US2705200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipack color film containing nondiffusing color formers and processing thereof
Assignee: GAF Chemicals Corp
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Filing: 1950-11-15
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Granted: 1955-03-29
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Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Tulagin Vsevolod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A MULTILAYER MATERIAL FOR PRODUCING COLOR IMAGES IN THE THREE SUBTRACTIVE COLORS, TO WIT, YELLOW, MAGENTA AND CYAN, COMPRISING A BASE AND ONLY TWO SENSITIVE EMULSION LAYERS, ONE EMULSION LAYER CONTAINING TWO DIFFERENTLY COLOR SENSITIZED GROUPS OF SILVER HALIDE GRAINS SENSITIZED RESPECTIVELY FOR GREEN ONLY AND FOR RED ONLY LOCATED ON THE SAID BASE, SAID LAYER CONTAINING AS THE SOLE COLOR FORMER A PHENOLIC COMPOUND CAPABLE OF COUPLING PARA TO THE PHENOLIC HYDROXYL GROUP AND BEING SUBSTITUTED META TO SAID HYDROXYL GROUP BY A MEMBER OF THE CLASS CONSISTING OF HYDROGEN AND A SUBSTITUENT REPLACEABLE ON
Claim 2
Dependent Claim
96 words
A MULTILAYER MATERIAL FOR PRODUCING COLOR IMAGES IN THE THREE SUBTRACTIVE COLORS, TO WIT, YELLOW, MAGENTA AND CYAN, COMPRISING A BASE AND ONLY TWO SENSITIVE EMULSION LAYERS, ONE EMULSION LAYER CONTAINING TWO DIFFERENTLY COLOR SENSITIZED GROUPS OF SILVER HALIDE GRAINS SENSITIZED RESPECTIVELY FOR GREEN ONLY AND FOR RED ONLY LOCATED ON THE SAID BASE, SAID LAYER CONTAINING AS THE SOLE COLOR FORMER A PHENOLIC COMPOUND CAPABLE OF COUPLING PARA TO THE PHENOLIC HYDROXYL GROUP AND BEING SUBSTITUTED META TO SAID HYDROXYL GROUP BY A MEMBER OF THE CLASS CONSISTING OF HYDROGEN AND A SUBSTITUENT REPLACEABLE ON
References Cited (Backward Citations)
US1168183A
Cited
US1954452A
Cited
US1996928A
Cited
GB446392A
Cited
GB448161A
Cited
US2168182A
Cited
GB513234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |