US3564356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage integrated circuit transistor
Assignee: Tektronix Inc
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Filing: 1968-10-24
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Granted: 1971-02-16
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Expires: 1988-10-24
Abstract
Abstract TERING NORMAL COLLECTOR-EMITTER BREAKDOWN, BECAUSE THE FIELD INTENSITY IN THE COLLECTOR-BASE CHARGE LAYER IS LIMITED. AN INTEGRATED CIRCUIT TRANSISTOR INCLUDES A SUBSTRATE AND AN EPITAXIALLY GROWN SEMICONDUCTOR MATERIAL THEREON PROVIDING A THREE-LAYER TRANSISTOR COMPRISING A COLLECTOR LAYER, AN EMITTER LAYER, AND A BASE LAYER THEREBETWEEN. THE COLLECTOR LAYER IS CHARACTERIZED BY VIRTUALLY COMPLETE DEPLETION OF MAJORITY CARRIERS AT A COLLECTOR-EMITTER VOLTAGE LESS THAN THE VOLTAGE AT WHICH COLECTOR-EMITTER BREAKDOWN WOULD OTHERWISE OCCUR. AS A RESULT, THE COLLECTOR-EMITTER VOLTAGE MAY BE INCREASED WITHOUT ENCOUN-
Inventors
- 👤 George R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:39
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D62/00; H10D62/60
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |