Patent US2931915A successfully refreshed from Google Patents.
US2931915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: GTE Sylvania Inc
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Filing: 1957-02-25
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Granted: 1960-04-05
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Theodore Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:58
CPC Classifications
H; H03; H03F; H03F17/00; H05; H05B; H05B33/00; H05B33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ELECTROLUMINESCENT LIGHT AMPLIFIER COMPRISING A HOMOGENEOUS ELECTROLUMINESCENT LAYER, A PHOTOCONDUCTIVE LAYER, ONE SIDE OF SAID PHOTOCONDUCTIVE LAYER BEING IN ELECTRICAL CONTACT WITH ONE SIDE OF SAID HOMOGENEOUS LAYER, A HETEROGENEOUS ELECTROLUMINESCENT LAYER, AND FIRST, SECOND, AND THIRD ELECTRICALLY CONDUCTIVE FILMS, SAID FIRST FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID HOMOGENEOUS LAYER, SAID SECOND FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID PHOTOCONDUCTIVE LAYER AND ONE SIDE OF SAID HETEROGENEOUS LAYER, SAID THIRD FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID HETEROGENEOUS LAYER.
Claim 2
Dependent Claim
93 words
AN ELECTROLUMINESCENT LIGHT AMPLIFIER COMPRISING A HOMOGENEOUS ELECTROLUMINESCENT LAYER, A PHOTOCONDUCTIVE LAYER, ONE SIDE OF SAID PHOTOCONDUCTIVE LAYER BEING IN ELECTRICAL CONTACT WITH ONE SIDE OF SAID HOMOGENEOUS LAYER, A HETEROGENEOUS ELECTROLUMINESCENT LAYER, AND FIRST, SECOND, AND THIRD ELECTRICALLY CONDUCTIVE FILMS, SAID FIRST FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID HOMOGENEOUS LAYER, SAID SECOND FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID PHOTOCONDUCTIVE LAYER AND ONE SIDE OF SAID HETEROGENEOUS LAYER, SAID THIRD FILM BEING IN ELECTRICAL CONTACT WITH THE OTHER SIDE OF SAID HETEROGENEOUS LAYER.
References Cited (Backward Citations)
US2594740A
Cited
US2791723A
Cited
US2835822A
Cited
US2816236A
Cited
US2874308A
Cited
US2915641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |