Patents by Inventor Isao Kameda

Isao Kameda 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).

  • Electrically conductive zirconia-based sintered body and process for the production thereof
    Patent number: 5068072
    Abstract: The present invention relates to a zirconia-based sintered body comprising TiN, TiO.sub.2 and ZrO.sub.2 and having electric conductivity and a process for the production thereof. The present invention provides a zirconia-based sintered body which has, at normal temperature, a mechanical strength of not less than 50 kg/mm.sup.2, a fracture toughness of not less than 4 MPam.sup.1/2, a Vickers hardness of not less than 1,000 kg/mm.sup.2 and a volume resistivity of not more than 1 .OMEGA.cm, and which is sinterable under normal pressure at low temperature, and a process for the production thereof.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: November 26, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuo Horinouchi, Masahide Mouri, Isao Kameda