Patents by Inventor Jimmy L. Griggs

Jimmy L. Griggs 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).

  • Extrusion screw tip
    Publication number: 20030206482
    Abstract: A tip for an extruder screw includes a body having a first end for attachment to a screw, a second end, and an outer surface. A wiper extends outwardly from an outer surface of the body. In one embodiment, the wiper is a substantially helical conveying flight. In another embodiment the tip includes at least two substantially helical conveying flights on the outer surface of the body.
    Type: Application
    Filed: May 1, 2002
    Publication date: November 6, 2003
    Inventor: Jimmy L. Griggs