US2912329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green sensitization for photographic emulsions containing coupler dispersions
Assignee: Eastman Kodak Co
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Filing: 1957-08-23
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Granted: 1959-11-10
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Expires: 1977-08-23
Abstract
No abstract record available.
Inventors
- 👤 Jean E Jones
- 👤 Spence John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39292; C; C09; C09B; C09B23/00; C09B23/02; C09B23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A GREEN-SENSITIVE PHOTOGRAPHIC SILVER HALIDE EMULSION FOR COLOR PHOTOGRAPHY CONTAINING A COLOR-FORMER FOR THE MAGENTA IMAGE CAPABLE OF REACTING WITH THE OXIDATION PRODUCTS OF A PHENYLENEDIAMINE DEVELOPER TO FORM AN AZOMETHINE DYE, AND A SPECTRAL SENSITIZING DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
46 words
A GREEN-SENSITIVE PHOTOGRAPHIC SILVER HALIDE EMULSION FOR COLOR PHOTOGRAPHY CONTAINING A COLOR-FORMER FOR THE MAGENTA IMAGE CAPABLE OF REACTING WITH THE OXIDATION PRODUCTS OF A PHENYLENEDIAMINE DEVELOPER TO FORM AN AZOMETHINE DYE, AND A SPECTRAL SENSITIZING DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |