Patents by Inventor Martin Scharf

Martin Scharf 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 materials with antihalation means based upon silver halide emulsions
    Patent number: 4312941
    Abstract: The present invention is directed to a photographic material based upon silver halide emulsions comprising an emulsion layer containing a diffusible dye, and an antihalation layer containing a mordant for fixing the diffusible dye superimposed directly over the emulsion layer, the antihalation layer having its maximum degree of absorption in the same spectal range as the maximum degree of sensitivity of the emulsion layer.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: January 26, 1982
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Martin Scharf, Ulrich Meisel