Patents by Inventor Heidrun Putz

Heidrun Putz 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 for the manufacture of a plastic window
    Patent number: 6210507
    Abstract: A method for the manufacture of a plastic window comprising a frame (2) and at least one pane (4a, 4b) of transparent plastic, in which method the pane (4a, 4b) is joined with the frame (2) at an abutment surface (3a, 3b) provided thereon. The joining is performed by welding with laser light (8), and while the welding is performed, an average abutment pressure of at least approx. 2 MPa is provide between the pane (4a, 4b) and the frame (2).
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: April 3, 2001
    Assignee: Thermoform A/S
    Inventors: Helge Hansen, Hans-Georg Treusch, Heidrun Putz