Patents by Inventor Katsuhiro Imanaga

Katsuhiro Imanaga 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).

  • Transfer type plasma heating anode
    Patent number: 6649860
    Abstract: A transferred plasma heating anode for heating a molten metal in a container by applying Ar plasma generated by passing a direct current through the molten metal, the transferred plasma heating anode comprising; an anode, composed of a conductive metal, that has an internal cooling structure, a metal protector having an internal cooling structure that is placed outside the anode with a constant gap between the anode and the protector, and a gas supply means that supplies an Ar-containing gas to the gap, is characterized by the central portion on the external surface of the anode tip end being inwardly recessed.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: November 18, 2003
    Assignee: Nippon Steel Corporation
    Inventors: Takeshi Kawachi, Kazuto Yamamura, Hiroyuki Mitake, Junichi Kinoshita, Katsuhiro Imanaga, Masahiro Doki, Yoshiaki Kimura, Teruo Kawabata
  • Transfer-type plasma heating anode
    Publication number: 20020134766
    Abstract: A transferred plasma heating anode for heating a molten metal in a container by applying Ar plasma generated by passing a direct current through the molten metal, the transferred plasma heating anode comprising; an anode, composed of a conductive metal, that has an internal cooling structure, a metal protector having an internal cooling structure that is placed outside the anode with a constant gap between the anode and the protector, and a gas supply means that supplies an Ar-containing gas to the gap, is characterized by the central portion on the external surface of the anode tip end being inwardly recessed.
    Type: Application
    Filed: August 10, 2001
    Publication date: September 26, 2002
    Inventors: Takeshi Kawachi, Kazuto Yamamura, Hiroyuki Mitake, Junichi Kinoshita, Katsuhiro Imanaga, Masahiro Doki, Yoshiaki Kimura, Teruo Kawabata