Patents by Inventor Guy A. Hoenke

Guy A. Hoenke 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 and apparatus for the extrusion of foamable thermoplastic materials
    Patent number: 3954929
    Abstract: Plastic foam is extruded into and from a channel where it expands from an extrusion orifice. A pressure controlled gas pocket provides support for the foaming material generally adjacent the extrusion die. The arrangement permits extrusion of foam having widely varying characteristics with a single apparatus.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: May 4, 1976
    Assignee: The Dow Chemical Company
    Inventor: Guy A. Hoenke