Patents by Inventor Rokuro Fujimoto

Rokuro Fujimoto 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).

  • Welding material for low temperature steels
    Patent number: 4017711
    Abstract: A welding material for low temperature steels composed of a core wire or coated core wire, the wire containing 0.05 to 0.5% carbon, 0.15 to 0.75% silicon, 20 to 50% manganese, 4 to 17% chromium, 0.005 to 0.5% nitrogen and more than 0.5 to 10% molybdenum, with the balance being iron and unavoidable impurities.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: April 12, 1977
    Assignee: Nippon Steel Corporation
    Inventors: Hiroyuki Honma, Hirofumi Yoshimura, Takeshi Nishi, Rokuro Fujimoto