Patents Assigned to Fukuda Metal Foil & Powder Industrial Co., Ltd.
  • Method of surface treatment of copper foil or a copper clad laminate for internal layer
    Patent number: 4981560
    Abstract: The surface of copper foil or a copper clad laminate for an internal layer is subjected to electrolysis in an aqueous solution containing diethylenetriamine pentacetic acid and copper ion by using the copper foil or a copper clad laminate for the internal layer as the cathode.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: January 1, 1991
    Assignee: Fukuda Metal Foil & Powder Industrial Co., Ltd.
    Inventors: Toshiyuki Kajihara, Katsuhito Fukuda, Masato Takami