Patent US3749005A successfully refreshed from Google Patents.
US3012884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of colored photographic images
Assignee: Gevaert Photo Producten NV
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Filing: 1957-12-27
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Granted: 1961-12-12
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Expires: 1977-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ramaix Maurice Antoine De
- 👤 Jaeken Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:39
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/46; C07D231/50; C07D231/18; C07D231/20; C07D231/22; C07D231/26; C07D231/48; C07D231/52; G; G03; G03C; G03C7/00; G03C7/18; G03C7/30; G03C7/32; G03C7/34; G03C7/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
METHOD OF FORMING A COLOR CORRECTED IMAGE IN A PHOTOGRAPHIC ELEMENT HAVING SUPERPOSED SILVER HALIDE EMULSION LAYERS SENSITIVE TO DIFFERENT REGIONS OF THE VISIBLE SPECTRUM, AT LEAST ONE OF SAID LAYERS CONTAINING A COLOR COUPLER FOR COLOR DEVELOPMENT, WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPING AGENT TO FORM BY COLOR DEVELOPMENT A PRIMARY DYE IMAGE WHICH ABSORBS A MAJOR PROPORTION OF LIGHT IN ONE REGION OF THE VISIBLE SPECTRUM, AND UNDESIRABLY ABSORBS A MINOR PROPORTION OF LIGHT IN AT LEAST ONE OTHER REGION OF THE VISIBLE SPECTRUM, WHICH METHOD COMPRISES EXPOSING SAID LAYERS TO LIGHT, DEVELOPING AT LEAST SAID ONE LAYER CONTAINING SAID COLOR COUPLER BY COLOR DEVELOPMENT WITH AN AROMATIC AMINO DEVELOPING AGENT, WHEREBY SAID PRIMARY IMAGE IS FORMED IN THE DEVELOPED AREAS BY COUPLING, LEAVING IN THE UNDERVELOPED AREAS OF AT LEAST SAID ONE LAYER RESIDUAL COLOR COUPLER, TREATING SAID PHOTOGRAHIC ELEMENT WITH A SOLUTION CONTAINING A 4-AMINO-5PYRAZOLIEN DERIVATIVES OF THE FORMULA
Claim 2
Dependent Claim
159 words
METHOD OF FORMING A COLOR CORRECTED IMAGE IN A PHOTOGRAPHIC ELEMENT HAVING SUPERPOSED SILVER HALIDE EMULSION LAYERS SENSITIVE TO DIFFERENT REGIONS OF THE VISIBLE SPECTRUM, AT LEAST ONE OF SAID LAYERS CONTAINING A COLOR COUPLER FOR COLOR DEVELOPMENT, WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPING AGENT TO FORM BY COLOR DEVELOPMENT A PRIMARY DYE IMAGE WHICH ABSORBS A MAJOR PROPORTION OF LIGHT IN ONE REGION OF THE VISIBLE SPECTRUM, AND UNDESIRABLY ABSORBS A MINOR PROPORTION OF LIGHT IN AT LEAST ONE OTHER REGION OF THE VISIBLE SPECTRUM, WHICH METHOD COMPRISES EXPOSING SAID LAYERS TO LIGHT, DEVELOPING AT LEAST SAID ONE LAYER CONTAINING SAID COLOR COUPLER BY COLOR DEVELOPMENT WITH AN AROMATIC AMINO DEVELOPING AGENT, WHEREBY SAID PRIMARY IMAGE IS FORMED IN THE DEVELOPED AREAS BY COUPLING, LEAVING IN THE UNDERVELOPED AREAS OF AT LEAST SAID ONE LAYER RESIDUAL COLOR COUPLER, TREATING SAID PHOTOGRAHIC ELEMENT WITH A SOLUTION CONTAINING A 4-AMINO-5PYRAZOLIEN DERIVATIVES OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |