US3725072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic light-sensitive materials containing a novel yellow-forming coupler
Assignee: Fujifilm Holdings Corp
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Filing: 1970-10-19
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Granted: 1973-04-03
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Expires: 1990-10-19
Abstract
Abstract A LIGHT-SENSITIVE MATERIAL FOR PRODUCING A COLORED IMAGE COMPRISING A SUPPORT AND A SILVER-HALIDE EMULSION LAYER CONTAINING A YELLOW-FORMING COUPLER HAVING THE FORMULA: 1-((4-X,2-W-PHENYL)-CO-CH(-Y)-CO-NH-),2-Z,5-(R-OOC-)- BENZENE WHEREIN R REPRESENTS AN ALIPHATIC RADICAL CONTAINING FROM 8 TO 20 CARBON ATOMS, W AND X EACH REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM AND A LOWER ALKOXY GROUP, WHEREIN AT LEAST ONE OF W AND X REPRESENTS AN ALKOXY GROUP, Y REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM AND A HALOGEN ATOM, AND Z REPRESENTS A HALOGEN ATOM, AND PROCESS FOR PREPARING SAME IS DISCLOSED.
Inventors
- 👤 Y Oishi
- 👤 K Nakazyo
- 👤 M Yoshida
- 👤 M Tsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:51
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/362; G03C1/00; G03C1/76; G03C1/815; G03C1/8155
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |