Patents by Inventor Shigeru HagiHara

Shigeru HagiHara 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).

  • Patent number: 7744965
    Abstract: The present invention provides a method and apparatus for forming a zinc oxide thin film with high transparency and high conductivity on a surface of a flexible substrate such as plastic without the indispensable requirement of doping impurities. In the method of forming a zinc oxide thin film by reacting oxygen radicals and zinc atoms on a surface of a substrate placed in a film-forming chamber evacuated to a vacuum, the density of crystal defects that are defects of the atomic arrangement of the zinc oxide thin film is controlled by the temperature of the substrate, and the zinc oxide thin film is thereby formed. It is suitable to form the film while maintaining the temperature of the substrate at 400° C. or less to intentionally disturb the regularity of the atomic arrangement of the zinc oxide thin film.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: June 29, 2010
    Assignees: Yamanashi University, Yamanashi Prefecture, Nakaya Ltd.
    Inventors: Takashi Matsumoto, Chitake Imazu, Shigeru Hagihara, Kazuhiro Kijima, Osamu Abe, Satoshi Hiraki, Yuichiro Fujikawa
  • Publication number: 20070042216
    Abstract: The present invention provides a method and apparatus for forming a zinc oxide thin film with high transparency and high conductivity on a surface of a flexible substrate such as plastic without the indispensable requirement of doping impurities. In the method of forming a zinc oxide thin film by reacting oxygen radicals and zinc atoms on a surface of a substrate placed in a film-forming chamber evacuated to a vacuum, the density of crystal defects that are defects of the atomic arrangement of the zinc oxide thin film is controlled by the temperature of the substrate, and the zinc oxide thin film is thereby formed. It is suitable to form the film while maintaining the temperature of the substrate at 400° C. or less to intentionally disturb the regularity of the atomic arrangement of the zinc oxide thin film.
    Type: Application
    Filed: March 17, 2006
    Publication date: February 22, 2007
    Applicants: Yamanashi University, YAMANASHI PREFECTURE, NAKAYA ltd.
    Inventors: Takashi Matsumoto, Chitake Imazu, Shigeru Hagihara, Kazuhiro Kijima, Osamu Abe, Satoshi Hiraki, Yuichiro Fujikawa
  • Patent number: 6821473
    Abstract: A three-dimensional laminated product forming apparatus and method for forming a three-dimensional laminated product from a photo-curable liquid by progressively superposing solid laminae one on top of another by photo-curing a surface layer of the photo-curable liquid and converting it to a solid lamina. A product table is provided on which a three-dimensional solid product is built up in progressive steps and which is incrementally advanced into the photo-curable liquid by a specified depth each step. A liquid surface leveling device works as a capillary to draw up a photo-curable liquid by capillary action while it is in contact with the surface of the photo-curable liquid contained in the container.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: November 23, 2004
    Inventors: Koki Hiizumi, Shigeru HagiHara
  • Publication number: 20020084038
    Abstract: A three-dimensional laminated product forming apparatus and method for forming a three-dimensional laminated product from a photo-curable liquid by progressively superposing solid laminae one on top of another by photo-curing a surface layer of the photo-curable liquid and converting it to a solid lamina. A product table is provided on which a three-dimensional solid product is built up in progressive steps and which is incrementally advanced into the photo-curable liquid by a specified depth each step. A liquid surface leveling device works as a capillary to draw up a photo-curable liquid by capillary action while it is in contact with the surface of the photo-curable liquid contained in the container.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 4, 2002
    Inventors: Koki Hiizumi, Shigeru HagiHara
  • Publication number: 20010042942
    Abstract: A three-dimensional laminated product forming apparatus and method for forming a three-dimensional laminated product from a photo-curable liquid by progressively superposing solid laminae one on top of another by photo-curing a surface layer of the photo-curable liquid and converting it to a solid lamina. A product table is provided on which a three-dimensional solid product is built up in progressive steps and which is incrementally advanced into the photo-curable liquid by a specified depth each step. A liquid surface leveling device works as a capillary to draw up a photo-curable liquid by capillary action while it is in contact with the surface of the photo-curable liquid contained in the container.
    Type: Application
    Filed: November 24, 1999
    Publication date: November 22, 2001
    Inventors: Koki Hizumi, SHIGERU HAGIHARA