Patents by Inventor Syunzo Tashima

Syunzo Tashima 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).

  • Biomedical article made of alumina ceramics
    Patent number: 6241773
    Abstract: A biomedical article made of alumina ceramics including an aluminum oxide having a purity of not less than 99.95% and unavoidable impurities as remainder. The alumina ceramics contains no sintering agent. The alumina ceramics has no irregularities in the crystal grain size, and has a strength necessary for biomedical article, and have a crystal grain size of less than 1.0 &mgr;m to assure excellent slidability.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: June 5, 2001
    Assignees: Kyocera Corporation
    Inventors: Syunzo Tashima, Toshihiko Shimotoso, Yoshio Taniguchi