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US3201243A
Expired / Lapsed
US
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Method of inhibiting discoloration of color photographic layers containing dye images and resulting photographic products
Assignee: Eastman Kodak Co
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Filing: 1962-10-18
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Granted: 1965-08-17
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 George W Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:20
CPC Classifications
G; G03; G03C; G03C8/00; G03C7/00; G03C7/30; G03C7/3046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF INHIBITING DISCOLORATION IN A PHOTOGRAPHIC ELEMENT WHICH HAS BEEN EXPOSED, PROCESSED TO A PHOTOGRAPHIC RECORD COMPRISING AT LEAST ONE DYE IMAGE AND IN WHICH RESIDUAL SILVER AND SILVER SALTS HAVE BEEN REMOVED FROM SAID ELEMENT, WHICH COMPRISES IMBIBING IN THE DYE IMAGE AREAS OF SAID PHOTOGRAPHIC ELEMENT AND AQUEOUS SOLUTION COMPRISING A WATER-SOLUBLE SALT OF CYSTEINE AND DRYING SAID PHOTOGRAPHIC ELEMENT WITHOUT SUBSTANTIAL REMOVAL OF SAID WATER-SOLUBLE SALT.
Claim 2
Independent Claim
71 words
A METHOD OF INHIBITING DISCOLORATION IN A PHOTOGRAPHIC ELEMENT WHICH HAS BEEN EXPOSED, PROCESSED TO A PHOTOGRAPHIC RECORD COMPRISING AT LEAST ONE DYE IMAGE AND IN WHICH RESIDUAL SILVER AND SILVER SALTS HAVE BEEN REMOVED FROM SAID ELEMENT, WHICH COMPRISES IMBIBING IN THE DYE IMAGE AREAS OF SAID PHOTOGRAPHIC ELEMENT AND AQUEOUS SOLUTION COMPRISING A WATER-SOLUBLE SALT OF CYSTEINE AND DRYING SAID PHOTOGRAPHIC ELEMENT WITHOUT SUBSTANTIAL REMOVAL OF SAID WATER-SOLUBLE SALT.
References Cited (Backward Citations)
CA488157A
Cited
US2124159A
Cited
US2487446A
Cited
US2788274A
Cited
US2875049A
Cited
US2955036A
Cited
US3068100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |