Patents by Inventor Gerd L. Anstadt

Gerd L. Anstadt 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).

  • Process for the production of imitation wood from synthetic resins
    Patent number: 4141944
    Abstract: A process is provided for producing an imitation wood workpiece by forming a synthetic resin workpiece having a cellular plastic core and a densified covering layer after extruding and solidifying synthetic resin and thereafter imparting an appearance of wood grain to the synthetic resin workpiece by heating the densified covering layer of the workpiece and by relief embossing texture furrows in portions of the densified covering layer.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: February 27, 1979
    Assignee: Gebruder Kommerling Kunststoffwerke G.m.b.H.
    Inventors: Gerd L. Anstadt, Helmut Kesseler
  • Frame for doors, windows and the like
    Patent number: 4130976
    Abstract: The present invention relates to a frame for doors, windows and the like. The frame is provided with a foamed synthetic resin hollow profile having a densified outer skin. Further provided is a hollow metal profile within the foamed synthetic resin profile and lying against the corner surface of the resin profile.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: December 26, 1978
    Assignee: Gerbruder Kommerling Kunststoffwerke G.m.b.H.
    Inventors: Helmut Kesseler, Gerd L. Anstadt, Hermann Kiefer