Patents Examined by Jaret C. Baxter
  • Photographic recording material containing a cyan dye-forming coupler
    Patent number: 5008180
    Abstract: A photographic rocording material is disclosed which contains a phenolic cyan dye-forming coupler which has a sulfone or a modified sulfone group in the 5- position ballast moiety and a substituted acylamino group in the 2- position of the phenolic ring.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, David Hoke