US3269252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material
Assignee: Gevaert Photo Producten NV
•
Filing: 1962-05-07
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Granted: 1966-08-30
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Keyser Lodewijk Felix De
- 👤 Albrecht Frans
- 👤 Meeussen Louis Achilles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
METHOD FOR PREVENTING PHOTOGRAPHIC MATERIALS, CONSISTING OF A PLASTIC SUPPORT AND AT LEAST ONE GELATINO SILVER HALIDE EMULSION LAYER, FROM BEING ELECTROSTATICALLY CHARGED, COMPRISING APPLYING ONTO THE PLASTIC SUPPORT SUBBING LAYER FOR ANCHORING THE SUPPORT TO THE GELATIN EMULSION LAYER, SAID SUBBING LAYER CONTAINING COLLOIDAL CARBON AND GELATIN, SAID CARBON BEIN PRESENT IN AN AMOUNT EQUAL TO ABOUT 30-70 PERCENT BY WEIGHT OF GELATIN.
Claim 2
Dependent Claim
64 words
METHOD FOR PREVENTING PHOTOGRAPHIC MATERIALS, CONSISTING OF A PLASTIC SUPPORT AND AT LEAST ONE GELATINO SILVER HALIDE EMULSION LAYER, FROM BEING ELECTROSTATICALLY CHARGED, COMPRISING APPLYING ONTO THE PLASTIC SUPPORT SUBBING LAYER FOR ANCHORING THE SUPPORT TO THE GELATIN EMULSION LAYER, SAID SUBBING LAYER CONTAINING COLLOIDAL CARBON AND GELATIN, SAID CARBON BEIN PRESENT IN AN AMOUNT EQUAL TO ABOUT 30-70 PERCENT BY WEIGHT OF GELATIN.
References Cited (Backward Citations)
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Cited
US2327828A
Cited
US2403533A
Cited
US2462534A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |