Patents by Inventor David B. Ehret

David B. Ehret 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: 5832558
    Abstract: A heated wiper blade assembly for vehicles comprises an electric resistance heating element molded within the conventional wiper blade. A normally closed timer or temperature sensor controls operation of the heating element. The heating element heats the wiper blade and prevents ice build-up on the blade during snow or sleet precipitation.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: November 10, 1998
    Inventors: David B. Ehret, Boyd P. Ehret