Patents by Inventor Engelbert Wintzheimer

Engelbert Wintzheimer 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).

  • Gypsum construction sheet with glass fiber/non-woven felt lining sheet
    Patent number: 4504533
    Abstract: The invention concerns a gypsum construction board in which a gypsum core is faced with a two-layer laminate comprised of a nonwoven fiber felt and a glass fiber web of crossed glass fibers wherein the glass fiber web of crossed glass fibers is embedded in the gypsum core and the laminate is in the form of a laminate sheet which extends across the width of the board.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: March 12, 1985
    Assignee: Gebr. Knauf Westdeutsche Gipswerke
    Inventors: Herbert Altenhofer, Engelbert Wintzheimer, Gerhard Neuhauser