Patents by Inventor Hokuto Yamatsugu

Hokuto Yamatsugu 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).

  • Method of producing a crystal sheet, apparatus for use in producing the same, and solar cell
    Patent number: 6596075
    Abstract: A high-quality crystal sheet is provided. An apparatus for use in producing a crystal sheet includes a substrate having a main surface on which a crystal sheet is formed, a crucible holding a melt therein, a movable member holding the substrate to move it to bring its main surface into contact with the melt and then move the substrate away from the melt, and cooling means for cooling the movable member.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: July 22, 2003
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuto Igarashi, Yoshihiro Tsukuda, Hidemi Mitsuyasu, Hokuto Yamatsugu, Tohru Nunoi, Hiroshi Taniguchi, Koji Yoshida
  • Method of producing a crystal sheet, apparatus for use in producing the same, and solar cell
    Publication number: 20010004874
    Abstract: A high-quality crystal sheet is provided. An apparatus for use in producing a crystal sheet includes a substrate having a main surface on which a crystal sheet is formed, a crucible holding a melt therein, a movable member holding the substrate to move it to bring its main surface into contact with the melt and then move the substrate away from the melt, and cooling means for cooling the movable member.
    Type: Application
    Filed: December 26, 2000
    Publication date: June 28, 2001
    Inventors: Kazuto Igarashi, Yoshihiro Tsukuda, Hidemi Mitsuyasu, Hokuto Yamatsugu, Tohru Nunoi, Hiroshi Taniguchi, Koji Yoshida