Patents by Inventor Donald Ross Hazelton

Donald Ross Hazelton 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).

  • Thermoplastic blend containing engineering resin
    Patent number: 6346571
    Abstract: A thermoplastic composition which may be unvulcanized or vulcanized is provided which comprises a polymer blend of an elastomeric thermoplastic engineering resin and a halogen-containing copolymer of a C4 to C7 isomonoolefin and a para-alkylstyrene. A process for preparing a dynamically vulcanized composition is also provided.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: February 12, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Narayanaswami Raja Dharmarajan, Robert Chester Puydak, Hsien Chang Wang, Kenneth William Powers, Thomas Chen-Chi Yu, Donald Ross Hazelton
  • Thermoplastic elastomeric compositions
    Patent number: 6268438
    Abstract: A cross-linked or at least partially cross-linked thermoplastic elastomeric composition formed of from 10 to 90 percent of a first polymeric material comprised of ethylene, &agr;-olefin and optionally a non-conjugated diene, and 90 to 10 percent of a second olefin polymeric material, wherein at least one of the first or second polymeric materials is at least partially the product of a metallocene polymerization reaction.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: July 31, 2001
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria Dolores Ellul, Donald Ross Hazelton, Charles Cozewith, Aspy Keki Mehta
  • Thermoplastic blend containing engineering resin
    Patent number: 6013727
    Abstract: A thermoplastic composition which may be unvulcanized or vulcanized is provided which comprises a polymer blend of an elastomeric thermoplastic engineering resin and a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene. A process for preparing a dynamically vulcanized composition is also provided.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: January 11, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Narayanaswami Raja Dharmarajan, Robert Chester Puydak, Hsien Chang Wang, Kenneth William Powers, Thomas Chen-Chi Yu, Donald Ross Hazelton