Patents by Inventor Kinya Atumi

Kinya Atumi 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 ceramic electric heater with improved thermal shock resistance
    Patent number: 4633064
    Abstract: A sintered ceramic heater, particularly a heater for a glow plug of a diesel engine, includes a sintered ceramic heater, which generates heat upon receiving an electric current, supported by an electrically insulating sintered ceramic body. The heater element includes a U-shaped cross-section outer portion integrally sintered with and covering a central portion. Each portion is formed of a sintered ceramic body of a mixture of electrically conductive ceramic powder having an average diameter of not more than 2 .mu.m and selected from the group consisting of MoSi.sub.2, WSi.sub.2, TiB.sub.2 and TiC, and 35-75 mol % of electrically insulating ceramic powder, e.g., Si.sub.3 N.sub.4. The central and outer portions have the same composition.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: December 30, 1986
    Assignees: Nippondenso Co., Ltd., Nippon Soken, Inc.
    Inventors: Morihiro Atsumi, Hitoshi Yoshida, Novuei Ito, Kinya Atumi