Patents by Inventor Joan Cromie

Joan Cromie 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).

  • Aqueous acrylic coating composition
    Patent number: 7368499
    Abstract: An aqueous coating composition comprising a dispersion in an aqueous medium of (i) an acrylic addition polymer, (ii) an acrylic addition polymer having an acid value lower than that of polymer (i), and (iii) a base. The composition may also comprise a cross-linker, such as a polyisocyanate or a melamine resin. Also disclosed are methods for making such aqueous coating compositions and aqueous coating compositions made by such methods.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: May 6, 2008
    Assignee: PPG Industries Ohio, Inc.
    Inventors: David Robert Fenn, Andrew Robert French, Joan Cromie
  • Aqueous acrylic coating composition
    Publication number: 20050038175
    Abstract: An aqueous coating composition comprising a dispersion in an aqueous medium of (i) an acrylic addition polymer having an acid value of at least 20, and (ii) an acrylic addition polymer having an acid value lower than that of polymer (i). The composition may also comprise a cross-linker, such as a polyisocyanate or a melamine resin.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 17, 2005
    Inventors: David Fenn, Andrew French, Joan Cromie