Patents Assigned to Nippon Mining & Metals Company, Ltd.
  • Treating solution for gold-plated material
    Patent number: 5650088
    Abstract: A treating solution for a gold- or gold-alloy-plated material having nickel or a nickel-containing alloy as an underplating on a metallic material, the solution including a particular inhibitor, such as benzotriazole, a lubricant containing a particular fatty acid, and an emulsifier containing a particular alkyl phosphate. Treating is performed by coating the gold or gold-alloy-plated material with the treating solution or by electrolyzing in the treating solution using the gold-plated material as an anode.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 22, 1997
    Assignee: Nippon Mining & Metals Company, Ltd.
    Inventor: Atsushi Kodama