Patents by Inventor Wilfried Fröhlich

Wilfried Fröhlich 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).

  • Fuel tank
    Patent number: 6491180
    Abstract: A fuel tank for a motor vehicle comprising a wall composed of two shells arranged one above the other. The outer shell of the wall preferably has an inlet orifice and an outlet orifice. A filter element is arranged in front of the outlet orifice. Scavenging air from the inlet orifice thereby passes first into a gap between the shells and subsequently to a filter element. As a result, fuel vapors can no longer diffuse through the wall and pollute the environment.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: December 10, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Markus Distelhoff, Karl Eck, Wilfried Fröhlich, Dieter Keller, Justus Klöker, Knut Meyer, Ingo Mohr, Rainer Moser, Bernd Rumpf, Wolfgang Sinz