Patents by Inventor Shigehiro Yamaguchi

Shigehiro Yamaguchi 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).

  • Two-phase stainless steel
    Patent number: 4141762
    Abstract: A two-phase stainless steel containing 10 - 75% ferrite and an effective sulfur content controlled to 0.003% by weight or lower and an effective phosphorous content controlled to 0.01% by weight or lower.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: February 27, 1979
    Assignee: Nippon Steel Corporation
    Inventors: Shigehiro Yamaguchi, Hisashi Kobayashi