US3061432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrazolino benzimidazole color coupler
Assignee: Agfa Gevaert NV
•
Filing: 1959-06-09
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Granted: 1962-10-30
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Expires: 1979-06-09
Abstract
No abstract record available.
Inventors
- 👤 Menzel Karl-Heinz
- 👤 Wahl Ottmar
- 👤 Pelz Willibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:54
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C09; C09B; C09B29/00; C09B29/24; C09B29/28; C09B29/30; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/381; G03C7/382; G03C7/3825; G03C7/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE PRODUCTION OF COLOR PHOTOGRAPHIC IMAGES WHEREIN AN EXPOSED SILVER HALIDE EMULSION LAYER IS DEVELOPED WITH A COLOR-FORMING DEVELOPER SOLUTION IN THE PRESENCE OF A COLOR COUPLER; SAID COLOR COUPLER BEING A 1,5-PYRAZOLINO-BENZIMIDAZOLE-(1'',2'') IN WHICH THE CARBON ATOM IN THE 4-POSITION OF THE PYRAZOLINO RING IS CAPABLE OF REACTING WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPER TO FORM A DYESTUFF.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE PRODUCTION OF COLOR PHOTOGRAPHIC IMAGES WHEREIN AN EXPOSED SILVER HALIDE EMULSION LAYER IS DEVELOPED WITH A COLOR-FORMING DEVELOPER SOLUTION IN THE PRESENCE OF A COLOR COUPLER; SAID COLOR COUPLER BEING A 1,5-PYRAZOLINO-BENZIMIDAZOLE-(1'',2'') IN WHICH THE CARBON ATOM IN THE 4-POSITION OF THE PYRAZOLINO RING IS CAPABLE OF REACTING WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPER TO FORM A DYESTUFF.
References Cited (Backward Citations)
BE572971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |