Patents by Inventor Gordon B. Dunnington

Gordon B. Dunnington 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).

  • Ram-extrusion apparatus for non-melt fabricable polymeric resins
    Patent number: 4266919
    Abstract: In an apparatus for the ram-extrusion of non-melt fabricable polymeric resin comprising means for forcing the resin through a forming die from an extrusion chamber, the improvement wherein the ram head comprises at least about 10 percent fluoropolymer.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: May 12, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gordon B. Dunnington, Carl H. Manwiller