US2765281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium pyrophosphate phosphor
Assignee: General Electric Co
•
Filing: 1953-06-30
•
Granted: 1956-10-02
•
Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Robert E Chrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:09
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/7464; C09K11/7471
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A PHOSPHOR CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
6 words
A PHOSPHOR CORRESPONDING TO THE FORMULA
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |