Patent US3060959A successfully refreshed from Google Patents.
Patent US2383972A successfully refreshed from Google Patents.
Patent US2481476A successfully refreshed from Google Patents.
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 21:40
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/327; G03C7/3275
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB503752A
Cited
US2169250A
Cited
US2211323A
Cited
US2245218A
Cited
US2310943A
Cited
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 |