Patents by Inventor Katsuji Dambayashi

Katsuji Dambayashi 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).

  • Patent number: 7755001
    Abstract: The present invention provides a high Cr Ni-based alloy filler material of which weld cracking resistance can sufficiently be increased by suppressing generation of scales, and a welding rod for shielded metal arc welding that exhibits sufficiently increased weld cracking resistance. The high Cr Ni-based alloy filler material comprises, in percent by weight, C: 0.04% or less, Si: 0.01 to 0.5%, Mn: 7% or less, Cr: 28 to 31.5%, Nb: 0.5% or less, Ta: 0.005 to 3.0%, Fe: 7 to 11%, Al: 0.01 to 0.4%, Ti: 0.01 to 0.45%, V: 0.5% or less, and, as inevitable impurities, P: 0.02% or less, S: 0.015% or less, O: 0.01% or less, N: 0.002 to 0.1%, and the balance: Ni.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: July 13, 2010
    Assignees: Mitsubishi Heavy Industries, Ltd., Nippon Welding Rod Co., Ltd.
    Inventors: Nobutaka Nakajima, Katsuji Dambayashi, Takashi Miyake, Masahiko Toyoda, Seiji Asada, Seiichi Kawaguchi, Yoshihiro Tada, Teiichiro Saito, Norihito Ogawa
  • Publication number: 20070272671
    Abstract: The present invention provides a high Cr Ni-based alloy filler material of which weld cracking resistance can sufficiently be increased by suppressing generation of scales, and a welding rod for shielded metal arc welding that exhibits sufficiently increased weld cracking resistance. The high Cr Ni-based alloy filler material comprises, in percent by weight, C: 0.04% or less, Si: 0.01 to 0.5%, Mn: 7% or less, Cr: 28 to 31.5%, Nb: 0.5% or less, Ta: 0.005 to 3.0%, Fe: 7 to 11%, Al: 0.01 to 0.4%, Ti: 0.01 to 0.45%, V: 0.5% or less, and, as inevitable impurities, P: 0.02% or less, S: 0.015% or less, O: 0.01% or less, N: 0.002 to 0.1%, and the balance: Ni.
    Type: Application
    Filed: January 21, 2005
    Publication date: November 29, 2007
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., NIPPON WELDING ROD CO., LTD.
    Inventors: Nobutaka Nakajima, Katsuji Dambayashi, Takashi Miyake, Masahiko Toyoda, Seiji Asada, Seiichi Kawaguchi, Yoshihiro Tada, Teiichiro Saito, Norihito Ogawa