Patents by Inventor Masato Inayoshi

Masato Inayoshi 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).

  • Motor assembly having ion implantation on sliding surfaces
    Patent number: 5927861
    Abstract: A motor bearing device includes a bearing member, and a rotary shaft made of steel into which ions of metal element and carbon ions are implanted via a surface of the rotary shaft. The rotary shaft is slidable relative to the bearing member. The metal element is selected from the group consisting of metal elements in the IVa, Va, and VIa groups of the periodic system. Lubricant is provided between the bearing member and the rotary shaft. The surface of the rotary shaft opposes the bearing member.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: July 27, 1999
    Assignees: Matsushita Electric Industrial Co., Ltd., Nippon Steel Corporation
    Inventors: Fumitoshi Yamashita, Katsuhiro Murano, Seiji Kurozumi, Kazunori Hayashi, Kanao Fukuda, Masato Inayoshi