Patents by Inventor Earl W. Scott

Earl W. Scott 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).

  • Single extruder screw for efficient blending of miscible and immiscible polymeric materials
    Patent number: 6132076
    Abstract: A single extruder screw is presented which includes a plurality of equidistant undercut barriers disposed in a preselected pattern within the channel of an extrusion screw. The undercut barriers are disposed in the first metering stage and second metering stage and provide increased dispersive and distributed mixing for highly viscous difficult to blend materials. In another embodiment the single extruder includes a slotted blister ring, having slots and lands disposed thereon, positioned between the first metering stage and the vent zone to further increase the amount of mixing.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: October 17, 2000
    Assignee: General Electric Company
    Inventors: Sadhan C. Jana, Earl W. Scott, Uttandaraman Sundararaj