US2780600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead-and manganese-activated cadmium-sodium fluorophosphate phosphor
Assignee: Westinghouse Electric Corp
•
Filing: 1955-01-24
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Granted: 1957-02-05
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Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Wollentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:36
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/70; C09K11/72; C09K11/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A LIMINESCENT MATERIAL HAVING THE GENERAL FORMULATION 3CD3(PO4)2''XNAFYMN:ZPB, WHERE X IS NOT LESS THAN 2.5 MOLES AND NOT MORE THAN 5.5 MOLES, Y IS NOT LESS THAN 0.1% BY WEIGHT AND NOT MORE THAN 1% BY WEIGHT OF CADMIUM ORTHOPHOSPHATE, Z IS NOT LESS THAN 0.5 AND NOT MORE THAN 7% BY WEIGHT OF CADMIUM ORTHOPHOSPHATE, AND THERE IS CHEMICALLY COMBINED WITH SAID LUMINESCENT MATERIAL FROM 1 TO 50 MOLAR PERCENT OF EXCESS P2O5 OVER THE TOTAL MOLES OF CALMIUN ORTHOPHOSPHATE.
Claim 2
Dependent Claim
81 words
A LIMINESCENT MATERIAL HAVING THE GENERAL FORMULATION 3CD3(PO4)2''XNAFYMN:ZPB, WHERE X IS NOT LESS THAN 2.5 MOLES AND NOT MORE THAN 5.5 MOLES, Y IS NOT LESS THAN 0.1% BY WEIGHT AND NOT MORE THAN 1% BY WEIGHT OF CADMIUM ORTHOPHOSPHATE, Z IS NOT LESS THAN 0.5 AND NOT MORE THAN 7% BY WEIGHT OF CADMIUM ORTHOPHOSPHATE, AND THERE IS CHEMICALLY COMBINED WITH SAID LUMINESCENT MATERIAL FROM 1 TO 50 MOLAR PERCENT OF EXCESS P2O5 OVER THE TOTAL MOLES OF CALMIUN ORTHOPHOSPHATE.
References Cited (Backward Citations)
US2214643A
Cited
US2476676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |