Patents by Inventor Yoshishige Sekiguchi

Yoshishige Sekiguchi 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).

  • Graphite electrode having joints
    Patent number: 5870424
    Abstract: In order to prevent the rupturing of a graphite electrode comprising electrode sections joined with one another by a socket and a nipple, electrical insulating material is applied on the joined surfaces to decrease the current across the nipple.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: February 9, 1999
    Assignee: Showa Denko Kabushikikaisha
    Inventors: Masao Todoriki, Takayuki Fukai, Yoshishige Sekiguchi, Osamu Kanazawa, Hiroyuki Yamashita
  • Joined carbon electrodes and method for the joining thereof
    Patent number: 4703492
    Abstract: The present invention relates to joined carbon electrodes, each of which has a mark formed on such a part of the circumferential surface of each of the first and second carbon electrodes that upon the coinciding of the marks with one another the ends of the screws essentially coincide with one another.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: October 27, 1987
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Yoshishige Sekiguchi, Tomiyasu Kubota