US3264133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent phosphors and method for making same
Assignee: Lockheed Martin Corp
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Filing: 1962-05-02
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Granted: 1966-08-02
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Expires: 1982-05-02
Abstract
No abstract record available.
Inventors
- 👤 Brooks William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD FOR MAKING HIGH-BRIGHTNESS ELECTROLUMINESCENT PHOSPHORS WHICH COMPRISES WASHING A PLURALITY OF PHOSPHOR PARTICLES WITH AN ALCOHOLIC SOLUTION INCLUDING ETHYL ALCOHOL AND TITANIUM TETRACHLORIDE, DRYING THE WASHED PHOSPHOR PARTICLES IN AIR, AND HEATING THE AIR-DRIED PHOSPHOR PARTICLES TO A TEMPERATURE BETWEEN 200*C. AND 500*C. RANGE FOR AT LEAST A FIVE MINUTE INTERVAL TO PRODUCE A THIN FILM OF TITANIUM DIOXIDE HAVING HIGH DIELECTRIC PROPERTIES ENCASING THE PHOSPHOR PARTICLE.
Claim 2
Independent Claim
69 words
A METHOD FOR MAKING HIGH-BRIGHTNESS ELECTROLUMINESCENT PHOSPHORS WHICH COMPRISES WASHING A PLURALITY OF PHOSPHOR PARTICLES WITH AN ALCOHOLIC SOLUTION INCLUDING ETHYL ALCOHOL AND TITANIUM TETRACHLORIDE, DRYING THE WASHED PHOSPHOR PARTICLES IN AIR, AND HEATING THE AIR-DRIED PHOSPHOR PARTICLES TO A TEMPERATURE BETWEEN 200*C. AND 500*C. RANGE FOR AT LEAST A FIVE MINUTE INTERVAL TO PRODUCE A THIN FILM OF TITANIUM DIOXIDE HAVING HIGH DIELECTRIC PROPERTIES ENCASING THE PHOSPHOR PARTICLE.
References Cited (Backward Citations)
US2992349A
Cited
US2898229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |