Patents by Inventor Manfred B. Rockel

Manfred B. Rockel 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).

  • 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