Patents by Inventor Gerald E. Wynn

Gerald E. Wynn 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).

  • Co-extruded tube
    Patent number: 4791965
    Abstract: A tube having an elongated core composed of a flexible narrow molecular weight distribution first polymeric composition, a sheath composed of a broader molecular weight second polymeric composition co-extruded over the outer core surface, and a liner composed of a broader molecular weight distribution second polymeric composition co-extruded over the inner core surface. The core may be composed of a composition exhibiting relative poor processability, and the sheath and liner of a composition exhibiting better processability.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: December 20, 1988
    Assignee: James Hardie Irrigation, Inc.
    Inventor: Gerald E. Wynn