Patents by Inventor Ichiro Kohshi

Ichiro Kohshi 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
  • Boron-containing, silicon nitride-based ceramic shaped body
    Patent number: 5128286
    Abstract: A shaped body is disclosed which comprises substantially amorphous, silicon nitride-based ceramic containing Si, N and B as essential components and O, C and H as optional components in amounts providing the following atomic ratios:N/Si: 0.05 to 2.5,B/Si: 0.01-3,O/Si: 2.0 or less,C/Si: 1.5 or less, andH/Si: 0.1 or less.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: July 7, 1992
    Assignee: Tonen Corporation
    Inventors: Osamu Funayama, Mikiro Arai, Hiroyuki Aoki, Yuuji Tashiro, Toshio Katahata, Kiyoshi Sato, Takeshi Isoda, Tadashi Suzuki, Ichiro Kohshi