US3148987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material
Assignee: Gevaert Photo Producten NV
•
Filing: 1961-10-02
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Granted: 1964-09-15
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Willems Jozef Frans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A SILVER HALIDE EMULSION LAYER AND CONTAINING IN AT LEAST ONE OF ITS WATER-PERMEABLE LAYERS AN IMIDAZOLIDINE-4-THIONE OF THE FORMULA:
Claim 2
Dependent Claim
24 words
PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A SILVER HALIDE EMULSION LAYER AND CONTAINING IN AT LEAST ONE OF ITS WATER-PERMEABLE LAYERS AN IMIDAZOLIDINE-4-THIONE OF THE FORMULA:
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |