Patent US3149974A successfully refreshed from Google Patents.
US3149974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelatino silver halide emulsion layers containing sulfofluoride hardeners
Assignee: Gevaert Photo Producten NV
•
Filing: 1961-01-16
•
Granted: 1964-09-22
•
Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Claeys Daniel Alois
- 👤 Sels Francis Jeanne
- 👤 Vrancken Marcel Nicolas
- 👤 Willems Jozef Frans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; C; C07; C07C; C07C309/00; C07C309/78; C07C309/86; C07C309/88; C07C309/89; G03C8/00; G03C8/02; G03C8/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A COMPOSITION COMPRISING GELATIN CONTAINING THEREIN 1-5% BASED ON THE WEIGHT OF GELATIN OF A COMPOUND ACCORDING TO TE GENERAL FORMULA:
Claim 2
Dependent Claim
21 words
A COMPOSITION COMPRISING GELATIN CONTAINING THEREIN 1-5% BASED ON THE WEIGHT OF GELATIN OF A COMPOUND ACCORDING TO TE GENERAL FORMULA:
References Cited (Backward Citations)
US2614930A
Cited
US2691582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |