Patents by Inventor Lewis R. Palka

Lewis R. Palka 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).

  • Heatable windshield
    Patent number: 7223940
    Abstract: An electrically heatable transparency has at least one substrate, a first bus bar spaced from a second bus bar, and a conductive coating formed over at least a portion of the substrate. The first and second bus bars are in electrical contact with the coating. At least one of the bus bars has an end region in electrical contact with the coating. The end region is tapered such that the coating is of substantially uniform thickness on the end region.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 29, 2007
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Charles S. Voeltzel, Bruce A. Bartrug, James J. Finley, Allen R. Hawk, Lewis R. Palka, Frank J. Pazul, John A. Winter