Patents Assigned to Tulalip Consultoria Comercial Sociedade Unipessaol S.A.
  • Patent number: 6043011
    Abstract: A multilayer silver halide color photographic element comprises a support having coated thereon a silver antihalation layer, an interlayer, at least two red-sensitive silver halide emulsion layers, at least two green-sensitive silver halide emulsion layers a yellow filter layer, and at least two blue-sensitive silver halide emulsion layers, wherein a silver halide emulsion layer or a nonsensitive layer adjacent thereto comprises a bleach accelerator releasing coupler of formulaA-(TIME).sub.n -S-X-Rwherein A represents a coupler residue releasing from (TIME).sub.n -S-X-R upon reaction with the oxidation product of a color developing agent; TIME represents a timing group releasing S-X-R with delay under developing conditions; n represents 0 or 1; X represents a divalent linking groups consisting of an alkylene group containing 1 to 8 carbon atoms; and R represents a group selected in the group consisting of a), b) and c): ##STR1## wherein R.sub.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: March 28, 2000
    Assignee: Tulalip Consultoria Comercial Sociedade Unipessaol S.A.
    Inventors: Isabella Cogliolo, Paolo Beretta, Ivano Delprato, Sergio Massirio