US3590253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state photoconductor-electroluminescent image intensifier
Assignee: Westinghouse Electric Corp
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Filing: 1969-06-30
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Granted: 1971-06-29
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Expires: 1989-06-30
Abstract
Abstract A solid-state photoconductor-electroluminescent intensifier having improved photoconductive layer construction and innerconnection with the electroluminescent layer.
Inventors
- 👤 Michael A Novice
- 👤 Zolian P J Szepesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/10; H05; H05B; H05B33/00; H05B33/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
The device set forth in claim 1 in which said second layer has a higher donor concentration than said first layer to provide the ohmic contact to said first layer.
Claim 2
Dependent Claim
19 words
The device set forth in claim 1 in which the thickness of said second layer is about 300 nanometers.
Claim 3
Dependent Claim
29 words
The device set forth in claim 1 in which the semiconductive material of said second layer is selected from the group of materials consisting of germanium and cadmium selenide.
Claim 4
Dependent Claim
30 words
The device set forth in claim 1 in which the semiconductive material of said first layer is selected from the group of materials consisting of cadmium sulfide and cadmium selenide.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |