Patent US3672897A successfully refreshed from Google Patents.
US3672897A
Expired / Lapsed
US
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Silver halide color photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1969-09-16
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Granted: 1972-06-27
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Expires: 1989-09-16
Abstract
Abstract A COLOR PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A SUPPORT HAVING COATED THEREON A RED-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A CYAN-COLOR FORMING COUPLER, A GREEN-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A MAGENTA-COLOR FORMING COUPLER, AND A BLUE-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A YELLOW FORMING COUPLER AND A COMPOUND REPRESENTED BY THE FORMULA R-N<(-Z-C(=C<(-Q-C(=O)-))-) WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SULFOALKYL GROUP AND A SULFOARALKYL GROUP, AND Z AND Q ARE EACH AN ATOMIC GROUP NECESSARY TO COMPLETE A HETEROCYCLIC NUCLEUS.
Inventors
- 👤 Akira Sato
- 👤 Hirozo Ueda
- 👤 Yoshiaki Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:30
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39292; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/22
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |