Patents Assigned to Vereinigte Deutsch Metallwerke AG
  • Gold-colored coin material
    Patent number: 4436790
    Abstract: A copper-base alloy which consists essentially of 1 to 7% tin and 1 to 7% aluminum and contains aluminum and tin in a total not in excess of 10%, balance copper and inevitable impurities which are due to the manufacturer, is disclosed. It is useful as a coinage material of gold color.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: March 13, 1984
    Assignee: Vereinigte Deutsch Metallwerke AG
    Inventors: Bruno Prinz, Manfred B. Rockel, Gunther Rudolph, Ulrich Heubner, Hugo Zoebe
  • Gold-colored coin material
    Patent number: 4401488
    Abstract: An alloy useful as a coinage alloy, especially as a cladding for a coin comprising a core and a cladding is disclosed. The alloy consists essentially of 4 to 6% nickel, 4 to 6% aluminum, balance copper and inevitable impurities which are due to the manufacture. Also disclosed are coins made therefrom having a gold-like color.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: August 30, 1983
    Assignee: Vereinigte Deutsch Metallwerke AG
    Inventors: Bruno Prinz, Manfred B. Rockel, Gunther Rudolph, Ulrich Heubner, Hugo Zoebe