US3113864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing fog in reversal color films processed in developers containing couplers
Assignee: Eastman Kodak Co
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Filing: 1959-06-11
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Granted: 1963-12-10
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Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 Barbara C Yager
- 👤 Catherine M Spath
- 👤 Judith A Schwan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:53
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/3924; G03C7/39276
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PHOTOGRAPHIC REVERSAL COLOR PROCESS FOR PROCESSING A PHOTOEXPOSED MULTI-LAYER PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIVE TO THE BLUE REGION OF THE SPECTRUM, A PHOTOGRAPHIC SILVER HALIDE EMULSION SPECTRALLY SENSITIZED TO THE GREEN REGION OF THE SPECTRUM AND A PHOTOGRAPHIC SILVER HALIDE EMULAION SPECTRALLY SENSITIZED TO THE RED REGION OF THE SPECTRUM, COMPRISING DEVELOPING SAID PHOTOGRAPHIC ELEMENT IN A PHOTOGRAPHIC DEVELOPER FOR PRODUCING AT LEAST ONE BLACK-AND-WHITE NEGATIVE IMAGE BUT NO COLOR IMAGE, SUBJECTING SAID PHOTOGRAPHIC ELEMENT TO AT LEAST ONE REVERSAL RE-EXPOSURE, CONTACTING THE SILVER HALIDE EMULSION LAYERS OF SAID PHOTOGRAPHIC ELEMENT WITH AN AQUEOUS SOLUTION CONSISTNG ESSENTIALLY OF WATER AND AT LEAST 0.25 GRAM PER LITER OF A COMPOUND SELECTED FROM THE CLASS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
127 words
A PHOTOGRAPHIC REVERSAL COLOR PROCESS FOR PROCESSING A PHOTOEXPOSED MULTI-LAYER PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIVE TO THE BLUE REGION OF THE SPECTRUM, A PHOTOGRAPHIC SILVER HALIDE EMULSION SPECTRALLY SENSITIZED TO THE GREEN REGION OF THE SPECTRUM AND A PHOTOGRAPHIC SILVER HALIDE EMULAION SPECTRALLY SENSITIZED TO THE RED REGION OF THE SPECTRUM, COMPRISING DEVELOPING SAID PHOTOGRAPHIC ELEMENT IN A PHOTOGRAPHIC DEVELOPER FOR PRODUCING AT LEAST ONE BLACK-AND-WHITE NEGATIVE IMAGE BUT NO COLOR IMAGE, SUBJECTING SAID PHOTOGRAPHIC ELEMENT TO AT LEAST ONE REVERSAL RE-EXPOSURE, CONTACTING THE SILVER HALIDE EMULSION LAYERS OF SAID PHOTOGRAPHIC ELEMENT WITH AN AQUEOUS SOLUTION CONSISTNG ESSENTIALLY OF WATER AND AT LEAST 0.25 GRAM PER LITER OF A COMPOUND SELECTED FROM THE CLASS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |