US2763549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False-color or false-sensitized photographic film containing colored couplers
Assignee: Eastman Kodak Co
•
Filing: 1951-11-03
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Granted: 1956-09-18
•
Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Wesley T Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB375338A
Cited
US2183393A
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US2231685A
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US2193931A
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US2306410A
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US2224329A
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US2230590A
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US2434272A
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US2449966A
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US2435616A
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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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |