Patents by Inventor Stephen Barry Downing

Stephen Barry Downing 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).

  • Low VOC coating composition
    Patent number: 8197902
    Abstract: A pigmented, aqueous coating composition comprising i) an aqueous dispersion of non-crosslinkable addition oligomer of weight average molecular weight of from 5000 to 15000 Daltons and calculated Fox Tg greater than 0° C. and less than 50° C. ii) an aqueous dispersion of addition polymer of weight average molecular weight greater than 53,000 Daltons, calculated Fox Tg greater than 10° C. and less than 40° C. and mean particle diameter of less than 150 nanometers, where the ratio of i):ii) is from 0.25:1 to 2.70:1, based on % weight dispersion solids.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: June 12, 2012
    Assignee: Imperial Chemical Industries PLC
    Inventors: Philip Louis Taylor, Denis Malcolm Harvey Bovey, Stephen Barry Downing, Krisztina Erdelyi-Brooks
  • LOW VOC COATING COMPOSITION
    Publication number: 20100068397
    Abstract: A pigmented, aqueous coating composition comprising i) an aqueous dispersion of non-crosslinkable addition oligomer of weight average molecular weight of from 5000 to 15000 Daltons and calculated Fox Tg greater than 0° C. and less than 50° C. ii) an aqueous dispersion of addition polymer of weight average molecular weight greater than 53,000 Daltons, calculated Fox Tg greater than 10° C. and less than 40° C. and mean particle diameter of less than 150 nanometers, where the ratio of i):ii) is from 0.25:1 to 2.70:1, based on % weight dispersion solids.
    Type: Application
    Filed: January 10, 2006
    Publication date: March 18, 2010
    Inventors: Philip Louis Taylor, Denis Malcolm Harvey Bovey, Stephen Barry Downing, Krisztina Erdelyi-Brooks
  • Extrusion process
    Patent number: 6767956
    Abstract: A process for producing an aqueous dispersion of a polymer in an aqueous medium having a viscosity below 10 Pa.s, in which the polymer is dispersed in an aqueous medium in an extruder at a temperature above 100° C., the pressure inside the extruder being maintained above atmospheric pressure so that the aqueous medium does not boil inside the extruder.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: July 27, 2004
    Assignee: Imperial Chemical Industries plc
    Inventors: Riaz Ahmad Choudhery, Kenneth Andrew Murray, Stephen Barry Downing, David John Southgate
  • Aqueous dispersion of addition polymer particles
    Patent number: 6646041
    Abstract: An aqueous dispersion of particles of an addition polymer of ethylenically unsaturated monomers which dispersion also contains a stabilizing copolymer of a) weak acid containing species b) crosslinking species and optionally c) ethylenically singly unsaturated comonomers wherein the stabilizing copolymer contains at least 0.3% of crosslinking species.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: November 11, 2003
    Assignee: Imperial Chemical Industries PLC
    Inventors: Neal St. John Williams, Stephen Barry Downing
  • Extrusion process
    Publication number: 20030176564
    Abstract: A process for producing an aqueous dispersion of a polymer in an aqueous medium having a viscosity below 10 Pa.s, in which the polymer is dispersed in an aqueous medium in an extruder at a temperature above 100° C., the pressure inside the extruder being maintained above atmospheric pressure so that the aqueous medium does not boil inside the extruder.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventors: Riaz Ahmad Choudhery, Kenneth Andrew Murray, Stephen Barry Downing, David John Southgate
  • Aqueous dispersion of addition polymer particles
    Publication number: 20030130408
    Abstract: An aqueous dispersion of particles of an addition polymer of ethylenically unsaturated monomers which dispersion also contains a stabilising copolymer of
    Type: Application
    Filed: September 25, 2001
    Publication date: July 10, 2003
    Applicant: Imperial Chemical Industries PLC
    Inventors: Neal St. John Williams, Stephen Barry Downing
  • Cementitious compositions
    Patent number: 4070199
    Abstract: Cured cementitious compositions having a modulus of rupture of greater than 15 MN/m.sup.2 are prepared by curing and drying a homogeneous uncured cementitious composition which comprises in defined proportions hydraulic cement, water and a selected water-dispersible polymer.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: January 24, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Stephen Barry Downing, Desmond Wilfred John Osmond, Maurice Wainwright Skinner, Edmund James West, David George Dawson