Patents by Inventor David F. Bates

David F. Bates 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: 5594047
    Abstract: Loaded latex dispersions of hydrophobic photographically useful compounds with a wide variety of polymer latices are prepared by preparing an oil phase solution of the hydrophobic compound or compounds, preferably essentially free of water-miscible or volatile solvent, combining the oil solution with one or more aqueous solutions, at least one of which contains a polymer latex, and mixing the combination of oil solution, aqueous solution and latex under high shear or turbulence sufficient to cause loading of the photographically useful compound into the dispersed polymer latex wherein the pH of the mixture does not need to be significantly changed.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: January 14, 1997
    Assignee: Eastman Kodak Company
    Inventors: Ralph B. Nielsen, Thomas A. Rosiek, David F. Bates, James S. Honan, Hwei-Ling Yau