Patents by Inventor Elke Biberbach

Elke Biberbach 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-power electric contact
    Patent number: 4339644
    Abstract: A low-power electrical contact particularly suitable for switching and plug-in connections. The contact comprises an outer contact layer and a substrate composed of a copper base alloy. The contact layer consists essentially of an alloy of 35-55% by weight gold, 18-33.5% silver, 30-40% palladium, and (i) 1-6% indium, or (ii) 0.5-2% tin together with 0.5-2% indium. An intermediate layer of nickel or copper-nickel may be interposed between the contact layer and the substrate.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: July 13, 1982
    Assignee: W. C. Heraeus GmbH
    Inventors: Fritz Aldinger, Elke Biberbach, Albrecht Bischoff, Nils Harmsen
  • Alloys for jets, nozzles, and perforated base plates for producing glass fibers
    Patent number: 4155730
    Abstract: The invention provides jets, nozzles, and perforated base plates produced from alloys that consist essentially of 40-70% platinum, 20-50% palladium, 5-15% rhodium, and 0.5-4% gold. They are resistant to attack by molten glass, particularly glass containing silicates.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: May 22, 1979
    Assignee: W. C. Heraeus GmbH
    Inventors: Elke Biberbach, Nils Harmsen