US3114864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor with multi-regions of one conductivity-type and a common region of opposite conductivity-type forming district tunneldiode junctions
Assignee: Fairchild Semiconductor Corp
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Filing: 1960-02-08
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Granted: 1963-12-17
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Sah Chih-Tang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:55
CPC Classifications
H; H03; H03B; H03B7/00; H03B7/02; H03B7/06; H03B7/08; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR CONTAINING FOUR REGIONS, THREE OF SAID REGIONS BEING OF THE SAME CONDUCTIVITY TYPE AND ARRANGED IN LAYERS, ONE ATOP THE NEXT, THE MIDDLE OF SAID THREE REGIONS BEING OF SUBSTANTIALLY HIGHER RESISTIVITY THAN THE TWO SURFACE REGIONS, AND A FOURTH REGION OF THE OPPOSITE CONDUCTIVITY TYPE FORMING PN JUNCTIONS WITH EACH OF SAID THREE REGIONS, THE JUNCTIONS WITH SAID SURFACE REGIONS HAVING TUNNEL-DIODE CHARACTERISTICS.
Claim 2
Dependent Claim
72 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR CONTAINING FOUR REGIONS, THREE OF SAID REGIONS BEING OF THE SAME CONDUCTIVITY TYPE AND ARRANGED IN LAYERS, ONE ATOP THE NEXT, THE MIDDLE OF SAID THREE REGIONS BEING OF SUBSTANTIALLY HIGHER RESISTIVITY THAN THE TWO SURFACE REGIONS, AND A FOURTH REGION OF THE OPPOSITE CONDUCTIVITY TYPE FORMING PN JUNCTIONS WITH EACH OF SAID THREE REGIONS, THE JUNCTIONS WITH SAID SURFACE REGIONS HAVING TUNNEL-DIODE CHARACTERISTICS.
References Cited (Backward Citations)
US2937960A
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US2931958A
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US2868683A
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US2954307A
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US2900286A
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US2937324A
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US2937114A
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US3079512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |