Patents by Inventor Paul T. Lubberts

Paul T. Lubberts 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).

  • Polarizing layer with adherent protective layer
    Patent number: 7329434
    Abstract: The invention relates to a process for forming an integral protective layer on a polarizing layer comprising coating the layer with a sol, gelling the sol, and then curing the coating to form a contiguous crosslinked adherent protective layer.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: February 12, 2008
    Assignee: Eastman Kodak Company
    Inventors: YuanQiao Rao, Tomohiro Ishikawa, Paul T. Lubberts, Timothy C. Schunk
  • Protecting layer for gelatin based AGX photographic products
    Patent number: 5965304
    Abstract: The present invention is an imaged photographic element which includes a support, at least one silver halide light-sensitive emulsion layer superposed on the support; and a protective overcoat furthest from the support. The protective overcoat is superposed on the silver halide light sensitive layer. The protective overcoat includes a first polymeric particle having a glass transition temperature of greater than or equal to 25.degree. C. and a particle size of from 5 to 500 nm and a second polymeric particle having a glass transition temperature of less than 25.degree. C. and a particle size of from 5 to 500 nm at a weight ratio of the first polymeric particle to the second polymeric particle of from 3:97 to 80:20 and wax particle having a size of from 0.01 .mu.m to 0.5 .mu.m. The protective overcoat is applied from an aqueous coating.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: October 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: Hwei-ling Yau, Wendy S. Krzemien, Paul T. Lubberts