Patents by Inventor Ralph B. Nielson

Ralph B. Nielson 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: 5558980
    Abstract: Photographic elements comprising loaded latex compositions are prepared by (a) combining under conditions of low or moderate shear, in the presence of surfactant, and in the substantial absence of water-miscible or volatile organic solvents, a liquid organic composition comprising at least one photographically useful compound with an aqueous polymer latex, (b) holding the combination resulting from (a) in a liquid state for sufficient time for substantial loading of the organic coposition into the polymer latex to occur, and (c) coating the loaded latex resulting from (b) on a support.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: September 24, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ralph B. Nielson, Thomas A. Rosiek, James S. Honan