Patents by Inventor Frederick J. Zoepfl

Frederick J. Zoepfl 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).

  • Polymer and irradiation treatment method
    Patent number: 4586995
    Abstract: A novel polymer and polymer treatment method are provided. The method involves irradiation of a polymer under non-gelling conditions at a temperature above the polymer melting temperature and in the absence of oxygen. The polymer is characterized by a unique long chain Y-branched molecular structure.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: May 6, 1986
    Assignee: Phillips Petroleum Company
    Inventors: James C. Randall, Frederick J. Zoepfl