Patent US2841730A successfully refreshed from Google Patents.
US2841730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single crystal electroluminescence
Assignee: General Electric Co
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Filing: 1955-12-05
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Granted: 1958-07-01
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 William W Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:12
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN ELECTROLUMINESCENT CELL COMPRISING A SINGLE CRYSTAL CONSISTING ESSENTIALLY OF AN ACTIVATED PHOSPHOR MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC SULFIDE, ZINC SELENIDE, CADMIUM SULFIDE,S CADMIUM SELENIDE AND MIXTURES THEREOF, AND A PAIR OF ELECTRODES ON OPPOSITELY DISPOSED SURFACES OF SAID CRYSTAL.
Claim 2
Dependent Claim
43 words
AN ELECTROLUMINESCENT CELL COMPRISING A SINGLE CRYSTAL CONSISTING ESSENTIALLY OF AN ACTIVATED PHOSPHOR MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC SULFIDE, ZINC SELENIDE, CADMIUM SULFIDE,S CADMIUM SELENIDE AND MIXTURES THEREOF, AND A PAIR OF ELECTRODES ON OPPOSITELY DISPOSED SURFACES OF SAID CRYSTAL.
References Cited (Backward Citations)
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Cited
US2600579A
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US2684450A
Cited
US2624857A
Cited
US2566349A
Cited
US2721950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |