Patents by Inventor Doug Kuhlmann

Doug Kuhlmann 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).

  • Injection molding of asphalt-based compositions
    Patent number: 5985200
    Abstract: An injection molding process and apparatus to manufacture asphalt-based products which utilizes a heated mixing chamber to continuously blend molten thermoplastic polymer and asphalt to form an injection moldable composition.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 16, 1999
    Assignee: Owens Corning Fiberglass Technology, Inc.
    Inventors: Donn R. Vermilion, Jorge A. Marzari, Frederick H. Ponn, Doug Kuhlmann