Patents by Inventor Youichi Nimura

Youichi Nimura 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).

  • Gas blowing nozzle, and production and usage thereof
    Patent number: 4438907
    Abstract: A gas blowing nozzle is produced by molding a non-porous substance into a molding frame under pressure and at the same time positioning a plurality of gas passageways forming members at predetermined spaces and distances from each other. The passageway holes have cross sectional shapes as desired, so that the gas blowing may be accurately controlled to perform refining of molten metal.
    Type: Grant
    Filed: June 2, 1982
    Date of Patent: March 27, 1984
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Narito Kimura, Kiyomi Taguchi, Masayuki Hammyo, Osamu Terada, Teruyuki Hasegawa, Youichi Nimura, Noriyuki Hiraga