US2840741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent cell
Assignee: Westinghouse Electric Corp
•
Filing: 1954-11-01
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Granted: 1958-06-24
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Lehmann Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:10
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN ELECTROLUMINISCENT CELL COMPRISING, TWO SUBSTANTIALLY PARALLEL ELECTRODES, AT LEAST ONE OF WHICH IS LIGHTTRANSMITTING AND ELECTRIC FIELD-RESPONSIVE PHOSPHOR PARTICLES EMBEDDED IN DIELECTRIC MATERIAL BEING SAID ELECTRODES, SAID DIELECTRIC MATERIAL BEING SOLID AT NORMAL ROOM TEMPERATURES, SAID PHOSPHOR PARTICLES BEING ALIGNED IN GENERALLY RANDOM FASHION IN A PLURALITY OF SUBSTANTIALLY STRAIGHT-LINE PARTICLE GROUPINGS, ADJACENT PHOSPHOR PARTICLES IN EACH OF SAID GROUPINGS CONTACTING ONE ANOTHER, AND EACH OF SAID GROUPINGS BEING ORIENTED SUBSTANTIALLY PERPENDICULAR TO SAID ELECTRODES.
Claim 2
Dependent Claim
76 words
AN ELECTROLUMINISCENT CELL COMPRISING, TWO SUBSTANTIALLY PARALLEL ELECTRODES, AT LEAST ONE OF WHICH IS LIGHTTRANSMITTING AND ELECTRIC FIELD-RESPONSIVE PHOSPHOR PARTICLES EMBEDDED IN DIELECTRIC MATERIAL BEING SAID ELECTRODES, SAID DIELECTRIC MATERIAL BEING SOLID AT NORMAL ROOM TEMPERATURES, SAID PHOSPHOR PARTICLES BEING ALIGNED IN GENERALLY RANDOM FASHION IN A PLURALITY OF SUBSTANTIALLY STRAIGHT-LINE PARTICLE GROUPINGS, ADJACENT PHOSPHOR PARTICLES IN EACH OF SAID GROUPINGS CONTACTING ONE ANOTHER, AND EACH OF SAID GROUPINGS BEING ORIENTED SUBSTANTIALLY PERPENDICULAR TO SAID ELECTRODES.
References Cited (Backward Citations)
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Cited
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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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |