US3002121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: Individual
•
Filing: 1956-04-20
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Granted: 1961-09-26
•
Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Bramley Arthur
- 👤 Bramley Jenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20; G; G01; G01R; G01R13/00; G01R13/40; G01R13/401; G01R13/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN AN ELECTROLUMINESCENT VOLTAGE DEVICE, AN ELECTROLUMINESCENT SEMITRANSPARENT LAYER HAVING A BREAKDOWN VOLTAGE EXCEEDING 30,000 VOLTS PER CENTIMETER, COMPRISING ELECTROLUMINESCENT PHOSPHOR PARTICLES EMBEDDED IN A SEMICONDUCTOR MAKING CONTACT WITH THE PHOSPHOR PARTICLES, THE PHOSPHOR PARTICLES CONSTITUTING BETWEEN 1 AND 50 PERCENT BY WEIGHT OF THE TOTAL OF PHOSPHOR AND SEMICONDUCTOR, AND MEANS FOR APPLYING A VOLTAGE DIFFERENTIAL LESS THAN THE BREAKDOWN VOLTAGE ACROSS THE SEMITRANSPARENT LAYER AND THEREBY PRODUCING LIGHT.
Claim 2
Dependent Claim
70 words
IN AN ELECTROLUMINESCENT VOLTAGE DEVICE, AN ELECTROLUMINESCENT SEMITRANSPARENT LAYER HAVING A BREAKDOWN VOLTAGE EXCEEDING 30,000 VOLTS PER CENTIMETER, COMPRISING ELECTROLUMINESCENT PHOSPHOR PARTICLES EMBEDDED IN A SEMICONDUCTOR MAKING CONTACT WITH THE PHOSPHOR PARTICLES, THE PHOSPHOR PARTICLES CONSTITUTING BETWEEN 1 AND 50 PERCENT BY WEIGHT OF THE TOTAL OF PHOSPHOR AND SEMICONDUCTOR, AND MEANS FOR APPLYING A VOLTAGE DIFFERENTIAL LESS THAN THE BREAKDOWN VOLTAGE ACROSS THE SEMITRANSPARENT LAYER AND THEREBY PRODUCING LIGHT.
References Cited (Backward Citations)
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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) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |