Patents by Inventor Mark E. Barrera

Mark E. Barrera 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).

  • Polyolefin compositions having a high balance of stiffness and impact strength
    Patent number: 5360868
    Abstract: Disclosed are polyolefin compositions comprising (A) a propylene homopolymer or a crystalline copolymer of propylene and ethylene or a C.sub.4-8 alpha-olefin, (B) an olefin polymer composition, and optionally either, (C) a propylene polymer composition or (D) an olefin polymer rubber.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: November 1, 1994
    Assignee: HIMONT Incorporated
    Inventors: Douglas D. Mosier, Mark E. Barrera, Stephen M. Dwyer