Patents by Inventor Takeshi Okujo

Takeshi Okujo 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).

  • Anti-wear sintered alloy and manufacturing process thereof
    Patent number: 4491477
    Abstract: An anti-wear sintered alloy comprising from 2.5 to 25.0% of Cr, from 0.10 to 3.0% of Mn, from 0.1 to 0.8% of P, from 1.0 to 5.0% of Cu, from 0.5 to 2.0% of Si, from 0 to 3% of Mo, 1.5 to 3.5% of C, one selected from the group consisting of from 0.5 to 3.0% of S and from 1.0 to 5.0% of Pb, and the balance being Fe with less than 2% of impurities, wherein S or Pb is distributed uniformly in the sintered alloy in form of sulfide or lead particle of less than 100 .mu.m and a manufacturing process thereof.
    Type: Grant
    Filed: August 24, 1982
    Date of Patent: January 1, 1985
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Suganuma, Koji Kazuoka, Shuichi Fujita, Yoshitaka Takahashi, Takeshi Okujo