Patent US3249431A successfully refreshed from Google Patents.
US3249431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of color photographic images
Assignee: Gevaert Photo Producten NV
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Filing: 1961-03-27
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Granted: 1966-05-03
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Jaeken Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:00
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/38; G; G03; G03C; G03C7/00; G03C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A METHOD OF FORMING A COLOR CORRECTED IMAGE IN A PHOTOGRAPHIC ELEMENT HAVING AT LEAST ONE SILVER HALIDE EMULSION LAYER CONTAINING A COLOR COUPLER FOR MAGENTA WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPING AGENT TO FORM BY COLOR DEVELOPMENT A MAGENTA 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, IN WHICH METHOD SAID ELEMENT IS EXPOSED TO SAID IMAGE TO BE PHOTOGRAPHED, DEVELOPED WITH SAID DEVELOPING AGENT AND THEREAFTER TREATED WITH AN OXIDIZING SOLUTION, THE IMPROVEMENT WHEREIN SAID ELEMENT HAS PRESENT THEREIN A MASK FORMING COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
122 words
IN A METHOD OF FORMING A COLOR CORRECTED IMAGE IN A PHOTOGRAPHIC ELEMENT HAVING AT LEAST ONE SILVER HALIDE EMULSION LAYER CONTAINING A COLOR COUPLER FOR MAGENTA WHICH IS REACTIVE WITH THE OXIDATION PRODUCT OF AN AROMATIC AMINO DEVELOPING AGENT TO FORM BY COLOR DEVELOPMENT A MAGENTA 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, IN WHICH METHOD SAID ELEMENT IS EXPOSED TO SAID IMAGE TO BE PHOTOGRAPHED, DEVELOPED WITH SAID DEVELOPING AGENT AND THEREAFTER TREATED WITH AN OXIDIZING SOLUTION, THE IMPROVEMENT WHEREIN SAID ELEMENT HAS PRESENT THEREIN A MASK FORMING COMPOUND HAVING THE FORMULA:
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |