Patents by Inventor Isamu Kimoto

Isamu Kimoto 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).

  • Line pipe metal arc welded with wire alloy
    Patent number: 5723089
    Abstract: A wire for gas metal arc welding containing 0.01 to 0.06 wt % of C, 0.10 to 0.60 wt % of Si, 0.9 to 3.1 wt % of Mn, 0.7 to 2.0 wt % of Cr, 0.005 to 0.06% of Ti, not greater than 0.08 wt % of Al and if necessary, 0.05 to 0.30 wt % of Cu, and the balance of Fe and unavoidable impurities. This wire improves the selective corrosion resistance and the low temperature toughness of the resulting weld metal, and is particularly suitable for circumferential welding of line pipes for transporting CO.sub.2 -containing petroleum, natural gases or CO.sub.2.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: March 3, 1998
    Assignee: Nippon Steel Corporation
    Inventors: Rikio Chijiiwa, Hiroyuki Ogawa, Koichi Shinada, Yoshinori Ogata, Hiroshi Tamehiro, Hajime Ishikawa, Isamu Kimoto, Yoshio Terada