Patents Represented by Attorney Joshus G. Levitt

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  • Color photographic elements containing yellow colored magenta dye forming masking couplers
    Patent number: 5622818
    Abstract: A multilayer silver halide color photographic element comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler wherein the masking coupler is a 2'-hydroxy-5'-substituted-4-phenylazo-5-pyrazolone. The masking coupler has good coupling activity and desirable hues, and can be obtained in good yields by simple syntheses.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: April 22, 1997
    Assignee: Eastman Kodak Company
    Inventors: Daniel L. Kapp, Janet N. Younathan, Robert J. Ross, James P. Merrill