Patents by Inventor Arihisa Tanaka

Arihisa Tanaka 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).

  • Face grinder
    Patent number: 4726150
    Abstract: A face grinder capable of grinding the end surface of a workpiece without leaving any unground protruding portion at the center thereof by imparting rotation on its own axis and around a chuck holder or eccentric rotation to either a chuck for holding the workpiece or a cup-shaped grinding wheel by a planetary gear mechanism.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: February 23, 1988
    Assignees: Asahi Diamond Industrial Co., Ltd., Nissei Industrial Co., Ltd.
    Inventors: Kiyoshi Nishio, Arihisa Tanaka