US3197664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent devices and an improved dielectric media for such electroluminescent devices
Assignee: GTE Sylvania Inc
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Filing: 1961-03-09
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Granted: 1965-07-27
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Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Sentementes
- 👤 Koury Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
39 words
AN ELECTROLUMINESCENT DEVICE COMPRISING: A FIRST ELECTRODE, A SUPERPOSED SECOND ELECTRODE, AND A LAYER OF LIGHT-EMITTING MATERIAL BETWEEN SAID FIRST AND SECOND ELECTRODES COMPRISING AN ELECTROLUMINESCENT PHOSPHOR EMBEDDED IN CYANOETHYCELLULOSE HAVING A DEGREE OF SUBSTITUTION OF 2.3 TO 2.5.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |