Patents by Inventor John P. Kratzer, deceased

John P. Kratzer, deceased 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 of controlling gloss on extrudate
    Patent number: 5264164
    Abstract: A method of using a plastic extruder equipped with an extrusion die and a gloss controlling auxiliary die to produce an extrudate of polymeric material having controlled gloss appearance comprising the steps of first extruding an extrudate of polymeric material through the extrusion die and then passing the extrudate immediately after exiting from the extrusion die through a gloss controlling auxiliary die which is kept at a temperature either higher or lower than the temperature of the extrusion die.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: November 23, 1993
    Assignee: General Motors Corporation
    Inventors: Thomas J. Pickett, Edward J. Wenzel, Donald L. Franck, John P. Kratzer, deceased