US3214622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp with high dielectric constant thermoplastic phosphor-bearing matrix
Assignee: Wyeth Holdings LLC
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Filing: 1962-04-27
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Granted: 1965-10-26
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Errico Michael J D
- 👤 Edward J Fetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:37
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C09; C09K; C09K11/00; C09K11/02; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/447; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; H01G4/20; H01G4/22; H01G4/221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
AN ELECTROLUMINESCENT DEVICE COMPRISING A LIGHTCONDUCTIVE LAYER, ONE SURFACE OF WHICH HAS UNITARILY EMBEDDED THEREIN AN ELECTRICALLY CONDUCTIVE LAYER, AND SUPERIMPOSED ON SAID ELECTRICALLY CONDUCTIVE LAYER, A LAYER COMPRISING A PHOSPHOR-BEARING DIELECTRIC MATRIX, AND SUPERIMPOSED ON SAID MATRIX A SECOND ELECTRICALLY CONDUCTIVE LAYER, SAID MATRIX COMPRISING A POLYMER OF A COMPOUND HAVING THE FORMULA
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |