US2488733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline earth halophosphate phosphors
Assignee: General Electric Co
•
Filing: 1947-07-16
•
Granted: 1949-11-22
•
Expires: 1967-07-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Mckeag
- 👤 Peter W Ranby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/46; C01F; C01F11/00; C01F11/20; C01F11/22; C09; C09K; C09K11/00; C09K11/08; C09K11/0855; C09K11/0861; C09K11/0866
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2226407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |