Patent US3152928A successfully refreshed from Google Patents.
US3152928A
Expired / Lapsed
US
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Semiconductor device and method
Assignee: Clevite Corp
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Filing: 1961-05-18
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Granted: 1964-10-13
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Hubner Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:19
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D84/00; H10D84/60; H10D84/676; H10D99/00; H10W; H10W15/00; H10W15/01; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/085; Y10S148/145
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A SEMICONDUCTOR SWITCHING DEVICE COMPRISING FOUR SUCCESSIVE REGIONS OF SEMICONDUCTIVE MATERIAL WITH CONTIGUOUS REGIONS BEING OF OPPOSITE CONDUCTIVITY TYPE TO FORM THREE JUNCTIONS, A CENTER JUNCTION AND OUTER JUNCTIONS, AT LEAST ONE OF THE REGIONS FORMING THE CENTER JUNCTION HAVING A PLURALITY OF SPACED ISOLATED LOCALIZED AREAS OF HIGHER CONCENTRATION OF UNBALANCED CHARGES AT THE JUNCTION THAN THE REMAINDER OF THE REGION WHEREBY THE SWITCHING VOLTAGE AT THE JUNCTION DEFINED BY SAID ISOLATED LOCALIZED AREAS OF THE DEVICE IS SUBSTANTIALLY LESS THAN THE SWITCHING VOLTAGE OF THE REMAINDER OF THE JUNCTION OF THE DEVICE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |