US3586857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor electron detector
Assignee: Siemens AG
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Filing: 1969-04-21
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Granted: 1971-06-22
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Expires: 1989-04-21
Abstract
Abstract An electron detector particularly adapted to sense low energy radiation, includes a semiconductor crystal having a face directly exposed to the electrons to be detected and provided over its area with an electrode constituted by a light impervious, but electron pervious layer. The crystal further has another face, also carrying an electrode. Within the crystal there is an active zone which, generated by a voltage applied by the electrodes in a blocking direction, extends through the entire crystal between the electrodes.
Inventors
- 👤 Peter Glasow
- 👤 Prabuddha Banerjee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:32
CPC Classifications
H; H10; H10F; H10F99/00; H10F30/00; H10F30/20; H10F30/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
29 words
An improvement as defined in claim 1, wherein said semiconductor detector is formed of a silicon crystal coated on one face with a gold layer constituting said blocking layer.
Claim 2
Dependent Claim
20 words
An improvement as defined in claim 1, wherein said light impervious, but electron pervious metal layer is formed of aluminum.
Claim 3
Dependent Claim
47 words
An improvement as defined in claim 1, wherein said semiconductor detector is framed by an insulating material held in a housing in such a manner that said blocking layer is directed inwardly, and said light impervious, but electron pervious metal layer is directed outwardly of said housing.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |