Patents by Inventor Soichi Hitomi

Soichi Hitomi 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).

  • Process for producing oxide-dispersion strengthened platinum material
    Patent number: 6841121
    Abstract: This invention aims to provide a process for producing an oxide-dispersion strengthened platinum material which allows zirconium oxide to be more finely dispersed in a platinum material, and to further improve creep strength in an oxide-dispersion strengthened platinum material.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 11, 2005
    Assignee: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Toru Shoji, Soichi Hitomi, Yoshikazu Takagi, Yoshinobu Watanabe
  • Platinum material reinforced by oxide-dispersion and process for producing the same
    Patent number: 6511523
    Abstract: The present invention is aimed at providing a platinum material in which creep strength is elevated by improving a metal grain shape in an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed, and providing a process for producing the platinum material. The present invention provides an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed in platinum and which can be obtained through rolling and thermal recrystallization, in which platinum grains constituting the platinum material have an average grain size in a rolling direction in the range of 200 to 1500 &mgr;m and an average grain aspect ratio of 20 or more.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 28, 2003
    Assignee: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Toru Shoji, Soichi Hitomi, Yoshikazu Takagi, Yoshinobu Watanabe
  • Method for producing platinum material reinforced with dospersed oxide
    Publication number: 20020136660
    Abstract: This invention aims to provide a process for producing an oxide-dispersion strengthened platinum material which allows zirconium oxide to be more finely dispersed in a platinum material, and to further improve creep strength in an oxide-dispersion strengthened platinum material.
    Type: Application
    Filed: December 31, 2001
    Publication date: September 26, 2002
    Inventors: Toru Shoji, Soichi Hitomi, Yoshikazu Takagi, Yoshinobu Watanabe
  • Platinum material reinforced by oxide dispersion and process for producing the same
    Publication number: 20020112563
    Abstract: The present invention is aimed at providing a platinum material in which creep strength is elevated by improving a metal grain shape in an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed, and providing a process for producing the platinum material.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 22, 2002
    Inventors: Toru Shoji, Soichi Hitomi, Yoshikazu Takagi, Yoshinobu Watanabe