Patents by Inventor John Mark Brown

John Mark Brown 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).

  • Styrene butadiene block copolymers for film applications
    Patent number: 9550869
    Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: January 24, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John Mark Brown, Nathan E. Stacy, Carleton E. Stouffer, John D. Wilkey, Michael A. Smith
  • Styrene Butadiene Block Copolymers For Film Applications
    Publication number: 20150218325
    Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.
    Type: Application
    Filed: April 15, 2015
    Publication date: August 6, 2015
    Inventors: John Mark Brown, Nathan E. Stacy, Carleton E. Stouffer, John D. Wilkey, Michael A. Smith
  • Styrene butadiene block copolymers for film applications
    Patent number: 9040628
    Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 26, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John Mark Brown, Michael A. Smith, Nathan E. Stacy, Carleton E. Stouffer, John D. Wilkey
  • Styrene butadiene block copolymers for film applications
    Patent number: 8415429
    Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 9, 2013
    Assignee: Chervron Phillips Chemical Company LP
    Inventors: John Mark Brown, Michael A. Smith, Nathan E. Stacy, Carleton E. Stouffer, John D. Wilkey
  • Styrene Butadiene Block Copolymers for Film Applications
    Publication number: 20080134642
    Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 12, 2008
    Inventors: John Mark Brown, Michael A. Smith, Nathan E. Stacy, Carleton E. Stouffer, John D. Wilkey