Patent US2666145A successfully refreshed from Google Patents.
US2666145A
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Luminescent crystalline bodies
Assignee: Union Carbide Corp
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Filing: 1949-06-18
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Granted: 1954-01-12
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Expires: 1969-06-18
Abstract
No abstract record available.
Inventors
- 👤 William G Eversole
- 👤 O'brien Brian
- 👤 Roger H Gillette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:15
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US988230A
Cited
US1565777A
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US2233786A
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US2436182A
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US2448963A
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US2517404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |