Patent US3591387A successfully refreshed from Google Patents.
US3591387A
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US
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Silver halide emulsions comprising polymeric acrylamides as sensitizing additives
Assignee: Eastman Kodak Co
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Filing: 1969-04-02
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Granted: 1971-07-06
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Expires: 1989-04-02
Abstract
Abstract PHOTOGRAPHIC SILVER HALIDE COMPOSITIONS AND ELEMENTS HAVING IMPROVED COVERING POWER AND SENSITOMERIC PROPERITIES, OBTAINED BY EMPLOYING POLYMERIC ADDITIVES IN A PHOTOGRAPHIC BINDER ARE DISCLOSED. SAID POLYMERS COMPRISE RECURRING N-(TRIS(HYDROXYMETHYL)METHYL) ACRYLAMIDE UNITS. PROCESSES FOR EFFECTING SAID IMPROVED PROPERTIES AND NOVEL POLYMERS ARE ALSO DISCLOSED.
Inventors
- 👤 David Philip Brust
- 👤 Louis Morton Minsk
- 👤 Edward Peter Abel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |