Patents by Inventor Motoaki Egi

Motoaki Egi 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 resistance welding pipes having excellent characterization of welded seams
    Patent number: 8912462
    Abstract: A method of efficiently manufacturing electric resistance welding pipes having excellent characterization of welded seams is provided, by which each lateral edge of a rounded strip immediately before electric resistance welding is securely shaped with desired tapering flexibly in response to change in strip thickness, so that welding quality may be kept to be excellent. A method of manufacturing electric resistance welding pipes, in which a strip is subjected to forming, then edges thereof are formed to substantially face each other, and then the edges are subjected to electric resistance welding to form a pipe, wherein an edge and an edge opposed thereto at one of an upper-surface side and a lower-surface side of the strip are shaped with tapering before the forming by means of cutting or shaving, or finpass forming.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: December 16, 2014
    Assignee: JFE Steel Corporation
    Inventors: Kazuhito Kenmochi, Takatoshi Okabe, Hiroyasu Yokoyama, Yuji Sugimoto, Yoshifumi Fujioka, Kei Sakata, Tomohiro Inoue, Hiroyuki Shirosawa, Motoaki Egi, Yasuo Nishida, Muneyoshi Murakami
  • Method of Manufacturing Electric Resistance Welding Pipes Having Excellent Characterization of Welded Seams
    Publication number: 20080230586
    Abstract: A method of efficiently manufacturing electric resistance welding pipes having excellent characterization of welded seams is provided, by which each lateral edge of a rounded strip immediately before electric resistance welding is securely shaped with desired tapering flexibly in response to change in strip thickness, so that welding quality may be kept to be excellent. A method of manufacturing electric resistance welding pipes, in which a strip is subjected to forming, then edges thereof are formed to substantially face each other, and then the edges are subjected to electric resistance welding to form a pipe, wherein an edge and an edge opposed thereto at one of an upper-surface side and a lower-surface side of the strip are shaped with tapering before the forming by means of cutting or shaving, or finpass forming.
    Type: Application
    Filed: November 9, 2006
    Publication date: September 25, 2008
    Inventors: Kazuhito Kenmochi, Takatoshi Okabe, Hiroyasu Yokoyama, Yuji Sugimoto, Yoshifumi Fujioka, Kei Sakata, Tomohiro Inoue, Hiroyuki Shirosawa, Motoaki Egi, Yasuo Nishida, Muneyoshi Murakami