Patents by Inventor Nobuji Takahashi

Nobuji Takahashi 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).

  • Method of manufacturing a composition for use in injection molding powder metallurgy
    Patent number: 5095048
    Abstract: A composition for use in injection molding powder metallurgy, is provided by applying mechanical sphericalization to a metal powder of an irregular shape and having an average grain size of not more than 50 .mu.m to form a sphericalized metal powder, and then mixing and kneading a binder of not more than 9 parts by volume relative to 11 parts by volume of the sphericalized metal powder.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: March 10, 1992
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Nobuji Takahashi, Kouhei Kibayashi