US3082088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for maintaining the clarity of photographic silver halide emulsions at relatively high developer temperatures
Assignee: Agfa Gevaert NV
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Filing: 1961-01-11
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Granted: 1963-03-19
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Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 Heilmann Max
- 👤 Jessien Wilhelm
- 👤 Stracke Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:51
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; C07D249/00; C07D249/16; C07D249/18; C07D409/00; C07D409/02; C07D409/12; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PHOTOGRAPHIC MATERIAL WHICH COMPRISES A LIGHTSENSITIVE SILVER HALIDE EMULSION LAYER AND A CONTIGUOUS AUXILIARY LAYER, AT LEAST ONE OF WHICH LAYERS CONTAINS A DERIVATIVE OF AMINO-BENTRIAZOLE SELECTED FROM THOSE HAVING THE FOLLOWING GENERAL FORMULAE:
Claim 2
Dependent Claim
35 words
A PHOTOGRAPHIC MATERIAL WHICH COMPRISES A LIGHTSENSITIVE SILVER HALIDE EMULSION LAYER AND A CONTIGUOUS AUXILIARY LAYER, AT LEAST ONE OF WHICH LAYERS CONTAINS A DERIVATIVE OF AMINO-BENTRIAZOLE SELECTED FROM THOSE HAVING THE FOLLOWING GENERAL FORMULAE:
References Cited (Backward Citations)
GB350996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |