Patents by Inventor James Robert Bethea

James Robert Bethea 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).

  • Rheology-modified thermoplastic elastomer compositions and articles fabricated therefrom
    Patent number: 6506842
    Abstract: Rheology-modified thermoplastic elastomer compositions are prepared by peroxide modification of a melt blend of an ethylene/&agr;-olefin polymer or a diene-modified ethylene/&agr;-olefin polymer and a high melting polymer such as polypropylene or a propylene/&agr;-olefin copolymer. The resulting compositions have an elastomeric phase, a non-elastomeric phase and certain physical properties that exceed those of a like composition that is not rheology-modified. The compositions can be used to make a variety of articles of manufacture via conventional procedures.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: January 14, 2003
    Assignee: DuPont Dow Elastomers L.L.C.
    Inventors: Henry George Heck, Deepak Rasiklal Parikh, Laura Bauerle Weaver, James Robert Bethea, Larry Alan Meiske, Michael Francis Martin