Patent US2933390A successfully refreshed from Google Patents.
US2933390A
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Supersensitization of photographic silver halide emulsions
Assignee: Eastman Kodak Co
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Filing: 1955-10-12
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Granted: 1960-04-19
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Expires: 1975-10-12
Abstract
No abstract record available.
Inventors
- 👤 John C Mcfall
- 👤 Paul R Crookshank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PHOTOGRAPHIC SILVER HALIDE DEVELOPING-OUT EMULSION CAPABLE OF PRODUCING A DYE IMAGE COMPRISING A GELATINO-SILVER-HALIDE DEVELOPING-OUT EMULSION CONTAINING (1) A DISPERSION OF A PHENOL, COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH A PRIMARY AROMATIC AMINE DEVELOPING AGENT TO FORM A CYAN DYE IMAGE, (2) A THIADICARBOCYANINE DYE SELECTED FROM THE CLASS REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
56 words
A PHOTOGRAPHIC SILVER HALIDE DEVELOPING-OUT EMULSION CAPABLE OF PRODUCING A DYE IMAGE COMPRISING A GELATINO-SILVER-HALIDE DEVELOPING-OUT EMULSION CONTAINING (1) A DISPERSION OF A PHENOL, COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH A PRIMARY AROMATIC AMINE DEVELOPING AGENT TO FORM A CYAN DYE IMAGE, (2) A THIADICARBOCYANINE DYE SELECTED FROM THE CLASS 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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |