Patent US2377953A successfully refreshed from Google Patents.
Patent US2753263A successfully refreshed from Google Patents.
US2753263A
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Silver halide emulsion containing a polymeric polyamine as an acid dye mordant
Assignee: EIDP Inc
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Filing: 1953-09-10
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Granted: 1956-07-03
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Expires: 1973-09-10
Abstract
No abstract record available.
Inventors
- 👤 Gray Russell Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/835; G03C7/00; G03C7/22; G03C7/25
Claims Analysis
Total Claims: 0
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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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |