US3287133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic dye developer dispersions utilizing water-soluble sulfites
Assignee: Eastman Kodak Co
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Filing: 1963-03-01
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Granted: 1966-11-22
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:37
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
65 words
A PHOTOGRAPHIC COMPOSITION COMPRISING AN ORGANIC HYDROPHILIC COLLOID CONTAINING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN FINELY-DIVIDED DROPLETS OF A WATER-IMMISCIBLE ORGANIC SOLVENT BOILING ABOVE ABOUT 175*C., AND DISSOLVED IN SAID SOLVENT A PHOTOGRAPHIC DYE DEVELOPER HAVING IN THE SAME MOLECULE BOTH THE CHROMOPHORIC SYSTEM OF A DYE AND A HYDROQUINONYL MOIETY CAPABLE OF DEVELOPING PHOTOGRAPHIC SILVER HALIDE, SAID DYE DEVELOPER HAVING BEEN TREATED WITH A WATER-SOLUBLE SULFITE.
Claim 2
Dependent Claim
65 words
A PHOTOGRAPHIC COMPOSITION COMPRISING AN ORGANIC HYDROPHILIC COLLOID CONTAINING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN FINELY-DIVIDED DROPLETS OF A WATER-IMMISCIBLE ORGANIC SOLVENT BOILING ABOVE ABOUT 175*C., AND DISSOLVED IN SAID SOLVENT A PHOTOGRAPHIC DYE DEVELOPER HAVING IN THE SAME MOLECULE BOTH THE CHROMOPHORIC SYSTEM OF A DYE AND A HYDROQUINONYL MOIETY CAPABLE OF DEVELOPING PHOTOGRAPHIC SILVER HALIDE, SAID DYE DEVELOPER HAVING BEEN TREATED WITH A WATER-SOLUBLE SULFITE.
Claim 3
Dependent Claim
29 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING COATED THEREON AT LEAST ONE SILVER HALIDE EMULSION LAYER HAVING CONTIGUOUS THERETO A LAYER OF THE PHOTOGRAPHIC COMPOSITION DEFINED BY CLAIM 10.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |