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Patent US3380926A successfully refreshed from Google Patents.
US3380926A
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Method for preparing a europium-activated yttrium vanadate phosphor
Assignee: RCA Corp
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Filing: 1965-01-18
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Granted: 1968-04-30
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Expires: 1985-01-18
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
C; C01; C01G; C01G31/00; C01G31/006; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7783; C09K11/7794
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD FOR PREPARING A EUROPIUM-ACTIVATED YTTRIUM VANADATE PHOSPHOR COMPRISING: (1) PROVIDING A LOW FLUX CONCENTRATION MIXTURE WHICH UPON HEATING BETWEEN 1150*C AND 1350*C. DOES NOT FORM A MOLTEN FLUID SOLUTION BY MIXING THE FOLLOWING INGREDIENTS IN DRY POWDERED FORM IN THE INDICATED PROPORTIONS:
Claim 2
Independent Claim
44 words
A METHOD FOR PREPARING A EUROPIUM-ACTIVATED YTTRIUM VANADATE PHOSPHOR COMPRISING: (1) PROVIDING A LOW FLUX CONCENTRATION MIXTURE WHICH UPON HEATING BETWEEN 1150*C AND 1350*C. DOES NOT FORM A MOLTEN FLUID SOLUTION BY MIXING THE FOLLOWING INGREDIENTS IN DRY POWDERED FORM IN THE INDICATED PROPORTIONS:
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |