Patent US2459575A successfully refreshed from Google Patents.
US2678884A
Expired / Lapsed
US
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Photographic silver halide emulsions of synthetic polymers
Assignee: EIDP Inc
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Filing: 1949-11-18
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Granted: 1954-05-18
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Clifford K Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR INCREASING THE SPEED OF PHOTOGRAPHIC SILVER HALIDE EMULSIONS WHICH COMPRISE SUBJECTING AN AQUEOUS DISPERSION OF LIGHTSENSITIVE SILVER HALIDES IN A SYNTHESIC HYDROPHILIC HYDROXY-CONTAINING POLYMER HAVING A PLURALITY OF RECURRING INTRALINEAR
Claim 2
Dependent Claim
33 words
A PROCESS FOR INCREASING THE SPEED OF PHOTOGRAPHIC SILVER HALIDE EMULSIONS WHICH COMPRISE SUBJECTING AN AQUEOUS DISPERSION OF LIGHTSENSITIVE SILVER HALIDES IN A SYNTHESIC HYDROPHILIC HYDROXY-CONTAINING POLYMER HAVING A PLURALITY OF RECURRING INTRALINEAR
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US2376371A
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US2499097A
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US2448534A
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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) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |