Thomas E Gompf, 9938 Thorntree Cir, Penfield, NY 14526

4258120, Mar 24, 1981

Apr 24, 1979

6/032972

Claude F. Gerbal - Bonneuil-sur-Marne, FR
Thomas E. Gompf - Rochester NY
Pierre D. Collet - Nogent-sur-Marne, FR

Eastman Kodak Company - Rochester NY

G03C 140
G03C 110
G03C 700

430223

A nondiffusible sulfonamido compound which is alkali-cleavable upon oxidation to release a diffusible photographically useful material, said nondiffusible sulfonamido compound having the formula: ##STR1## wherein: (a) R. sup. 1 is alkyl, aryl sulfamyl, carbamyl, carbonamido, carbonyl, carbonyloxy or sulfonamido; (b) R. sup. 2 is alkyl having from 1 to 18 carbon atoms, aryl, or alkylphenyl having from 7 to 12 carbon atoms; (c) R. sup. 3 and R. sup. 4 are independently alkyl, or aryl, or R. sup. 3 and R. sup. 4, taken together, form a fused carbocyclic or heterocyclic ring; (d) NHSO. sub. 2 PUG represents a sulfonamido group; (e) PUG represents a photographically useful group; and (f) at least one of R. sup. 1, R. sup. 2, R. sup. 3, or R. sup. 4, or any combination thereof, provides a molecular configuration of such size or shape as to render the compound nondiffusible under alkaline processing conditions, is useful as a redox releaser in photosensitive elements, photographic film units and in processes for transferring and/or retaining a photographic image in color diffusion transfer units. These elements, film units and processes produce retained color images having substantially reduced minimum densities.

5959120, Sep 28, 1999

Jun 12, 1997

8/873651

Jared B. Mooberry - Rochester NY
Thomas E. Gompf - Penfield NY
Brian H. Johnston - Rochester NY

Eastman Kodak Company - Rochester NY

C07D24918
C07D40304
C07D40306
C07C32323

548253

The present invention provides an acetate ester compound of formula (III), ##STR1## a process for synthesizing compound (III), and a process for using that compound to prepare a pyrazolone compound, where the substituent definitions are as defined in the Summary of the Invention.

4605697, Aug 12, 1986

Sep 16, 1983

6/533075

Claude F. Gerbal - Bonneuil-sur-Marne, FR
Thomas E. Gompf - Rochester NY
Pierre D. Collet - Nogent-sur-Marne, FR

Eastman Kodak Company - Rochester NY

C09B 4300
C09B 4312
C09B 43124
C09B 43132

534648

A nondiffusible sulfonamido compound which is alkali-cleavable upon oxidation to release a diffusible photographically useful material, said nondiffusible sulfonamido compound having the formula: ##STR1## wherein: (a) R. sup. 1 is alkyl, aryl sulfamyl, carbamyl, carbonamido, carbonyl, carbonyloxy or sulfonamido; (b) R. sup. 2 is alkyl having from 1 to 18 carbon atoms, aryl, or alkylphenyl having from 7 to 12 carbon atoms; (c) R. sup. 3 and R. sup. 4 are independently alkyl, or aryl, or R. sup. 3 and R. sup. 4, taken together, form a fused carbocyclic or heterocyclic ring; (d) NHSO. sub. 2 PUG represents a sulfonamido group; (e) PUG represents a photographically useful group; and (f) at least one of R. sup. 1, R. sup. 2, R. sup. 3, or R. sup. 4, or any combination thereof, provides a molecular configuration of such size or shape as to render the compound nondiffusible under alkaline processing conditions, is useful as redox releaser in photosensitive elements, photographic film units and in processes for transferring and/or retaining a photographic image in color diffusion transfer units. These elements, film units and processes produce retained color images having substantially reduced minimum densities.

4609610, Sep 2, 1986

Aug 1, 1985

6/761280

Richard P. Dunlap - Penfield NY
Thomas E. Gompf - Penfield NY

Eastman Kodak Company - Rochester NY

G03C 140
G03C 554
G03C 108
G03C 134

430223

Photographic elements and assemblages are described which employ nondiffusible compounds which release photographically useful groups in an imagewise manner as the result of a. beta. -elimination reaction.

3938995, Feb 17, 1976

Jul 10, 1974

5/487083

Thomas Edward Gompf - Penfield NY
William Henry Faul - Rochester NY

Eastman Kodak Company - Rochester NY

G03C 700
G03C 140

96 55

Color photographic elements, compositions and processes for producing color negative images are described which employ a leuco dye comprising the reaction product of a color forming coupler and a N,N-dialkyl-p-phenylenediamine having an electronegative group attached to the benzene ring. The leuco dye is stable against aerial oxidation and can be developed to its corresponding dye with certain black and white developing compositions.

3998642, Dec 21, 1976

Jul 11, 1975

5/594988

Philip T. S. Lau - Rochester NY
Roy L. Orvis - Rochester NY
Thomas E. Gompf - Penfield NY

Eastman Kodak Company - Rochester NY

G03C 140

96100

Color photographic elements are disclosed having, incorporated therein, one or more novel phenolic materials which have the following structure: ##STR1## wherein R. sub. 1 is a non-interfering alkyl, aryl, amino, substituted alkyl or substituted aryl ballasting group of the type which is useful in photographic incorporated cyan color-forming couplers, and R. sub. 2 is hydrogen or a lower alkyl group.

T110042, Sep 1, 1981

Dec 29, 1980

6/220579

Thomas E. Gompf - Rochester NY
Howell A. Hammond - Rochester NY
Jared B. Mooberry - Rochester NY

C07D23110

548373

Novel 5-pyrazolone magenta dye-forming couplers are blocked with a coupler moiety which yields an alkali-soluble or colorless reaction product. The coupler moiety is joined via its coupling position to the enol oxygen of the 5-pyrazolone and is displaced therefrom during processing as a result of reaction by means of oxidized color developing agent to thereby activate the 5-pyrazolone coupler. These couplers have good reactivity and good resistance to aerial contaminants, such as formaldehyde, and can be incorporated in photographic emulsions and elements.

4283472, Aug 11, 1981

Feb 26, 1980

6/124872

Thomas E. Gompf - Rochester NY
Howell A. Hammond - Rochester NY
Jared B. Mooberry - Rochester NY

Eastman Kodak Company - Rochester NY

G03C 700

430 17

Novel 5-pyrazolone magenta dye-forming couplers are blocked with a coupler moiety which yields an alkali-soluble or colorless reaction product. The coupler moiety is joined via its coupling position to the enol oxygen of the 5-pyrazolone and is displaced therefrom during processing as a result of reaction by means of oxidized color developing agent to thereby activate the 5-pyrazolone coupler. These couplers have good reactivity and good resistance to aerial contaminants, such a formaldehyde, and can be incorporated in photographic emulsions and elements.