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Patent US3342596A successfully refreshed from Google Patents.
US3342596A
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Benzothiazolium compounds for controlling overdevelopment
Assignee: Eastman Kodak Co
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Filing: 1964-03-11
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Granted: 1967-09-19
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 James L Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:47
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/3924; G03C7/39276; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09; G03C7/407; G03C7/413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A HARDENING COMPOSITION FOR USE IN AN AQUEOUS PREHARDENER BATH FOR TREATING A PHOTOGRAPHIC ELEMENT HAVING AT LEAST ONE GELATINO-SILVER HALIDE EMULSION LAYER COMPRISING A GELATIN HARDENING AGENT AND A COMPOUND FOR PREVENTING OVERDEVELOPMENT OF THE TOP EMULSION LAYER AND HAVING THE FOLLOWING GERERAL FORMULA:
Claim 2
Dependent Claim
45 words
A HARDENING COMPOSITION FOR USE IN AN AQUEOUS PREHARDENER BATH FOR TREATING A PHOTOGRAPHIC ELEMENT HAVING AT LEAST ONE GELATINO-SILVER HALIDE EMULSION LAYER COMPRISING A GELATIN HARDENING AGENT AND A COMPOUND FOR PREVENTING OVERDEVELOPMENT OF THE TOP EMULSION LAYER AND HAVING THE FOLLOWING GERERAL FORMULA:
References Cited (Backward Citations)
CA677534A
Cited
US2131038A
Cited
US2288586A
Cited
US2694716A
Cited
US3113864A
Cited
US3189453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |