Patents by Inventor Yasushi Kobuchi

Yasushi Kobuchi 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).

  • Separator comprising a metal sheet and a resin
    Patent number: 8252475
    Abstract: Moreover, as a case of not using the press work, in a separator of a polymer electrolyte fuel cell described in a Japanese Unexamined Patent Publication JP-A 2001-76748, a gas channel is formed by printing an electrically conductive material onto an electrically conductive base material. To be specific, as the electrically conductive base material is used a molded plate formed of carbon powder and a thermosetting resin as main components, and as the electrically conductive material is used carbon paste containing carbon powder as a main component.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: August 28, 2012
    Assignee: Nitta Corporation
    Inventors: Yasushi Kobuchi, Ikuzo Usami
  • Fuel cell separator that is excellent in workability and corrosion resistance
    Patent number: 8034505
    Abstract: A separator that is excellent in workability and corrosion resistance, and allows a reduction in the number of constituent components of a fuel cell and the number of manufacturing process steps, and a manufacturing method therefore are provided. A separator includes a separating section for achieving separation between a hydrogen gas channel and an oxygen gas channel, and a sealing section disposed along an outer periphery of the separator, for preventing leakage of hydrogen and oxygen gases. The separating section and the sealing section are formed integrally with each other by means of plastic deformation processing, e.g., press working, of a metal thin sheet.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 11, 2011
    Assignee: Nitta Corporation
    Inventors: Yasushi Kobuchi, Ikuzo Usami, Toshiaki Kasazaki, Tomohiro Nishio
  • Separator
    Publication number: 20080026279
    Abstract: A separator that is excellent in workability and corrosion resistance, and allows a reduction in the number of constituent components of a fuel cell and the number of manufacturing process steps, and a manufacturing method therefore are provided. A separator includes a separating section for achieving separation between a hydrogen gas channel and an oxygen gas channel, and a sealing section disposed along an outer periphery of the separator, for preventing leakage of hydrogen and oxygen gases. The separating section and the sealing section are formed integrally with each other by means of plastic deformation processing, e.g., press working, of a metal thin sheet.
    Type: Application
    Filed: November 8, 2004
    Publication date: January 31, 2008
    Inventors: Yasushi Kobuchi, Ikuzo Usami, Toshiaki Kasazaki, Tomohiro Nishio
  • Seperator
    Publication number: 20070212589
    Abstract: Moreover, as a case of not using the press work, in a separator of a polymer electrolyte fuel cell described in a Japanese Unexamined Patent Publication JP-A 2001-76748, a gas channel is formed by printing an electrically conductive material onto an electrically conductive base material. To be specific, as the electrically conductive base material is used a molded plate formed of carbon powder and a thermosetting resin as main components, and as the electrically conductive material is used carbon paste containing carbon powder as a main component.
    Type: Application
    Filed: December 6, 2004
    Publication date: September 13, 2007
    Inventors: Yasushi Kobuchi, Ikuzo Usami