US3730726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic light-sensitive elements
Assignee: Fujifilm Holdings Corp
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Filing: 1970-09-14
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Granted: 1973-05-01
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Expires: 1990-09-14
Abstract
Abstract BY INCORPORATING A COPOLYMER OF VINYL ALCOHOL AND VINYL PYRROLIDONE, A PARTIALLY SAPONIFICATED POLYVINYL ALCOHOL, OR A COPOLYMER OF VINYL ALCOHOL AND CYANOETHYLVINYL ETHER OR A COPOLYMER OF VINYL ALCOHOL AND ALKYLVINYL ETHER IN A PHOTOGRAPHIC LAYER OF A COLOR PHOTOGRAPHIC LIGHT-SENSITIVE ELEMENT, IN PARTICULAR, A COLOR PHOTOGRAPHIC SILVER HALIDE EMULSION HAVING INCORPORATED THEREIN AN OIL-SOLUBLE COUPLER AND AN OILY SOLVENT HAVING A HIGH BOILING POINT, THE SILVER REMOVAL OR SILVER BLEACHING OF DEVELOPED SILVER IN BLEACHING PROCESS AFTER COLOR DEVELOPMENT IS EFFECTIVELY IMPROVED WHEREBY THE COLOR TURBIDITY OF COLORED IMAGES CAN BE REDUCED.
Inventors
- 👤 N Tsuji
- 👤 Y Ono
- 👤 F Nishio
- 👤 H Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3003; G03C7/3005; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; G03C1/81; G03C7/392; G03C7/396
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |