US2944177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent cell and method of making the same
Assignee: General Electric Co
•
Filing: 1958-04-28
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Granted: 1960-07-05
•
Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 William W Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ELECTROLUMINESCENT CELL EXHIBITING IMPROVED MAINTENANCE CHARACTERISTICS AND COMPRISING, A LAYER OF NON-VITREOUS DIELECTRIC MATERIAL HAVING SUSPENDED THEREIN A PLURALITY OF DISCREET SPACED GLASS PARTICLES CONTAINING PARTICLES OF AN ELECTROLUMINESCENT PHOSPHOR, AND A PAIR OF ELECTRICALLY CONDUCTIVE LAYERS, ONE OF WHICH IS LIGHT TRANSMISSIVE, CONTACTING DIFFERENT SURFACE PORTIONS OF SAID DIELECTRIC LAYER.
Claim 2
Dependent Claim
52 words
AN ELECTROLUMINESCENT CELL EXHIBITING IMPROVED MAINTENANCE CHARACTERISTICS AND COMPRISING, A LAYER OF NON-VITREOUS DIELECTRIC MATERIAL HAVING SUSPENDED THEREIN A PLURALITY OF DISCREET SPACED GLASS PARTICLES CONTAINING PARTICLES OF AN ELECTROLUMINESCENT PHOSPHOR, AND A PAIR OF ELECTRICALLY CONDUCTIVE LAYERS, ONE OF WHICH IS LIGHT TRANSMISSIVE, CONTACTING DIFFERENT SURFACE PORTIONS OF SAID DIELECTRIC LAYER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |