko Sakiyama