Patents by Inventor Mamoru Kamimura

Mamoru Kamimura 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).

  • Process for producing zirconium oxide sintered body
    Patent number: 4542110
    Abstract: A zirconium oxide sintered body for an oxygen concentration sensor is produced by mixing 87.5 to 91.0% by weight of zirconium oxide powder, 8.5 to 12.3% by weight of yttrium oxide powder, 0.5% by weight or less of silicon oxide and 0.2 to 1.0% by weight of aluminum oxide, drying the resulting mixture, followed by sintering so as to make the cubic phase content in crystal phase of the resulting sintered body at ordinary temperatures 95% by weight or more. Said zirconium oxide sintered body is excellent in mechanical strength, thermal shock and ionic conductivity and can be used stably for a long period of time.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: September 17, 1985
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takao Nakada, Mamoru Kamimura, Toranosuke Ashizawa