Patents by Inventor Myuki Nakamura

Myuki Nakamura 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).

  • Silicon nitride powder, silicon nitride sintered body and processes for their production
    Patent number: 5126295
    Abstract: A silicon nitride powder prepared by nitriding a metallic silicon powder and having the following physical characteristics (1) to (3):(1) the oxygen content in the form of a solid solution is at most 0.5% by weight,(2) the specific surface area is from 6 to 16 m.sup.2 /g, and(3) the content of fine powder of at most 0.2 .mu.m is at most 7% by volume.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: June 30, 1992
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Koichi Uchino, Yukihiko Nakajima, Myuki Nakamura, Hideki Hirotsuru