Patents by Inventor Gary William VerStrate

Gary William VerStrate 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 block copolymer viscosity modifier
    Patent number: 6110880
    Abstract: A viscosity modifier comprising a low molecular weight block copolymer including A blocks and B blocks, wherein the A blocks comprise at least about 93 wt. % polyethylene and the B blocks comprise a copolymer of between about 40 wt. % to 75 wt. % ethylene and at least one other .alpha.-olefin; wherein the resulting block copolymer has an average ethylene content of between about 60 wt. % to 80 wt. %.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: August 29, 2000
    Assignee: Exxon Chemical Patents Inc
    Inventors: Gary William Verstrate, Charles Cozewith, Thomas John Pacansky, William Myers Davis, Pratima Rangarajan
  • Viscosity modifier polybutadiene polymers
    Patent number: 5945485
    Abstract: The present invention relates to hydrogenated polybutadiene comprising monomeric units of 1,4-butadiene and 1,2-butadiene addition products. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: August 31, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventors: Mark Joseph Struglinski, Gary William VerStrate, Lewis J. Fetters
  • Viscosity modifier polybutadiene polymers
    Patent number: 5703171
    Abstract: The present invention relates to hydrogenated polybutadiene comprising monomeric units of 1,4-butadiene and 1,2-butadiene addition products. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: Exxon Chemical Patents Inc
    Inventors: Mark Joseph Struglinski, Gary William VerStrate, Lewis J. Fetters