US3244520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color couplers for photographic color images
Assignee: Agfa Gevaert NV
•
Filing: 1962-06-05
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Granted: 1966-04-05
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Schulte Walter
- 👤 Meckl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:58
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR THE PRODUCTION OF CYAN-COLORED PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING A PHOTOGRAPHIC MATERIAL COMPRISING AN EXPOSED SILVER HALIDE EMULSION LAYER CONTAINING A CYAN COUPLER THAT IS CAPABLE OF DEVELOPING A CYAN-COLORED IMAGE UPON REACTION WITH THE OXIDATION PRODUCT OF A PRIMARY AMINE COLOR-FORMING DEVELOPER, BLEACHING AND FIXING THE DEVELOPED MATERIAL, SAID CYAN COUPLER HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
60 words
A PROCESS FOR THE PRODUCTION OF CYAN-COLORED PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING A PHOTOGRAPHIC MATERIAL COMPRISING AN EXPOSED SILVER HALIDE EMULSION LAYER CONTAINING A CYAN COUPLER THAT IS CAPABLE OF DEVELOPING A CYAN-COLORED IMAGE UPON REACTION WITH THE OXIDATION PRODUCT OF A PRIMARY AMINE COLOR-FORMING DEVELOPER, BLEACHING AND FIXING THE DEVELOPED MATERIAL, SAID CYAN COUPLER HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2324832A
Cited
US2472910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |