Patents by Inventor Kenichiro Miyamoto

Kenichiro Miyamoto 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).

  • Vacuum refining method for molten steel
    Patent number: 5902374
    Abstract: The present invention relates to a molten steel refining method for refining molten steel, the carbon content of which is not more than 0.1 weight %, by blowing oxygen gas for decarburization at a blowing speed so that a cavity, the depth of which is 150 to 400 mm, can be formed on the surface of molten steel in a straight barrel type vacuum refining apparatus in which a straight barrel type vacuum vessel having no vessel bottom and a ladle are arranged.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: May 11, 1999
    Assignee: Nippon Steel Corporation
    Inventors: Shinya Kitamura, Kimitoshi Yonezawa, Kenichiro Miyamoto, Shinji Sasakawa, Kunihiko Fujiwara