Patents by Inventor Roger MacLiver Roy

Roger MacLiver Roy 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).

  • Patent number: 7846997
    Abstract: The invention relates to a solid pigment preparation comprising at least 35% by weight of one or more pigments and at most 65% by weight of a dispersant resin, wherein the dispersant resin comprises a polyester backbone having at least one pendent hydrophilic polyalkylene oxide monoalkylether group, the dispersant resin comprising 30 to 80% by weight of alkylene oxide units and having a number average molecular weight of 1,000 to 150,000.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: December 7, 2010
    Assignee: Akzo Nobel Coatings International B.V.
    Inventors: Klaas Jan Hendrik Kruithof, Rienk Hettema, Roger MacLiver Roy, Hendrik Meijer