Patents by Inventor Kazuo Koshizuka

Kazuo Koshizuka 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).

  • Fuel Injection Valve
    Publication number: 20070278750
    Abstract: In a fuel injection valve (1) having a nozzle body (31) with a nozzle hole (35) at its tip that is opened and closed by a nozzle needle (32) housed in the nozzle body (31), the area of contact between the nozzle needle (32) and a seat (31A) on the nozzle body (31) is provided with a coating layer (Y) to reduce the frictional resistance with the nozzle body (31). When the nozzle needle (32) seats on the seat (31A), between the time from when the tip of the nozzle needle (32) contacts the seat (31A) to when it is pressed against the seat (31A), the nozzle needle (32) slides on the surface of the nozzle body (31) with low frictional resistance. As a result, wear on the seat (31A) when the nozzle needle (32) is seated to open the valve can be kept down.
    Type: Application
    Filed: January 14, 2005
    Publication date: December 6, 2007
    Inventors: Shinji Okuhara, Toru Horie, Kiyoshi Matsuzaki, Kenichi Neki, Kazuo Koshizuka
  • Process for producing norcamphane dicarbonitriles
    Patent number: 5169971
    Abstract: The present invention relates to the production of a norcamphane dicarbonitrile and is directed to solving the problems of low conversion from the starting material, low selectivity and uneconomical production.According to the present invention, a norcamphane dicarbonitrile is produced by hydrocyanation of bicyclo [2,2,1]-5-heptene-2-carbonitrile in the presence of a zero-valent nickel complex catalyst and a Lewis acid.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: December 8, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masamitu Inomata, Naokazu Shiotani, Kazuo Koshizuka, Minato Karasawa
  • Process for producing norcamphane dicarbonitriles
    Patent number: 5087722
    Abstract: A norcamphane dicarbonitrile is produced by hydrocyanation of bicyclo [2,2,1]-5-heptene-2-carbonitrile in the presence of a zerovalent nickel complex catalyst and Lewis acid and treating the resulting crude product by contact with a catalyst treating agent.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: February 11, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masamitu Inomata, Naokazu Shiotani, Kazuo Koshizuka, Minato Karasawa