Patents by Inventor Yoshimi Kawazu

Yoshimi Kawazu 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).

  • Direct current arc furnace
    Patent number: 5479433
    Abstract: A DC arc furnace according to the invention has a bottom electrode, which comprises a plurality of contact pins each having an end to be brought into contact with an object and to supply arc-forming current thereto, a current base electrically connected to the other end of each of the contact pins for distributing current from a power supply to the contact pins, and a cooling device for cooling the current base with the use of cooling water.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: December 26, 1995
    Assignees: NKK Corporation, Tokyo Steel M.F.G. Co., Ltd.
    Inventors: Toshimichi Maki, Hiroyuki Yamashita, Yoshimi Kawazu, Hidefumi Nakashima