Patent US3761270A successfully refreshed from Google Patents.
US3761270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element composition and process
Assignee: Eastman Kodak Co
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Filing: 1971-09-27
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Granted: 1973-09-25
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Expires: 1991-09-27
Abstract
Abstract IN A PHOTOTHERMOGRAPHIC ELEMENT, COMPOSITION OR PROCESS FOR PRODUCING DEVELOPED IMAGES IN COLOR EMPLOYING PROCESSING WITH HEAT, A COMBINATION OF (A) A COLOR-FORMING COUPLER, (B) PHOTOSENSITIVE SILVER HALIDE, (C) AN OXIDATION-REDUCTION IMAGE-FORMING COMBINATION CONTAINING (I) SILVER BENZOTRIAZOLE, WITH (II) AN AMINOPHENOL REDUCING AGENT, AND (D) A BASE-RELEASE AGENT, PROVIDE IMPROVED COLOR IMAGES. AFTER EXPOSURE, A COLOR IMAGE CAN BE DEVELOPED BY HEATING A PHOTOGRAPHIC ELEMENT CONTAINING THIS COMBINATION. ADDENDA EMPLOYED IN PHOTOSENSITIVE AND THERMOSENSITIVE MATERIALS FOR PROCESSING WITH HEAT CAN BE EMPLOYED WITH THIS COMBINATION.
Inventors
- 👤 Mauriac R De
- 👤 R Landholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; G03C1/49854
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |