Patent US3602721A successfully refreshed from Google Patents.
US3602721A
Expired / Lapsed
US
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Photoelectric device with enhanced photoconductive sensitivity and storage effect of input radiation
Assignee: Panasonic Corp
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Filing: 1968-11-14
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Granted: 1971-08-31
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Expires: 1988-11-14
Abstract
Abstract A photoelectric device having a photoconductor element consisting of cadmium selenide, cadmium sulfide or a solid solution of cadmium sulfide and cadmium selenide. In the device, the photoconductor element is submerged in silicone oil and cooled down to a low temperature so that it can respond to a radiation input with an improved photoconductive sensitivity.
Inventors
- 👤 Tadao Nakamura
- 👤 Shigeaki Nakamura
- 👤 Tadao Kohashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:32
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; H; H10; H10F; H10F77/00; H10F77/60; Y; Y10; Y10S; Y10S257/00; Y10S257/93
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
The photoelectric device according to claim 1, wherein said photoconductor element is selected from the group consisting of cadmium selenide, cadmium sulfide and a solid solution of cadmium sulfide and cadmium selenide.
Claim 2
Dependent Claim
21 words
The photoelectric device according to claim 1, wherein said specified temperature value of the element is approximately -20* C. or lower.
Claim 3
Dependent Claim
19 words
The photoelectric device according to claim 1, further comprising means creating a flow of silicone oil through said container.
Claim 4
Dependent Claim
17 words
The photoelectric device according to claim 4, wherein said flow causing means includes a fluid circulating means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |