Patents by Inventor Dieter Woeppel

Dieter Woeppel 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).

  • Patent number: 4254585
    Abstract: A process and apparatus for the treatment of the recording surface of magnetic recording media using consecutively arranged units for burnishing, cleaning and calendering the web of plastics film provided with a magnetic coating. The process and apparatus of the invention are particularly suitable for the manufacture of magnetic tapes for the recording and playback of video signals.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: March 10, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Wulf Muenzner, Hilmar Lechner, Dieter Woeppel, Lothar Gliniorz