US2852382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler dispersions for color photography containing protein polymers
Assignee: Eastman Kodak Co
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Filing: 1955-08-11
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Granted: 1958-09-16
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Expires: 1975-08-11
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Illingsworth
- 👤 John R Dann
- 👤 Jr John W Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CAPABLE OF PRODUCING A DUE IMAGE HAVING IMPROVED CONTRAST AND DYE DENSITY UPON EXPOSURE AND DEVELOPMENT WITH A PRIMARY AROMATIC AMINE DEVELOPING AGENT, COMPRISING A SILVER HALIDE EMULSION CONTAINING AN ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF A COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH SAID DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT AND A COMPOSITION COMPRISING (A) AN ORGANIC COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH SAID DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT AND (B) AND ORGANIC CRYSTALLOIDAL SOLVENT FOR SAID ORGANIC COLOR-FORMING COMPOUND, SAID SOLVENT HAVING A BOILING POINT ABOUT 175*C. AND BEING PERMEABLE TO THE OXIDATION PRODUCTS OF SAID DEVELOPING AGENT FORMED DURING PHOTOGRAPHIC DEVELOPMENT, AND A POLYMERIC COMPOSITION RESULTING FROM THE POLYMERIZATION OF A MIXTURE OF (1) 5 TO 95% BY WEIGHT OF A PORTION MATERIAL SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED PROTENS AND SATUREATED ACYLATED PROTEINS AND (2) FROM 95 TO 5% BY WEIGHT OF A LEAST ONE MONOETHYLENICALLY-UNSATURATED COMPOUND CONTAINING THE -CH=C<GROUP, SAID PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING LESS THAN ABOUT ONE PART OF SAID ORGANIC CRYSTALLOIDAL SOLVENT PER PART OF SAID COLORFORMING COMPOUND.
Claim 2
Dependent Claim
182 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CAPABLE OF PRODUCING A DUE IMAGE HAVING IMPROVED CONTRAST AND DYE DENSITY UPON EXPOSURE AND DEVELOPMENT WITH A PRIMARY AROMATIC AMINE DEVELOPING AGENT, COMPRISING A SILVER HALIDE EMULSION CONTAINING AN ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF A COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH SAID DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT AND A COMPOSITION COMPRISING (A) AN ORGANIC COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH SAID DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT AND (B) AND ORGANIC CRYSTALLOIDAL SOLVENT FOR SAID ORGANIC COLOR-FORMING COMPOUND, SAID SOLVENT HAVING A BOILING POINT ABOUT 175*C. AND BEING PERMEABLE TO THE OXIDATION PRODUCTS OF SAID DEVELOPING AGENT FORMED DURING PHOTOGRAPHIC DEVELOPMENT, AND A POLYMERIC COMPOSITION RESULTING FROM THE POLYMERIZATION OF A MIXTURE OF (1) 5 TO 95% BY WEIGHT OF A PORTION MATERIAL SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED PROTENS AND SATUREATED ACYLATED PROTEINS AND (2) FROM 95 TO 5% BY WEIGHT OF A LEAST ONE MONOETHYLENICALLY-UNSATURATED COMPOUND CONTAINING THE -CH=C<GROUP, SAID PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING LESS THAN ABOUT ONE PART OF SAID ORGANIC CRYSTALLOIDAL SOLVENT PER PART OF SAID COLORFORMING COMPOUND.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |