Patents by Inventor Nobuhisa Tabata

Nobuhisa Tabata 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).

  • Carbon steel for machine structural use
    Patent number: 4975242
    Abstract: A carbon steel useful for machine structural use having improved cold forgability and induction hardenability comprises particular amounts of C, Si, Mn, Cr, S, P, O, N or further Mo and the balance being substantially Fe.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: December 4, 1990
    Assignees: Honda Gikan Kogyo Kabushiki Kaisha, Kawasaki Steel Corp.
    Inventors: Toshiyuki Hoshino, Nobuhisa Tabata, Isao Machida, Masayoshi Saga, Takeshi Takagi