Patents by Inventor Kerstin Burckas

Kerstin Burckas 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).

  • Piezoelectric loudspeaker
    Patent number: 6122387
    Abstract: A piezoelectric loudspeaker has a membrane and at least two flexural piezoresonators, one end of which is fixed, while the other end acts mechanically upon the membrane. The membrane is a flat membrane or a conical membrane having an aperture angle smaller than 10.degree..
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: September 19, 2000
    Assignee: Dornier GmbH
    Inventors: Ingo Borchers, Kerstin Burckas, Klaus Renger, Engelbert Kusch