Patents by Inventor Tooru Shimamori

Tooru Shimamori 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 high density silicon oxnitride and method for making the same
    Patent number: 4975394
    Abstract: A sintered silicon oxynitride composition comprises as an amount of starting material the combination of (a) a silicon component comprising silicon nitride(Si.sub.3 N.sub.4) and silicon oxide(SiO.sub.2) in a mol ratio of SiO.sub.2 /Si.sub.3 N.sub.4 being 0.7 to 1.2, and (b) at least one second component selected from an aluminum oxide, an aluminum nitride, a rare earth oxide, and a rare earth nitride, said second component being in an amount of from about 0.1 to 10 mol per 100 mol of said silicon component.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: December 4, 1990
    Assignees: NGK Spark Plug Co., Ltd., Kozo Iizuka, Director-General of Agency of Industrial Science and Technology
    Inventors: Shuzo Kanzaki, Masayoshi Ohashi, Hideyo Tabata, Osami Abe, Tooru Shimamori, Koichi Moori