US3822248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-hydroxy-4-(pentafluorophenoxy)-n-(beta-(4-(alpha-(2,4-di-t-amylphenoxy)acetamido)phenyl)ethyl)-2-naphthamide
Assignee: Eastman Kodak Co
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Filing: 1971-09-27
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Granted: 1974-07-02
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Expires: 1991-09-27
Abstract
Abstract COUPLERS CONTAINING AT LEAST ONE 4-HYDROXY-3-CARBAMYL-1-NAPHTHYL GROUP WHEREIN THE HYDROGEN ATOM OR THE ONE POSITION OF SAID NAPHTHYL GROUP HAS BEEN REPLACED WITH AN ARYLOXY GROUP ARE USED ADVANTAGEOUSLY IN COLOR PHOTOGRAPHY TO FORM CYAN DYE IMAGES. THE IMMEDIATE COUPLERS THAT ARE DIFFUSIBLE ARE USED TO ADVANTAGE IN CYAN COLOR DEVELOPER SOLUTIONS WHILE THE IMMEDIATE COUPLERS THAT ARE NON-DIFFUSIBLE ARE ADVANTAGEOUSLY INCORPORATED IN CYAN DYE-FORMING PHOTOGRAPHIC EMULSION LAYERS.
Inventors
- 👤 A Loria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |