Patent US2910359A successfully refreshed from Google Patents.
US2910359A
Expired / Lapsed
US
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Silver halide emulsions and processes for preparing same
Assignee: EIDP Inc
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Filing: 1957-08-28
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Granted: 1959-10-27
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Expires: 1977-08-28
Abstract
No abstract record available.
Inventors
- 👤 Maffet Vere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR STABILIZATION OF A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH COMPRISES UNIFORMLY ADMIXING WITH SAID EMULSION AN AQUEOUS DISPERSION OF FINELY DIVIDED PARTICLES OF A WATER-INSOLUBLE METAL HYDROXIDE TAKE FROM THE GROUP CONSISTING OF COBALT, NICKEL AND COPPER HYDROXIDE IN AN AMOUNT SUFFICIENT TO INTRODUCE ABOUT 1.0 TO ABOUT 30.0 MOLES OF SAID HYDROXIDE PER 1000 MOLES OF SILVER HALIDE.
Claim 2
Dependent Claim
61 words
A PROCESS FOR STABILIZATION OF A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH COMPRISES UNIFORMLY ADMIXING WITH SAID EMULSION AN AQUEOUS DISPERSION OF FINELY DIVIDED PARTICLES OF A WATER-INSOLUBLE METAL HYDROXIDE TAKE FROM THE GROUP CONSISTING OF COBALT, NICKEL AND COPPER HYDROXIDE IN AN AMOUNT SUFFICIENT TO INTRODUCE ABOUT 1.0 TO ABOUT 30.0 MOLES OF SAID HYDROXIDE PER 1000 MOLES OF SILVER HALIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |