Patent US2860974A successfully refreshed from Google Patents.
US2860974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic color correction process
Assignee: Eastman Kodak Co
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Filing: 1955-08-15
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Granted: 1958-11-18
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Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Williams John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:04
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF PRODUCING A MASKING IMAGE IN A MUULTILAYER PHOTOGRAPHIC ELEMENT,AT LEAST ONE OF WHICH LAYERS IS A SILVER BALIDE EMULSION LAYER CONTAINING AT LEAST ONE UNCOLORED COLOR-FORMING COUPLER WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO SILVER HALIDE DEVELOPING AGENT TO FORM A NON-DIFFUSING DYE IN SAID LAYER AND SAID LAYER FURTHER CONTAINING A YELLOE COLORED COLOR-FORMING COUPLER HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
68 words
THE METHOD OF PRODUCING A MASKING IMAGE IN A MUULTILAYER PHOTOGRAPHIC ELEMENT,AT LEAST ONE OF WHICH LAYERS IS A SILVER BALIDE EMULSION LAYER CONTAINING AT LEAST ONE UNCOLORED COLOR-FORMING COUPLER WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO SILVER HALIDE DEVELOPING AGENT TO FORM A NON-DIFFUSING DYE IN SAID LAYER AND SAID LAYER FURTHER CONTAINING A YELLOE COLORED COLOR-FORMING COUPLER HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2428054A
Cited
US2688538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |