Patents by Inventor Tsutomu Minegishi

Tsutomu Minegishi 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).

  • Photocatalyst electrode for oxygen generation and module
    Patent number: 10914013
    Abstract: Provided are a photocatalyst electrode for oxygen generation exhibiting a satisfactory onset potential, and a module including this photocatalyst electrode. The photocatalyst electrode for oxygen generation includes a current collector layer; a photocatalyst on the current collector layer; and a promoter supported on at least a portion of the photocatalyst, in which the promoter contains a first metal oxide having an oxygen generation overvoltage of 0.4 V or lower, and a second metal oxide having an oxygen generation overvoltage of higher than 0.4 V.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: February 9, 2021
    Assignees: FUJIFILM Corporation, JAPAN TECHNOLOGICAL RESEARCH ASSOCIATION OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS, THE UNIVERSITY OF TOKYO
    Inventors: Kazunari Domen, Tsutomu Minegishi, Atsushi Ohnishi, Koichiro Ueda, Chisato Katayama, Hiroyuki Kobayashi
  • Electrode for water-splitting reaction and method for producing the same
    Patent number: 10406516
    Abstract: The present invention provides an electrode for water-splitting reaction that is capable of increasing conductive path between a photocatalyst layer and a current collecting layer without inhibiting light absorption by photocatalyst, which comprises: a photocatalyst layer 10; a current collecting layer 30; and a contact layer 20 that contains semiconductor or good conductor and is provided between the photocatalyst layer 10 and the current collecting layer 30, wherein the contact layer 20 is provided along the surface shape of the photocatalyst layer 10 at the current collecting layer 30 side of the photocatalyst layer 10.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: September 10, 2019
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Tsutomu Minegishi, Kazunari Domen, Jun Kubota
  • Method for producing photocatalyst electrode for water decomposition
    Patent number: 10337112
    Abstract: Provided is a method for producing a photocatalyst electrode for water decomposition that exhibits excellent detachability between the substrate and the photocatalyst layer and exhibits high photocurrent density. The method for producing a photocatalyst electrode for water decomposition of the invention includes: a metal layer forming step of forming a metal layer on one surface of a first substrate by a vapor phase film-forming method or a liquid phase film-forming method; a photocatalyst layer forming step of forming a photocatalyst layer by subjecting the metal layer to at least one treatment selected from an oxidation treatment, a nitriding treatment, a sulfurization treatment, or a selenization treatment; a current collecting layer forming step of forming a current collecting layer on a surface of the photocatalyst layer, the surface being on the opposite side of the first substrate; and a detachment step of detaching the first substrate from the photocatalyst layer.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 2, 2019
    Assignees: FUJIFILM Corporation, THE UNIVERSITY OF TOKYO, JAPAN TECHNOLOGICAL RESEARCH ASSOCIATION OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS
    Inventors: Kazunari Domen, Takashi Hisatomi, Tsutomu Minegishi, Chizhong Wang, Chisato Katayama
  • PHOTOCATALYST ELECTRODE FOR OXYGEN GENERATION AND MODULE
    Publication number: 20180195187
    Abstract: Provided are a photocatalyst electrode for oxygen generation exhibiting a satisfactory onset potential, and a module including this photocatalyst electrode. The photocatalyst electrode for oxygen generation includes a current collector layer; a photocatalyst on the current collector layer; and a promoter supported on at least a portion of the photocatalyst, in which the promoter contains a first metal oxide having an oxygen generation overvoltage of 0.4 V or lower, and a second metal oxide having an oxygen generation overvoltage of higher than 0.4 V.
    Type: Application
    Filed: March 7, 2018
    Publication date: July 12, 2018
    Applicants: FUJIFILM Corporation, Japan Technological Research Association of Artificial Photosynthetic Chemical Process, THE UNIVERSITY OF TOKYO
    Inventors: Kazunari DOMEN, Tsutomu MINEGISHI, Atsushi OHNISHI, Koichiro UEDA, Chisato KATAYAMA, Hiroyuki KOBAYASHI
  • Photocatalyst for water splitting comprising gallium selenide and photoelectrode for water splitting comprising the same
    Patent number: 9975115
    Abstract: Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag—Ga selenide, or both thereof.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: May 22, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Haruyuki Nakanishi, Tsutomu Minegishi, Kazunari Domen, Jun Kubota, Chika Miwada
  • METHOD FOR PRODUCING PHOTOCATALYST ELECTRODE FOR WATER DECOMPOSITION
    Publication number: 20170362721
    Abstract: Provided is a method for producing a photocatalyst electrode for water decomposition that exhibits excellent detachability between the substrate and the photocatalyst layer and exhibits high photocurrent density. The method for producing a photocatalyst electrode for water decomposition of the invention includes: a metal layer forming step of forming a metal layer on one surface of a first substrate by a vapor phase film-forming method or a liquid phase film-forming method; a photocatalyst layer forming step of forming a photocatalyst layer by subjecting the metal layer to at least one treatment selected from an oxidation treatment, a nitriding treatment, a sulfurization treatment, or a selenization treatment; a current collecting layer forming step of forming a current collecting layer on a surface of the photocatalyst layer, the surface being on the opposite side of the first substrate; and a detachment step of detaching the first substrate from the photocatalyst layer.
    Type: Application
    Filed: August 31, 2017
    Publication date: December 21, 2017
    Applicants: FUJIFILM Corporation, THE UNIVERSITY OF TOKYO, Japan Technological Research Association of Artificial Photosynthetic Chemical Process
    Inventors: Kazunari DOMEN, Takashi HISATOMI, Tsutomu MINEGISHI, Chizhong WANG, Chisato KATAYAMA
  • PHOTOCATALYST FOR WATER SPLITTING COMPRISING GALLIUM SELENIDE AND PHOTOELECTRODE FOR WATER SPLITTING COMPRISING THE SAME
    Publication number: 20150196901
    Abstract: Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag—Ga selenide, or both thereof.
    Type: Application
    Filed: March 6, 2015
    Publication date: July 16, 2015
    Applicants: THE UNIVERSITY OF TOKYO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Haruyuki NAKANISHI, Tsutomu MINEGISHI, Kazunari DOMEN, Jun KUBOTA, Chika MIWADA
  • ELECTRODE FOR WATER-SPLITTING REACTION AND METHOD FOR PRODUCING THE SAME
    Publication number: 20140374270
    Abstract: The present invention provides an electrode for water-splitting reaction that is capable of increasing conductive path between a photocatalyst layer and a current collecting layer without inhibiting light absorption by photocatalyst, which comprises: a photocatalyst layer 10; a current collecting layer 30; and a contact layer 20 that contains semiconductor or good conductor and is provided between the photocatalyst layer 10 and the current collecting layer 30, wherein the contact layer 20 is provided along the surface shape of the photocatalyst layer 10 at the current collecting layer 30 side of the photocatalyst layer 10.
    Type: Application
    Filed: September 8, 2014
    Publication date: December 25, 2014
    Applicant: The University of Tokyo
    Inventors: Tsutomu MINEGISHI, Kazunari DOMEN, Jun KUBOTA
  • PHOTOCATALYST FOR WATER SPLITTING COMPRISING GALLIUM SELENIDE AND PHOTOELECTRODE FOR WATER SPLITTING COMPRISING THE SAME
    Publication number: 20140001036
    Abstract: Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag—Ga selenide, or both thereof.
    Type: Application
    Filed: February 20, 2012
    Publication date: January 2, 2014
    Inventors: Haruyuki Nakanishi, Tsutomu Minegishi, Kazunari Domen, Jun Kubota, Chika Miwada