US3076767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing electroluminescent prosphors
Assignee: Verizon Laboratories Inc
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Filing: 1961-06-27
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Granted: 1963-02-05
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Expires: 1981-06-27
Abstract
No abstract record available.
Inventors
- 👤 Faria Sixdeniel
- 👤 Goldberg Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR PRODUCING AN ELECTROLUMINESCENT PHOSPHOR FROM COPPER ACTIVATED-HALIDE COACTIVATED NON-ELECTROLUMINESCENT ZINC SULFIDE COMPRISING THE STEPS OF ETCHING SAID NON-ELECTROLUMINESCENT ZINC SULFIDE WITH A HYDROGEN PEROXIDESOLUTION HAVING A CONCENTRATION IN THE RANGE 3.75-30 PERCENT FOR AN INTERVAL OF 10-60 MINUTES AT A TEMPERATURE RANGE F 60* C.-85*C., MIXING SAID NON-ELECTROLUMINESCENT ZINC SULFIDE WITH AT LAST 1 X 10**5 GRAM ATOMS OF COPPER PER MOLE OF ZINC SULFIDE, AND FIRING SAID MIXTURE IN A TEMPERATURE RANGE OF APPROXIMATELY 750*C. TO 950*C. FOR APPROXIMATELY 40 MINUTES, THE RESULTING ELECTROLUMINESCENT PHOSPHOR HAVING AN EFFICIENCY GREATER THAN THAT OF AN EQUIVALENT UNETCHED PHOSPHOR.
Claim 2
Dependent Claim
100 words
A PROCESS FOR PRODUCING AN ELECTROLUMINESCENT PHOSPHOR FROM COPPER ACTIVATED-HALIDE COACTIVATED NON-ELECTROLUMINESCENT ZINC SULFIDE COMPRISING THE STEPS OF ETCHING SAID NON-ELECTROLUMINESCENT ZINC SULFIDE WITH A HYDROGEN PEROXIDESOLUTION HAVING A CONCENTRATION IN THE RANGE 3.75-30 PERCENT FOR AN INTERVAL OF 10-60 MINUTES AT A TEMPERATURE RANGE F 60* C.-85*C., MIXING SAID NON-ELECTROLUMINESCENT ZINC SULFIDE WITH AT LAST 1 X 10**5 GRAM ATOMS OF COPPER PER MOLE OF ZINC SULFIDE, AND FIRING SAID MIXTURE IN A TEMPERATURE RANGE OF APPROXIMATELY 750*C. TO 950*C. FOR APPROXIMATELY 40 MINUTES, THE RESULTING ELECTROLUMINESCENT PHOSPHOR HAVING AN EFFICIENCY GREATER THAN THAT OF AN EQUIVALENT UNETCHED PHOSPHOR.
References Cited (Backward Citations)
US2743238A
Cited
US2821509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |