Patents by Inventor Tamio Ishiyama

Tamio Ishiyama 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).

  • Molded articles formed of silicon nitride based ceramic and process for producing same
    Patent number: 5145812
    Abstract: A molded body formed of a silicon nitride-based ceramic containing Si and N and optionally O, C and/or a metal. The ceramic is formed from a polysilazane. A molded body may be a composite body which is composed of a matrix of the ceramic and a reinforcing material such as powder or fiber embedded within the matrix or which is composed of ceramic powder bound with a binder formed of the silicon nitride-based ceramic.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: September 8, 1992
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Mikiro Arai, Osamu Funayama, Hayato Nishii, Tamio Ishiyama, Hiroshi Kaya, Takeshi Isoda, Kouichi Yasuda, Atsuro Takazawa, Tadashi Suzuki, Ichiro Kohshi, Masaaki Ichiyama, Tomohiro Kato