Patents by Inventor Anne T. Wyand

Anne T. Wyand 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).

  • Polymeric black pigment dispersions and ink jet ink compositions
    Patent number: 7655708
    Abstract: An ink jet ink composition comprising an aqueous media and a pigment dispersion comprising a specific carbon black pigment and a polymeric dispersant wherein said polymeric dispersant is a copolymer comprising at least a hydrophobic methacrylate or acrylate monomer containing an aliphatic chain having greater than or equal to 12 carbons; and a hydrophilic methacrylic or acrylic acid monomer; wherein said copolymer comprises at least 10% by weight of the methacrylate or acrylate monomer and at least 5% by weight of the methacrylic or acrylic acid monomer; and wherein the copolymer comprises, in total, 20 to 95 weight % of hydrophobic monomer.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: February 2, 2010
    Assignee: Eastman Kodak Company
    Inventors: Gary L. House, Anne T. Wyand