Patents by Inventor Helmut Bollinger

Helmut Bollinger 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).

  • Method for ion-aided coating on electrically insulating substrates
    Patent number: 4419380
    Abstract: The present invention is directed to coating low-conductive or non-conductive materials in a vacuum, such as coating electrically-insulating substrates, by operating a plasma source comprising a thermionic cathode and anode with the anode-voltage continuously alternating between an ignition voltage U.sub.Z and an extinction voltage U.sub.L at a frequency of between several kHz and several hundred kHz, the thermionic cathode continuously emitting electrons.
    Type: Grant
    Filed: November 3, 1981
    Date of Patent: December 6, 1983
    Assignee: VEB Hochvakuum Dresden
    Inventors: Helmut Bollinger, Bernd Bucken, Dietmar Schulze, Rudiger Wilberg