US2592514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer photographic color film in which at least one layer contains a mixture of cyan, magenta, and yellow dye image intermediates
Assignee: GAF Chemicals Corp
•
Filing: 1947-05-07
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Granted: 1952-04-08
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Expires: 1967-05-07
Abstract
No abstract record available.
Inventors
- 👤 Harold C Harsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:24
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A MULTILAYER PHOTOGRAPHIC COLOR FILM COMPRISING A SUPPORT BEARING SUPERIMPOSED RED, GREEN AND BLUE SENSITIVE SILVER HALIDE EMULSION LAYERS CONTAINING COLOR FORMERS CAPABLE OF YIELDING UPON EXPOSURE AND DEVELOPMENT WITH A PRIMARY AROMATIC AMINO DEVELOPING AGENT A DYE SELECTED FROM THE GROUP CONSISTING OF AZOMETHINE AND QUINONEIMINE DYES COMPLEMENTARY IN COLOR TO THE SENSITIVITY OF THE LAYER, SAID DYES HAVING ORIGINAL UNDESIRED ABSORPTION GAMMAS IN THE SPECTRAL REGIONS IN WHICH THEY SHOULD BE FULLY TRANSMITTANT, THE RED, GREEN AND BLUE SENSITIVE LAYERS CONTAINING IN ADDITION A MINOR AMOUNT OF A MIXTURE OF MAGENTA AND YELLOW, YELLOW AND CYAN, AND CYAN AND MAGENTA COLOR FORMERS, RESPECTIVELY, IN SUCH PROPORTIONS THAT ALL OF SAID UNDESIRED ABSORPTION GAMMAS ARE RAISED APPROXIMATELY TO THE SAME VALUE REPRESENTED BY A GAMMA AT LEAST AS HIGH AS THE HIGHEST OF SAID ORIGINAL UNDESIRED ABSORPTION GAMMAS.
Claim 2
Dependent Claim
139 words
A MULTILAYER PHOTOGRAPHIC COLOR FILM COMPRISING A SUPPORT BEARING SUPERIMPOSED RED, GREEN AND BLUE SENSITIVE SILVER HALIDE EMULSION LAYERS CONTAINING COLOR FORMERS CAPABLE OF YIELDING UPON EXPOSURE AND DEVELOPMENT WITH A PRIMARY AROMATIC AMINO DEVELOPING AGENT A DYE SELECTED FROM THE GROUP CONSISTING OF AZOMETHINE AND QUINONEIMINE DYES COMPLEMENTARY IN COLOR TO THE SENSITIVITY OF THE LAYER, SAID DYES HAVING ORIGINAL UNDESIRED ABSORPTION GAMMAS IN THE SPECTRAL REGIONS IN WHICH THEY SHOULD BE FULLY TRANSMITTANT, THE RED, GREEN AND BLUE SENSITIVE LAYERS CONTAINING IN ADDITION A MINOR AMOUNT OF A MIXTURE OF MAGENTA AND YELLOW, YELLOW AND CYAN, AND CYAN AND MAGENTA COLOR FORMERS, RESPECTIVELY, IN SUCH PROPORTIONS THAT ALL OF SAID UNDESIRED ABSORPTION GAMMAS ARE RAISED APPROXIMATELY TO THE SAME VALUE REPRESENTED BY A GAMMA AT LEAST AS HIGH AS THE HIGHEST OF SAID ORIGINAL UNDESIRED ABSORPTION GAMMAS.
References Cited (Backward Citations)
US2032401A
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US2207631A
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US2268630A
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US2294731A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |