Patents by Inventor Ichiro Yasumura

Ichiro Yasumura 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).

  • Method of manufacturing electric welded pipes under hot conditions
    Patent number: 5005395
    Abstract: A method of producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by employing a forming roll arrangement of the constant pass-line type in combination with the downward bending system.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: April 9, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ichiro Yasumura, Kuniharu Fujimoto
  • Apparatus for manufacturing electric welded pipes under hot conditions
    Patent number: 4945743
    Abstract: An apparatus for producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by a forming roll arrangement of the constant pass-line type in combination with the downward bending system.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 7, 1990
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ichiro Yasumura, Kuniharu Fujimoto
  • Method and apparatus for cutting off the beads of seam-welded pipes
    Patent number: 4936723
    Abstract: A method and an apparatus for cutting off the beads of seam-welded pipes are disclosed, in which the skew angle of a freely rotatable circular cutting tool is 25.degree.-35.degree., and the tilt angle is 15.degree.-25.degree.. The apparatus comprises a double-walled holder, a double-walled impeder, and a head portion on which the cutting tool is mounted.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: June 26, 1990
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ichiro Yasumura, Moriyuki Kakihara, Koji Nishimoto, Kuniharu Fujimoto