Patents by Inventor Kjell-Ake Gustafsson

Kjell-Ake Gustafsson 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).

  • Method of producing a wood-thermoplastic composite material
    Patent number: 5746958
    Abstract: A method is disclosed for producing a wood-thermoplastic composite material using a high bulk density feedstock. The feedstock is formed by feeding a wood-thermoplastic mixture to a pellet mill where the bulk density thereof is increased by a significant amount. The pelletized feedstock may be stored for later formation into a finished product and may be blended as necessary to maintain product quality. The feedstock is easy to handle and transport and provides a manufacturer with a large degree of flexibility and control over the manufacturing process.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: May 5, 1998
    Assignee: Trex Company, L.L.C.
    Inventors: Kjell-Ake Gustafsson, John J. Muller, Roger A. Wittenberg