Patents by Inventor David F. Oberhauser

David F. Oberhauser 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).

  • Photographic image including an ink-acceptable surface
    Patent number: 5554483
    Abstract: There is disclosed a photographic image including an ink-acceptable surface thereon. The photographic image may be formed by known conventional or diffusion transfer techniques. The ink-acceptable surface is formed by applying an aqueous mixture of a polymeric mordant material over the photograph and forming a relatively clear dry coating thereon. The subject coating provides an ink-acceptable surface upon the photograph which accepts and retains ink applied thereto and resist the remove of such ink therefrom.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: September 10, 1996
    Assignee: Polaroid Corporation
    Inventors: Thomas G. DeNoto, Paul E. Nangeroni, David F. Oberhauser
  • Anti-reflection layer of silica matrix with fluorinated polylmer particles
    Patent number: 4769306
    Abstract: Photographic film units are disclosed which incorporate an anti-reflection layer comprising a matrix of silica having dispersed therein particles of a fluorinated polymer. Viewing of the image and/or photoexposure are effected through the anti-reflection layer.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: September 6, 1988
    Assignee: Polaroid Corporation
    Inventors: David F. Oberhauser, Peter H. Roth
  • Photographic product for silver transfer images with polyvinylpyrrolidone in carbon black layer
    Patent number: 4489152
    Abstract: Diffusion transfer film units and processes are disclosed wherein a silver transfer image is formed in an image layer separated from the silver halide emulsion by a layer containing carbon black. Inclusion of polyvinylpyrrolidone in the carbon black layer provides increased silver transfer density.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: December 18, 1984
    Assignee: Polaroid Corporation
    Inventors: David F. Oberhauser, Peter H. Roth