Patent US3161855A successfully refreshed from Google Patents.
US2368287A
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Photographic element and method of making it
Assignee: Ilford Imaging UK Ltd
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Filing: 1942-07-25
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Granted: 1945-01-30
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Expires: 1962-07-25
Abstract
No abstract record available.
Inventors
- 👤 Chilton Leonard Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/38; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31728; Y10T428/31768; Y10T428/31772; Y10T428/31775
Claims Analysis
Total Claims: 0
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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) | 1948-01-30 | 1948-07-31 | 1949-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-30 | 1952-07-31 | 1953-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-30 | 1956-07-31 | 1957-01-30 | $7700.00 | Window Closed / Lapsed |