US3582346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide emulsion stabilized with ethylene-diurea
Assignee: GAF Corp
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Filing: 1968-07-18
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Granted: 1971-06-01
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Expires: 1988-07-18
Abstract
Abstract A STABILIZED SILVER HALIDE PHOTOGRAPHIC EMULSION WHICH IS SENSITIZED WITH ALKYLENE OXIDE POLYMERS AND STABILIZED WITH ETHYLENE-DIUREA.
Inventors
- 👤 Fritz Dersch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; C; C08; C08K; C08K5/00; C08K5/16; C08K5/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |