Patents by Inventor Blair Alfred Graham

Blair Alfred Graham 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).

  • Ethylene alpha olefin copolymers and polymerization processes for making the same
    Patent number: 8378043
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: February 19, 2013
    Assignee: Univation Technologies, LLC
    Inventors: Blair Alfred Graham, Mark P. Ossowski, James M. Farley, Rainer Kolb
  • Ethylene-Alpha Olefin Copolymers and Polymerization Processes for Making the Same
    Publication number: 20110086990
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 14, 2011
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Blair Alfred GRAHAM, Mark P. OSSOWSKI, James M. FARLEY, Rainer KOLB
  • Ethylene-alpha olefin copolymers and polymerization processes for making the same
    Patent number: 7875690
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: January 25, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Blair Alfred Graham, Mark P. Ossowski, James M. Farley, Rainer Kolb