Patents by Inventor Gerd A. H. Kupfer

Gerd A. H. Kupfer 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 for coating of moving sheets with a contact adhesive
    Patent number: 4261286
    Abstract: An apparatus for coating moving sheets with a contact adhesive, which apparatus includes rollers for forming a contact adhesive film and rollers for applying the film to a moving sheet, which application rollers include a cooling roller with an adhesive-rejecting envelope or sleeve, a processing roller, and a pivotal support for the pressing roller.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: April 14, 1981
    Assignee: Maschinenfabrik Max Kroenert
    Inventor: Gerd A. H. Kupfer