Patents by Inventor Yoshirou Tomioka

Yoshirou Tomioka 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 of Producing high-formability steel plate with a great potential for strength enhancement by high-density energy
    Patent number: 5529646
    Abstract: Disclosed are alloying elements and microstructures suited for realizing a marked increase in strength of low-carbon or ultra-low-carbon steel plate using a high-density energy source such as a laser. Steel blanks satisfying both high formability and high strength requirements are provided which show sufficient press formability and yet can be markedly increased in strength by laser treatment or which have been markedly increased in strength by laser treatment in areas not to be subjected to severe forming.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: June 25, 1996
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Hiroki Nakajima, Yoshirou Tomioka, Yutaka Suzuki, Shinichirou Nakamura, Kouichi Makii, Tetsuo Soshiroda, Tomohiro Kase, Yoshinobu Omiya, Yoshiki Tanaka
  • Aluminum plate excellent in formability
    Patent number: 5389452
    Abstract: The object of the present invention is to provide an aluminum plate for fabrication which has an excellent formability, easy degrease after fabrication, coating properties, and less tendency of flawing, in which the aluminum plate for fabrication which is plated, and coated with a lubricant containing (A) a fatty acid ester of polyol, (B) an alkaline or alkaline metal salt of sulfonate, and (C) a controlling agent, and having saponification value of 20 or more.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: February 14, 1995
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Hiroki Nakajima, Kimikazu Ikemoto, Yoshirou Tomioka, Yutaka Suzuki, Shinichiro Nakamura, Masaru Adachi, Yuzo Kawakami, Kuniaki Matsui, Tsuneharu Mori