Patents by Inventor Gunter Eiden

Gunter Eiden 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 extruding a thermoplastic melt
    Patent number: 4812267
    Abstract: On extrusion of thermoplastic melts, flow anomalies occurring in the extrusion dies can be decisively reduced when dies are used whose surfaces coming into contact with the melts are provided with a thermally applied spray coating.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: March 14, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Ludwig Hoffmann, Gunter Eiden, Eugen Morach