Patent US2447322A successfully refreshed from Google Patents.
US2447322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared-responsive phosphors
Assignee: General Electric Co
•
Filing: 1943-11-04
•
Granted: 1948-08-17
•
Expires: 1963-11-04
Abstract
No abstract record available.
Inventors
- 👤 Gorton R Fonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:08
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/66; C09K11/661; C09K11/58; C09K11/582; C09K11/584; C09K11/668; C09K11/77; C09K11/7701; C09K11/7702
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |