Patent CH313327A successfully refreshed from Google Patents.
Patent US3764327A successfully refreshed from Google Patents.
US3764327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic light sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1971-12-22
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Granted: 1973-10-09
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Expires: 1991-12-22
Abstract
Abstract THE COLOR DENSITY OF PHOTOGRAPHIC LIGHT-SENSITIVE ELEMENTS IS INCREASED BY INCORPORATING IN AN EMULSION LAYER A POLYMER OF CONSTITUENTS REPRESENTED BY THE FOLLOWING FORMULAE: -CH2-CH(-COO-R)-, -CH2-CH(-CO-NH2)-, -CH2-CH(-COOH)-, = X,Y,Z WHEREIN R REPRESENTS AN ALKYL GROUP PREFERABLY HAVING 1 TO 4 CARBON ATOMS AND X, Y, AND Z ARE NUMBERS SATISGYING THE FOLLOWING CONDITIONS: 40<=X<=90 10<=Y<=60 0<=Z<=40 X+Y+Z=100
Inventors
- 👤 T Nagae
- 👤 N Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:55
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |