Patents by Inventor Hideyasu Kawanami

Hideyasu Kawanami 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).

  • Tuyeres for a blast furnace
    Patent number: 4043542
    Abstract: Tuyeres for a blast furnace are disclosed wherein a coating is formed on the inner and outer peripherential surfaces of the tuyere body by subjecting the surfaces to a calorizing treatment to diffuse a diffusion agent comprising a powdery mixture of alumina and aluminum at a treating temperature of about 800.degree. C. The tuyere body is shaped so as to form an inner jacket, and the walls of the tuyere body forming the inner jacket may also be subjected to a calorizing treatment.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: August 23, 1977
    Assignee: Sumitomo Metal Industries Limited
    Inventors: Hiroshi Yamaoka, Morio Kawasaki, Hideyasu Kawanami, Toshihiro Shiino, Junichi Yamashita