Patents by Inventor Xue L. He

Xue L. He 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).

  • Continuous process for manufacture of crosslinked, oriented polyethylene extrudates
    Patent number: 5505900
    Abstract: High molecular weight polyethylene products of high strength, good thermal resistance and creep resistance process in which the polyethylene is melt drawn in a multiple-stage drawing process in which the polyethylene extrudate is treated sequentially by a first drawing process which uses an elongating draw at an elongation strain rate of from about 0.03 to 0.5 S.sup.-1, a subsequent stage of elongating draw at a lower elongational strain rate, whilst subjecting the extruded polyethylene to UV crosslinking during the subsequent stage of elongating draw at lower elongational strain rate.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: April 9, 1996
    Inventors: Dedo Suwanda, Stephen T. Balke, Xue L. He