US3595662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive material
Assignee: Agfa Gevaert NV
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Filing: 1967-12-07
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Granted: 1971-07-27
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Expires: 1987-12-07
Abstract
Abstract A LIGHT-SECSITVE MATERIAL COMPRISING A SILVER HALIDE EMULSION LAYER AND CONTAINING A MERCURY(II) CHELATE OF A (POLY) AMINO-(POLY)CARBOXYLIC ACID IN THE FORM OF THE ACID OR A WATER-SOLUBLE SALT IS DESCRIBED. THE CHELATC EXERSTS A STABILIZING AND FOG-INHIBITING ACTION UPON THE LIGHTSENSITIVE MATERIAL WITHOUT CAUSING APPRECIABLE DESENSITIZATION.
Inventors
- 👤 Jozef Frans Willems
- 👤 Robrecht Julius Thiers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09; G03C1/34; G03C1/346
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |