Patents Assigned to Chugai-Duki Kogyo Kabushiki-Kaisha
  • Method of compounding decorative precious metal alloy selectively onto austenite stainless steel article
    Patent number: 4309461
    Abstract: Method of preparing metallic compound materials for spectacle frames, watch casings, bracelets for watches and others, necklaces, and other decorative articles, which comprise a base made from austenite stainless steel, and an alloy of precious metals of a desired purity such as gold, platinum, and palladium which is selectively or partially laid over said base steel.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: January 5, 1982
    Assignee: Chugai-Duki Kogyo Kabushiki-Kaisha
    Inventor: Akira Shibata