Patents by Inventor Gary A. Hand

Gary A. Hand 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).

  • Passivating and silver removal method
    Patent number: 4363705
    Abstract: In the production of records, a mother is formed from a metal master having a nickel core and a silver coating. To produce the mother, the silver coating is removed from the nickel core and the nickel is passivated by treating the metal master with an aqueous solution containing ammonium persulphate. The same aqueous solution can be used for passivating the mother before the mother is electroplated to form a stamper.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: December 14, 1982
    Assignee: Capitol Records, Inc.
    Inventors: Csaba K. Hunyar, Gary A. Hand