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US2592261A
Expired / Lapsed
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Halophosphate phosphors
Assignee: General Electric Co
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Filing: 1950-08-11
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Granted: 1952-04-08
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Expires: 1970-08-11
Abstract
No abstract record available.
Inventors
- 👤 Gorton R Fonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/75; C09K11/76
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A LUMINESCENT MATERIAL HAVING THE FORMULA 3CA3(PO4)2.VCDX2 WHEREIN V IS A NUMBER NO GREATER THAN 1 AND X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE, SAID MATERIAL CONTAINING ACTIVATING PROPORTIONS OF ANTIMONY AND MANGANESE CORRESPONDING TO 1-3% OF ANTIMONY BY WEIGHT OF THE HALOPHOSPHATE AND 2% MANGANESE BY WEIGHT OF THE HALOPHOSPHATE ADDED TO THE MATERIALS INITIALLY PRESENT IN THE BATCH MIXTURE.
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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |