Patents by Inventor Charles Thessen

Charles Thessen 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).

  • Novel roofing membrane and method of making
    Patent number: 4897293
    Abstract: Novel procedures for preparing linear low density polyethylene adhesive-coated sheet materials having a rough, texturized surface rendering them particularly useful as non-slip roofing membranes; and novel adhesive-coated sheet materials obtained thereby.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: January 30, 1990
    Assignee: Kendall Company
    Inventor: Charles Thessen