Patent US3295030A successfully refreshed from Google Patents.
US3295030A
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Field effect transistor and method
Assignee: Signetics Corp
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Filing: 1963-12-18
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Granted: 1966-12-27
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Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 David F Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:06
CPC Classifications
H; H10; H10D; H10D99/00; H10D30/00; H10D30/80; H10P; H10P32/00; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/053; Y10S148/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A FIELD EFFECT TRANSISTOR, A SEMICONDUCTOR BODY HAVING A SURFACE, SAID BODY CONTAINING A REGION OF ONE CONDUCTIVITY TYPE, A REGION OF OPPOSITE CONDUCTIVITY TYPE DISPOSED IN SAID REGION OF ONE CONDUCTIVITY TYPE AND FORMING A JUNCTION WHICH SURROUNDS SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND EXTENDS TO SAID SURFACE, A REGION OF SAID ONE CONDUCTIVITY TYPE DISPOSED IN SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND FORMING A JUNCTION WHICH SURROUNDS SAID REGION OF ONE CONDUCTIVTITY TYPE AND EXTENDS TO SAID SURFACE, A CHANNEL OF SAID ONE CONDUCTIVITY TYPE EXTENDING THROUGH SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND SERVING TO JOIN SAID REGIONS OF ONE CON DUCTIVITY TYPE, SAID CHANNEL HAVING A CROSS-SECTIONAL DIMENSIONS SUBSTANTIALLY PARALLEL TO SAID SURFACE WHICH IS SUBSTANTIALLY LESS THAN A SUBSTANTIALLY PARALLEL CROSS-SECTIONAL DIMENSION OF SAID SECOND NAMED REGION OF SAID ONE CONDUCTIVITY TYPE, AND CONTACT MEANS ENGAGING EACH OF SAID REGIONS.
Claim 2
Dependent Claim
148 words
IN A FIELD EFFECT TRANSISTOR, A SEMICONDUCTOR BODY HAVING A SURFACE, SAID BODY CONTAINING A REGION OF ONE CONDUCTIVITY TYPE, A REGION OF OPPOSITE CONDUCTIVITY TYPE DISPOSED IN SAID REGION OF ONE CONDUCTIVITY TYPE AND FORMING A JUNCTION WHICH SURROUNDS SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND EXTENDS TO SAID SURFACE, A REGION OF SAID ONE CONDUCTIVITY TYPE DISPOSED IN SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND FORMING A JUNCTION WHICH SURROUNDS SAID REGION OF ONE CONDUCTIVTITY TYPE AND EXTENDS TO SAID SURFACE, A CHANNEL OF SAID ONE CONDUCTIVITY TYPE EXTENDING THROUGH SAID REGION OF OPPOSITE CONDUCTIVITY TYPE AND SERVING TO JOIN SAID REGIONS OF ONE CON DUCTIVITY TYPE, SAID CHANNEL HAVING A CROSS-SECTIONAL DIMENSIONS SUBSTANTIALLY PARALLEL TO SAID SURFACE WHICH IS SUBSTANTIALLY LESS THAN A SUBSTANTIALLY PARALLEL CROSS-SECTIONAL DIMENSION OF SAID SECOND NAMED REGION OF SAID ONE CONDUCTIVITY TYPE, AND CONTACT MEANS ENGAGING EACH OF SAID REGIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |