US3185571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preserving photographic gelatinous compositions from decomposition
Assignee: Gevaert Photo Producten NV
•
Filing: 1961-05-12
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Granted: 1965-05-25
•
Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Thiers Robrecht Julius
- 👤 Claeys Daniel Alois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PHOTOGRAPHIC GELATINO SILVER HALIDE EMULSION LAYER CONTAINING 0.1 PERCENT TO 1.0 PERCENT, BASED ON THE WEIGHT OF THE DRY GELATIN, OF AT LEAST ONE CHLORIDE SELECTED FROM THE GROUP CONSISTING OF CERIUM, LANTHANUM, NEODYMIUM, SAMARIUM, AND YTTRIUM.
Claim 2
Dependent Claim
38 words
A PHOTOGRAPHIC GELATINO SILVER HALIDE EMULSION LAYER CONTAINING 0.1 PERCENT TO 1.0 PERCENT, BASED ON THE WEIGHT OF THE DRY GELATIN, OF AT LEAST ONE CHLORIDE SELECTED FROM THE GROUP CONSISTING OF CERIUM, LANTHANUM, NEODYMIUM, SAMARIUM, AND YTTRIUM.
References Cited (Backward Citations)
US1844716A
Cited
US2768079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |