Patents by Inventor Jon L. Kuhman

Jon L. Kuhman 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).

  • Extruder screw with mixing section
    Patent number: 7387426
    Abstract: An extruder screw mixing section has a plurality of threads formed on a body of the screw with a pitch defining mixing channels for moving material in a direction from a feed end to a discharge end of the screw. The threads and the mixing channels are interrupted by counter channels that divide the mixing channels into segments of similar diminishing depth profile. A portion of the material moves through the counter channels in direction from the discharge end to the feed end to promote better mixing and melting of the material.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: June 17, 2008
    Assignee: Glycon Corporation
    Inventor: Jon L. Kuhman