US2843490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersensitizing combinations comprising meso-substituted carbocyanine dyes and polyvalent metal salts
Assignee: Eastman Kodak Co
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Filing: 1955-03-08
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Granted: 1958-07-15
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Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jean E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14; G03C1/18; G03C1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A WASHED, PHOTOGRAPHIC SILVER HALIDE EMULSION SELECTED FROM THE GROUP CONSISTING OF A WASHED, PHOTOGRAPHIC SILVER CHLORIDE EMULSION AND A WASHED, PHOTOGRAPHIC SILVER CHLOROBROMIDE EMULSION CONTAINING (1) AT LEAST ONE SENSITIZING DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
41 words
A WASHED, PHOTOGRAPHIC SILVER HALIDE EMULSION SELECTED FROM THE GROUP CONSISTING OF A WASHED, PHOTOGRAPHIC SILVER CHLORIDE EMULSION AND A WASHED, PHOTOGRAPHIC SILVER CHLOROBROMIDE EMULSION CONTAINING (1) AT LEAST ONE SENSITIZING DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2284877A
Cited
US2399083A
Cited
US2432865A
Cited
US2517541A
Cited
US2618556A
Cited
US2598079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |