US2999070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blue halophosphate phosphor
Assignee: Westinghouse Electric Corp
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Filing: 1954-03-01
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Granted: 1961-09-05
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Henry W Rimbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/0855; C09K11/0861; C09K11/0866
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A BLUE HALOPHOSPHATE PHOSPHOR CONSISTING ESSENTIALLY OF A MATRIX OF HALOPHOSPHATE OF ALKALINE-EARTH METAL ACTIVATED BY FROM 0.3% TO 2.0% BY WEIGHT OF SB, WHEREIN THE HALOGEN CONSISTS OF MIXTURES OF FLUORINE AND CHLORINE, AND THE ALKALINE-EARTH METAL IS ONE OF THE GROUP CONSISTING OF CALCIUM AND MIXTURES OF CALCIUM AND STRONTIUM, THE RATIO OF (CL2+F2)/2P BEING FROM 0.79/3.00 TO 0.86/3.00, THE RATIO OF (CA+SR)/2P BEING FROM 9.3/3.00 TO 9.5/3.00, THE RATIO OF CL/F BEING FROM 0.210/1.00 TO 0.143/1.00, AND THE RATIO OF SR/CA BEING FROM 0 TO 0.200/1.00.
Claim 2
Dependent Claim
89 words
A BLUE HALOPHOSPHATE PHOSPHOR CONSISTING ESSENTIALLY OF A MATRIX OF HALOPHOSPHATE OF ALKALINE-EARTH METAL ACTIVATED BY FROM 0.3% TO 2.0% BY WEIGHT OF SB, WHEREIN THE HALOGEN CONSISTS OF MIXTURES OF FLUORINE AND CHLORINE, AND THE ALKALINE-EARTH METAL IS ONE OF THE GROUP CONSISTING OF CALCIUM AND MIXTURES OF CALCIUM AND STRONTIUM, THE RATIO OF (CL2+F2)/2P BEING FROM 0.79/3.00 TO 0.86/3.00, THE RATIO OF (CA+SR)/2P BEING FROM 9.3/3.00 TO 9.5/3.00, THE RATIO OF CL/F BEING FROM 0.210/1.00 TO 0.143/1.00, AND THE RATIO OF SR/CA BEING FROM 0 TO 0.200/1.00.
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |