US2694636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive element for color photography
Assignee: Novartis AG
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Filing: 1952-06-27
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Granted: 1954-11-16
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Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Keller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:23
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03C7/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, AT LEAST ONE LIGHT-SENSITIVE GELATINO SILVER HALIDE LAYER THEREON AND, IN CONTACT WITH SAID LAYER, A CYAN DYESTUFF OF THE FORMULA:
Claim 2
Dependent Claim
27 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, AT LEAST ONE LIGHT-SENSITIVE GELATINO SILVER HALIDE LAYER THEREON AND, IN CONTACT WITH SAID LAYER, A CYAN DYESTUFF 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) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |