US2843516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor junction rectifier
Assignee: Siemens Schuckertwerke AG
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Filing: 1956-02-13
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Granted: 1958-07-15
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Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Herlet Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:54
CPC Classifications
H; H10; H10D; H10D8/00; H10D8/50; H10D1/00; H10D1/40; H10D48/00; H10D48/30; H10D48/38; H10D62/00; H10D62/10; H10D62/60; H10D62/80; H10D62/83; H10D62/834; H10D62/85; H10D62/854; H10D99/00; H10F; H10F30/00; H10F30/20; H10P; H10P32/00; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A P-N JUNCTION RECTIFIER, COMPRISING A SEMICONDUCTOR CRYSTAL HAVING A DONOR-DOPED N-CONDUCTIVE OUTER ZONE, AN ACCEPTOR-DOPED P-CONDUCTIVE OUTER ZONE, AND A MIDDLE ZONE LOCATED BETWEEN, AND AREA-JOINED WITH, SAID OUTER ZONES AND HAVING LESSER IMPURITY-CENTER DEFECT CONCENTRATION THAN SAID OUTER ZONES, THE DIMENSION OF SAID MIDDLE ZONE FROM ITS CENTER TO EITHER ONE OF SAID OUTER ZONES BEING AT MOST TWICE THE HIGH-VOLTAGE DIFFUSION LENGTH OF SAID SEMICONDUCTOR CRYSTAL IN SAID MIDDLE ZONE, SAID DEFECT CONCENTRATION OF SAID MIDDLE ZONE BEING BELOW 10**15 CM.-3, AND SAID OUTER ZONES HAVING AN IMPURITY-CENTER DEFECT CONCENTRATION SMALLER BY NOT MORE THAN TWO POWERS OF TEN THAN THE CONCENTRATION VALUE CORRESPONDING TO THE CRITICAL BOUNDARY FIELD STRENGTH.
Claim 2
Dependent Claim
113 words
A P-N JUNCTION RECTIFIER, COMPRISING A SEMICONDUCTOR CRYSTAL HAVING A DONOR-DOPED N-CONDUCTIVE OUTER ZONE, AN ACCEPTOR-DOPED P-CONDUCTIVE OUTER ZONE, AND A MIDDLE ZONE LOCATED BETWEEN, AND AREA-JOINED WITH, SAID OUTER ZONES AND HAVING LESSER IMPURITY-CENTER DEFECT CONCENTRATION THAN SAID OUTER ZONES, THE DIMENSION OF SAID MIDDLE ZONE FROM ITS CENTER TO EITHER ONE OF SAID OUTER ZONES BEING AT MOST TWICE THE HIGH-VOLTAGE DIFFUSION LENGTH OF SAID SEMICONDUCTOR CRYSTAL IN SAID MIDDLE ZONE, SAID DEFECT CONCENTRATION OF SAID MIDDLE ZONE BEING BELOW 10**15 CM.-3, AND SAID OUTER ZONES HAVING AN IMPURITY-CENTER DEFECT CONCENTRATION SMALLER BY NOT MORE THAN TWO POWERS OF TEN THAN THE CONCENTRATION VALUE CORRESPONDING TO THE CRITICAL BOUNDARY FIELD STRENGTH.
References Cited (Backward Citations)
US2708646A
Cited
US2767358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |