Patents by Inventor Louis M. Wisner

Louis M. Wisner 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).

  • Apparatus and process for making an offset laminated roofing shingle and roofing shingle made thereby
    Patent number: 3998685
    Abstract: An apparatus cuts a saturated sheet into wide and narrow sheets, coats the top and bottom surfaces of the wider sheet with bituminous coating adhesive, shifts the location of the narrower sheet to a position so that the centerlines of each sheet are in alignment, coats the back of the narrower sheet with bituminous adhesive, and laminates the aligned sheets with the narrower sheet adhered to the bottom surface of the wider sheet. The sheets are then cooled, cut into predetermined shapes and packaged. The shaped laminated shingle is also claimed.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: December 21, 1976
    Assignee: The Celotex Corporation
    Inventors: Edward S. Czyzewski, Donald C. Portfolio, Lee Schuster, Louis M. Wisner