US3354364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discontinuous resistance semiconductor device
Assignee: NEC Corp
•
Filing: 1964-07-08
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Granted: 1967-11-21
•
Expires: 1984-07-08
Abstract
No abstract record available.
Inventors
- 👤 Nakamura Tetsuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:59
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/40; H10D1/43; H10D99/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A SEMICONDUCTOR DEVICE COMPRISING AT LEAST TWO USHAPED PN JUNCTIONS IN PARALLEL-SPACED RELATIONSHIP EXTENDING FROM THE SAME SURFACE OF SAID DEVICE, A PAIR OF TERMINALS ONLY, DISPOSED TO INCLUDE SAID JUNCTIONS THEREBETWEEN; SEMICONDUCTOR MATERIAL OF THE FIRST TYPE FILLING THE INTERIOR OF SAID U''S; SEMICONDUCTOR MATERIAL OF THE SECOND TYPE EMBRACING THE PERIPHERY OF SAID U''S AND CONTACTING SAID TERMINALS; A SURFACE CONCENTRATION OF SEMICONDUCTOR MATERIAL OF THE SECOND TYPE AND OF HIGHER IMPURITY CONCENTRATION THAN SAID SEMICONDUCTOR MATERIAL OF THE SECOND TYPE DISPOSED TO INCLUDE A PORTION OF THE SURFACE OF THE FIRST TYPE SEMICONDUCTOR MATERIAL WITHIN AT LEAST ONE, BUT LESS THAN ALL, OF SAID U-SHAPED JUNCTIONS AND THE NEAREST PROXIMITY TERMINAL.
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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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |