Patent US2527260A successfully refreshed from Google Patents.
US2527260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelatino-silver halide emulsions having low setting temperatures and method of coating same
Assignee: Ilford Imaging UK Ltd
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Filing: 1945-06-27
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Granted: 1950-10-24
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Expires: 1965-06-27
Abstract
No abstract record available.
Inventors
- 👤 Hart John Alfred Henry
- 👤 Lee Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; G03C1/005; G03C1/06; G03C1/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PHOTOGRAPHIC EMULSION COMPRISING SILVER HALIDE DISPERSED IN A GELATIN-ANION SOAP COMPLEX MADE BY ADMIXING A GELATIN SILVER HALIDE EMULSION WITH AN AQUEOUS MEDIUM CONTAINING 2 TO 25% ON THE WEIGHT OF THE GELATIN OF AN ANION SOAP, 30-70% OF THE WEIGHT OF THE MEDIUM BEING WATER-MISCIBLE ORGANIC LIQUID.
Claim 2
Dependent Claim
49 words
A PHOTOGRAPHIC EMULSION COMPRISING SILVER HALIDE DISPERSED IN A GELATIN-ANION SOAP COMPLEX MADE BY ADMIXING A GELATIN SILVER HALIDE EMULSION WITH AN AQUEOUS MEDIUM CONTAINING 2 TO 25% ON THE WEIGHT OF THE GELATIN OF AN ANION SOAP, 30-70% OF THE WEIGHT OF THE MEDIUM BEING WATER-MISCIBLE ORGANIC LIQUID.
References Cited (Backward Citations)
US1772081A
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US1997745A
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US2142311A
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US2118059A
Cited
GB537256A
Cited
US2282001A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |