Patents Assigned to Sherritt Gordon Mines Ltd.
  • Method of making aureate colored coins, medallions and tokens and products so made
    Patent number: 4579761
    Abstract: An aureate coin, coin blank, medallion, medallion blank, token or token blank has a coin-shaped core with opposed faces and a peripheral side edge and of mintable metallic material. An electroplated coating of copper and tin completely encases the core and provides a golden appearance. The electroplated coating contains from about 8 to about 16% tin by weight and has a thickness of from about 10 to about 150 .mu.m.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: April 1, 1986
    Assignee: Sherritt Gordon Mines Ltd.
    Inventors: Michael J. H. Ruscoe, Willie Seibt