Patent US3615225A successfully refreshed from Google Patents.
US3615225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic material
Assignee: Agfa Gevaert AG
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Filing: 1968-12-03
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Granted: 1971-10-26
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Expires: 1988-12-03
Abstract
Abstract Light-sensitive photographic material containing at least one silver halide emulsion layer which contains an effective amount of a colored cyan-forming coupler that has an absorption maximum of between 460 Mu to about 510 Mu .
Inventors
- 👤 Rigobert Otto
- 👤 Hans-Heinrich Credner
- 👤 Arthur Henri De Cat
- 👤 Walter Puschel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
Light-sensitive photographic material according to claim 1, the silver halide emulsion layer of which contains a cyan-forming coupler of the following formula:
Claim 2
Dependent Claim
22 words
Light-sensitive photographic material according to claim 1, the silver halide emulsion layer of which contains a cyan-forming coupler of the following formula:
References Cited (Backward Citations)
GB840731A
Cited
US3034892A
Cited
GB939242A
Cited
US3148062A
Cited
US3386830A
Cited
GB1088532A
Cited
US3481741A
Cited
GB1091984A
Cited
US3459552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |