Patents by Inventor Akira Sugafuji

Akira Sugafuji 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).

  • Sintered self-lubricating article
    Patent number: 4000981
    Abstract: A sintered self-lubricating article having great oxidation resistance, high dimension-stability and high wear resistance at elevated temperatures without assistance of any other lubricants and consisting essentially of 5 to 10% by weight of tin, 8 to 40% by weight of zinc, 5 to 15% by weight of graphite and the balance being copper.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: January 4, 1977
    Assignee: Oiles Industry Co., Ltd.
    Inventors: Akira Sugafuji, Hiroshi Kurimoto, Tadaaki Takase