Patent US1859224A successfully refreshed from Google Patents.
US3093594A
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Method of making halophosphate phosphors
Assignee: GTE Sylvania Inc
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Filing: 1958-12-10
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Granted: 1963-06-11
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Expires: 1978-12-10
Abstract
No abstract record available.
Inventors
- 👤 Homer Horace Horalan
- 👤 Butler Keith Huestis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:19
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/75; C09K11/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF MAKING A HALOPHOSPHATE PHOSPHOR, SAID METHOD COMPRISING PREHEATED AT A TEMPERATURE BETWEEN ABOUT 1000*F. AND 1600*F. THE MIXTURE OF MATERIALS NECESSARY TO MAKE THE PHOSPHOR, SAID PREHEATING BEING AT A TEMPERATURE BELOW THAT AT WHICH THE MATERIALS REACT WITH EACH OTHER THEN HEATING THE RESULTANT MIXTURE OF MATERIALS AT A TEMPERATURE BETWEEN 1900*F. AND 2150*F. AND THEN COOLING THE PHOSPHOR, AT A TEMPERATURE BELOW ABOUT 1000*F., THE PREHEATING, HEATING AND COOLING BEING IN AN ATMOSPHERE OF GAS INERT WITH RESPECT TO THE MATERIALS USED.
Claim 2
Independent Claim
87 words
THE METHOD OF MAKING A HALOPHOSPHATE PHOSPHOR, SAID METHOD COMPRISING PREHEATED AT A TEMPERATURE BETWEEN ABOUT 1000*F. AND 1600*F. THE MIXTURE OF MATERIALS NECESSARY TO MAKE THE PHOSPHOR, SAID PREHEATING BEING AT A TEMPERATURE BELOW THAT AT WHICH THE MATERIALS REACT WITH EACH OTHER THEN HEATING THE RESULTANT MIXTURE OF MATERIALS AT A TEMPERATURE BETWEEN 1900*F. AND 2150*F. AND THEN COOLING THE PHOSPHOR, AT A TEMPERATURE BELOW ABOUT 1000*F., THE PREHEATING, HEATING AND COOLING BEING IN AN ATMOSPHERE OF GAS INERT WITH RESPECT TO THE MATERIALS USED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |