Patents by Inventor Roger Francis Graham Brown

Roger Francis Graham 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).

  • Solid pigment concentrates
    Patent number: 8372195
    Abstract: Solid pigment concentrate comprising at least one pigment and a dispersant comprising a polyamine backbone and one or more hydrophobic pendent groups, characterized in that the concentrate further comprises a non-ionic 5 surface active agent comprising polyoxyalkylene groups. The polyamine backbone can for instance comprise polyalkylene imine building blocks.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: February 12, 2013
    Assignee: Akzo Nobel Coatings International B.V.
    Inventors: Steven Henry, Roger Francis Graham Brown
  • Pigment preparation
    Patent number: 7842757
    Abstract: The invention relates to a solid pigment preparation comprising a pigment and a dispersant resin, wherein the composition comprises at least 35% by weight of at least one pigment and at most 65% by weight of dispersant resin, calculated on the combined weight of pigment and dispersant resin, wherein the dispersant resin comprises a polymer backbone produced by chain-reaction polymerization having pendent hydrophilic polyalkylene oxide side groups, and wherein the pigment particles within the preparation have average particle sizes in the range of 50 nm to 5,000 nm.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: November 30, 2010
    Assignee: Akzo Nobel Coatings International B.V.
    Inventors: Jamie MacLiver Roy, Hendrik Jan Willem Van Den Haak, Roger Francis Graham Brown
  • PIGMENT PREPARATION
    Publication number: 20090030139
    Abstract: The invention relates to a solid pigment preparation comprising a pigment and a dispersant resin, wherein the composition comprises at least 35% by weight of at least one pigment and at most 65% by weight of dispersant resin, calculated on the combined weight of pigment and dispersant resin, wherein the dispersant resin comprises a polymer backbone produced by chain-reaction polymerization having pendent hydrophilic polyalkylene oxide side groups, and wherein the pigment particles within the preparation have average particle sizes in the range of 50 nm to 5,000 nm.
    Type: Application
    Filed: October 3, 2006
    Publication date: January 29, 2009
    Applicant: Akzo Nobel Coatings International B.V.
    Inventors: Jamie MacLiver Roy, Hendrik Jan Willem Van Den Haak, Roger Francis Graham Brown
  • Solid Pigment Concentrates
    Publication number: 20080214730
    Abstract: Solid pigment concentrate comprising at least one pigment and a dispersant comprising a polyamine backbone and one or more hydrophobic pendent groups, characterized in that the concentrate further comprises a non-ionic 5 surface active agent comprising polyoxyalkylene groups. The polyamine backbone can for instance comprise polyalkylene imine building blocks.
    Type: Application
    Filed: October 3, 2006
    Publication date: September 4, 2008
    Inventors: Steven Henry, Roger Francis Graham Brown