Patent US2946709A successfully refreshed from Google Patents.
US2946709A
Expired / Lapsed
US
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Power transistor with monocrystalline semiconductor body
Assignee: Siemens Schuckertwerke AG
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Filing: 1958-07-21
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Granted: 1960-07-26
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Herlet Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
H; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A POWER TRANSISTOR COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR BODY HAVING AT LEAST TWO HIGHLY DOPED AREAS OF A GIVEN CONDUCTANCE TYPE AND A LESS HIGHLY DOPED BASIS AREA OF THE OPPOSITE CONDUCTANCE TYPE INTERMEDIATE SAID OTHER TWO AREAS AND FORMING RESPECTIVE P-N JUNCTIONS TOGETHER THEREWITH THE TWO HIGH DOPED AREAS PROVIDING A COLLECTOR AND AN EMITTER RESPECTIVELY, SAID SEMICONDUCTOR BODY IN SAID BASIS AREA HAVING A SPECIFIC RESISTANCE (P) AND A THICKNESS (W) CORRELATED TO EACH OTHER APPROXIMATELY IN ACCORDANCE WITH THE RATIO
Claim 2
Dependent Claim
82 words
A POWER TRANSISTOR COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR BODY HAVING AT LEAST TWO HIGHLY DOPED AREAS OF A GIVEN CONDUCTANCE TYPE AND A LESS HIGHLY DOPED BASIS AREA OF THE OPPOSITE CONDUCTANCE TYPE INTERMEDIATE SAID OTHER TWO AREAS AND FORMING RESPECTIVE P-N JUNCTIONS TOGETHER THEREWITH THE TWO HIGH DOPED AREAS PROVIDING A COLLECTOR AND AN EMITTER RESPECTIVELY, SAID SEMICONDUCTOR BODY IN SAID BASIS AREA HAVING A SPECIFIC RESISTANCE (P) AND A THICKNESS (W) CORRELATED TO EACH OTHER APPROXIMATELY IN ACCORDANCE WITH THE RATIO
References Cited (Backward Citations)
US2843515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |