Patent US2728870A successfully refreshed from Google Patents.
US2728870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp
Assignee: GTE Sylvania Inc
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Filing: 1952-09-20
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Granted: 1955-12-27
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Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Gungle Warren Calvin
- 👤 Cleary Robert Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; Y; Y10; Y10S; Y10S116/00; Y10S116/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN ELECTROLUMINESCENT LAMP COMPRISING TWO ELECTRODES AND A LAYER THEREBETWEEN OF ELECTROLUMINESCENT PHOSPHOR PARTICLES EMBEDDED IN A SOLID DIELECTRIC, THE ELECTROLUMINESCENT PHOSPOR PARTICLES BEING ALIGNED IN THE DIRECTION IN WHICH A FIELD WOULD BE PRODUCED BY THE APPLICATION OF VOLTAGE BETWEEN SAID ELECTRODES.
Claim 2
Dependent Claim
43 words
AN ELECTROLUMINESCENT LAMP COMPRISING TWO ELECTRODES AND A LAYER THEREBETWEEN OF ELECTROLUMINESCENT PHOSPHOR PARTICLES EMBEDDED IN A SOLID DIELECTRIC, THE ELECTROLUMINESCENT PHOSPOR PARTICLES BEING ALIGNED IN THE DIRECTION IN WHICH A FIELD WOULD BE PRODUCED BY THE APPLICATION OF VOLTAGE BETWEEN SAID ELECTRODES.
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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |