Patents by Inventor Hans Jochen Barth

Hans Jochen Barth 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).

  • Apparatus for the preparation of foamed thermoplastic extruded profiles
    Patent number: 3941544
    Abstract: An apparatus for the production of extruded profiles of foamed thermoplasts consisting of an extruder having an extrusion screw and a form-giving extruder head having a flow channel therethrough characterized in that at least part of the length of said flow channel is divided by separating walls having a thickness of 0.2 to 3 mm arranged in the axial direction into individual channels of such a length and cross-section area whereby each individual channel has a nozzle coefficient k of from 0.1 to 2 mm.sup.3 ; as well as the process of extrusion.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: March 2, 1976
    Assignee: Wacker-Chemie GmbH
    Inventor: Hans Jochen Barth