Patent US3702815A successfully refreshed from Google Patents.
Patent US3124539A successfully refreshed from Google Patents.
US3124539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wavelength
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/75; C09K11/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF TREATING A CALCIUM HALOPHOSPHATE PHOSPHOR ACTIVATED WITH ANTIMONY AND MANGANESE AND HAVING THE APPROXIMATE FORMULA CA5(PO4)3(CL,F):SB,MN WHEREIN CL IS NOT LESS THAN 0.02 MOLE AND F IS NOT MORE THAN 0.95 MOLE AND WHEREIN SB IS IN THE RANGE OF 0.5% TO 1.5% BY WEIGHT AND MN IS IN THE RANGE OF 0.5% TO 3.0% BY WEIGHT, IN ORDER TO INCREASE ITS BRIGHTNESS AND RESISTANCE TO DEPRECIATION UNDER IRRADIATION, WHICH COMPRISES HEATING THE PHOSPHOR INTO THE TEMPERATURE RANGE OF 800*C. TO 1200*C., AND THEN QUENCHING IT TO A TEMPERATURE LESS THAN 400*C. IN NOT MORE THAN APPROXIMATELY 1 MINUTE.
Claim 2
Independent Claim
102 words
THE METHOD OF TREATING A CALCIUM HALOPHOSPHATE PHOSPHOR ACTIVATED WITH ANTIMONY AND MANGANESE AND HAVING THE APPROXIMATE FORMULA CA5(PO4)3(CL,F):SB,MN WHEREIN CL IS NOT LESS THAN 0.02 MOLE AND F IS NOT MORE THAN 0.95 MOLE AND WHEREIN SB IS IN THE RANGE OF 0.5% TO 1.5% BY WEIGHT AND MN IS IN THE RANGE OF 0.5% TO 3.0% BY WEIGHT, IN ORDER TO INCREASE ITS BRIGHTNESS AND RESISTANCE TO DEPRECIATION UNDER IRRADIATION, WHICH COMPRISES HEATING THE PHOSPHOR INTO THE TEMPERATURE RANGE OF 800*C. TO 1200*C., AND THEN QUENCHING IT TO A TEMPERATURE LESS THAN 400*C. IN NOT MORE THAN APPROXIMATELY 1 MINUTE.
References Cited (Backward Citations)
US2976249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |