Patents by Inventor Wilhelm Fercke

Wilhelm Fercke 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).

  • Low-alloy zinc material and coin-products made thereof
    Patent number: 4166153
    Abstract: A low-alloy zinc material is disclosed containing a minor amount of titanium, e.g., 0.05 to 1.0 weight percent titanium. The alloy material can be formed into objects which have good cold workability, strength and resistance to corrosion. The zinc alloy materials are tarnish-resistant and can readily be embossed, hollowed, pressed, bent, or the like. They are especially useful as coining material to form coins, coin blanks, plaques, medals, and other useful and/or decorative objects.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: August 28, 1979
    Assignee: Vereinigte Deutsche Metallwerke Aktiengesellschaft
    Inventor: Wilhelm Fercke