US2481476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color yielding photographic elements
Assignee: EIDP Inc
•
Filing: 1945-03-02
•
Granted: 1949-09-06
•
Expires: 1965-03-02
Abstract
No abstract record available.
Inventors
- 👤 Murray Otis Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/327; G03C7/3275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB503752A
Cited
US2169250A
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US2211323A
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US2245218A
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US2310943A
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US2320422A
Cited
GB537256A
Cited
US2282001A
Cited
US2279411A
Cited
US2253078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |