US2622026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element and tinted film base
Assignee: Eastman Kodak Co
•
Filing: 1951-10-20
•
Granted: 1952-12-16
•
Expires: 1971-10-20
Abstract
No abstract record available.
Inventors
- 👤 Clarence S Hunter
- 👤 Fred W Hoyt
- 👤 Gale F Nadeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PHOTOGRAPHIC ELEMENT COMPRISING AT LEAST ONE PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER AND A CELLULOSE ESTER LAYER CONTAINING A RED DYE SELECTED FROM THOSE OF THE MONOAZO DYE SERIES CONTAINING A DI-HYDROXYETHYL)AMINOPHENYLAZOPHENYL GROUP AND A CYAN DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING FORMULAS:
Claim 2
Dependent Claim
45 words
A PHOTOGRAPHIC ELEMENT COMPRISING AT LEAST ONE PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER AND A CELLULOSE ESTER LAYER CONTAINING A RED DYE SELECTED FROM THOSE OF THE MONOAZO DYE SERIES CONTAINING A DI-HYDROXYETHYL)AMINOPHENYLAZOPHENYL GROUP AND A CYAN DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING FORMULAS:
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |