Patents by Inventor Karola Weigel-Krengel

Karola Weigel-Krengel 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 of manufacturing a magnetic head for a video magnetic tape apparatus
    Patent number: 4788762
    Abstract: A method for manufacturing a video magnetic head in which two soft magnetic core halves (2a, 2b) of amorphous metal are connected via a non-magnetic gap (5) and the core halves are bilaterally supported by core supports (3a, 3b; 4a, 4b) of ferrite. The core halves with the core supports are combined to a core compound by melting a thin low melting point glass layer (7) which is sputtered on the core halves. The combination process is effected by means of simultaneous influence of temperature and pressure.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: December 6, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Horst Gukkenberger, Karl Eberle, Karola Weigel-Krengel