Patents by Inventor Ralf Duersch

Ralf Duersch 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).

  • Vehicle antenna
    Patent number: 6448935
    Abstract: An antenna includes a support and an electroconductive first antenna element, e.g., an electroconductive coating, located on the support and spaced from at least one electroconductive second antenna element. The first antenna element is connected to a ground through an electronic filter device, such as an inductor, configured to pass selected frequencies, e.g., AM frequencies, to the ground to eliminate the selected frequencies from the signal provided by the first antenna element. The first antenna element is preferably located between the second antenna element and a source of electronic noise to shield the second antenna element from at least a portion of the electronic noise. The second antenna element receives and provides at least one of the selected frequencies passed to the ground from the first antenna element.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: September 10, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Andreas Fuchs, Ralf Duersch, Charles S. Voeltzel
  • Vehicle antenna
    Publication number: 20010038355
    Abstract: An antenna includes a support and an electroconductive first antenna element, e.g., an electroconductive coating, located on the support and spaced from at least one electroconductive second antenna element. The first antenna element is connected to a ground through an electronic filter device, such as an inductor, configured to pass selected frequencies, e.g., AM frequencies, to the ground to eliminate the selected frequencies from the signal provided by the first antenna element. The first antenna element is preferably located between the second antenna element and a source of electronic noise to shield the second antenna element from at least a portion of the electronic noise. The second antenna element receives and provides at least one of the selected frequencies passed to the ground from the first antenna element.
    Type: Application
    Filed: February 9, 2001
    Publication date: November 8, 2001
    Inventors: Andreas Fuchs, Ralf Duersch, Charles S. Voeltzel