Patents Assigned to Ohgasu Co., Ltd.
  • Patent number: 5334565
    Abstract: Disclosed is a method for producing long silicon nitride whiskers. The production method encompasses reacting diatomaceous earth on a carbon boat in a gas flow composed of a reducing agent and a nitriding agent at a temperature of 1,, C.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: August 2, 1994
    Assignees: Nakama Syokai Company, Tokai Kogyo Company, Yusaku Takita, Ohita Gas Co., Ltd., Ohgasu Co., Ltd.
    Inventors: Yusaku Takita, Tatsumi Ishihara, Yukako Mizuhara, Masao Noguchi