Patents Examined by Lee L. Wright
  • Photographic material and process comprising a pyrazoloazole dye-forming coupler
    Patent number: 4948722
    Abstract: Novel pyrazoloazole dye-forming couplers comprising (I) at least one polyether group (A) comprising at least two ether (--O--) groups and (II) having between the group (A) and the pyrazoloazole nucleus a linking group (L) that is capable of increasing the reactivity of the coupler to enable improved dye images in a photographic element and process. These couplers are useful in photographic silver halide elements and processes.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: August 14, 1990
    Assignee: Eastman Kodak Company
    Inventor: John W. Harder