US2957767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide dispersions
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-12-18
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Granted: 1960-10-25
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Forrest V Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PHOTOGRAPHIC EMULSION COMPRISING A SILVER HALIDE OF SMALL PARTICLE SIZE PREPARED BY A DOUBLE DECOMPOSITION REACTION IN WATER BETWEEN A WATER-SOLUBLE HALIDE AND A WATER-SOLUBLE SILVER SALT IN THE PRESENCE OF FROM 0.001% TO 0.1% BASED ON THE WEIGHT OF THE TOTAL REACTION MIXTURE OF A DISPERSANT WHICH IS A COPOLYMER CONSISTING OF THE REPEATING UNIT
Claim 2
Dependent Claim
57 words
A PHOTOGRAPHIC EMULSION COMPRISING A SILVER HALIDE OF SMALL PARTICLE SIZE PREPARED BY A DOUBLE DECOMPOSITION REACTION IN WATER BETWEEN A WATER-SOLUBLE HALIDE AND A WATER-SOLUBLE SILVER SALT IN THE PRESENCE OF FROM 0.001% TO 0.1% BASED ON THE WEIGHT OF THE TOTAL REACTION MIXTURE OF A DISPERSANT WHICH IS A COPOLYMER CONSISTING OF THE REPEATING UNIT
References Cited (Backward Citations)
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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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |