Patents by Inventor Toyohisa Tokumaru

Toyohisa Tokumaru 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).

  • Apparatus for reforming rollers for shaping rolled steel
    Patent number: 5826455
    Abstract: A mechanism for simply changing the roller width of a roller straightener for straightening the warp of rolled sections, having two or more straightening rolls and a mechanism for permitting at least one straightening roll to move in a direction parallel with a spindle using the rotational force of the spindle as a drive force.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: October 27, 1998
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazuo Ohmori, Masayuki Okada, Toyohisa Tokumaru, Toru Takeuchi, Sumihiko Itoh