US3284639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor switch device of controlled rectifier type responsive to approximately equal gate signals of either polarity
Assignee: Westinghouse Electric Corp
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Filing: 1963-02-19
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Granted: 1966-11-08
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Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Michael N Giuliano
- 👤 Strull Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:04
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H10; H10D; H10D18/00; H10D18/241; H10D64/00; H10D64/20; H10D64/27; H10D64/291; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SEMICONDUCTOR SWITCH DEVICE COMPRISING: AT LEAST FIVE REGIONS OF SEMICONDUCTIVE MATERIAL INCLUDING, IN SEQUENCE, A FIRST REGION OF SEMICONDUCTIVE MATERIAL OF A FIRST TYPE OF CONDUCTIVITY, A SECOND REGION OF SEMICONDUCTIVE MATERIAL OF A SECOND TYPE OF CONDUCTIVITY, A THIRD REGION OF MATERIAL WHICH HAS A LOW DOPANT CONCENTRATTION SO THAT IT EXHIBITS LOW EXTRINSIC SEMICONDUCTIVITY RELATIVE TO THE OTHER REGIONS OF THE DEVICE, A FOIRTH REGION OF SEMICONDUCTIVE MATERIAL OF SAID FIRST TYPE OF CONDUCTIVITY AND A FIFTH REGION OF SEMICONDUCTIVE MATERIAL OF SAID SECOND TYPE CONDUCTIVITY; AN ELECTRICALLY INDEPENDENT CONTACT ON EACH OF SAID FIRST, SECOND, FOURTH AND FIFTH REGIONS; A LOAD CIRCUIT CONNECTED BETWEEN SAID CONTACTS ON SAID FIRST AND FIFTH REGIONS AND A SOURCE OF SWITCHING PULSES CONNECTED TO ONE OF SAID CONTACTS ON SAID SECOND ANS FOURTH REGIONS.
Claim 2
Dependent Claim
134 words
A SEMICONDUCTOR SWITCH DEVICE COMPRISING: AT LEAST FIVE REGIONS OF SEMICONDUCTIVE MATERIAL INCLUDING, IN SEQUENCE, A FIRST REGION OF SEMICONDUCTIVE MATERIAL OF A FIRST TYPE OF CONDUCTIVITY, A SECOND REGION OF SEMICONDUCTIVE MATERIAL OF A SECOND TYPE OF CONDUCTIVITY, A THIRD REGION OF MATERIAL WHICH HAS A LOW DOPANT CONCENTRATTION SO THAT IT EXHIBITS LOW EXTRINSIC SEMICONDUCTIVITY RELATIVE TO THE OTHER REGIONS OF THE DEVICE, A FOIRTH REGION OF SEMICONDUCTIVE MATERIAL OF SAID FIRST TYPE OF CONDUCTIVITY AND A FIFTH REGION OF SEMICONDUCTIVE MATERIAL OF SAID SECOND TYPE CONDUCTIVITY; AN ELECTRICALLY INDEPENDENT CONTACT ON EACH OF SAID FIRST, SECOND, FOURTH AND FIFTH REGIONS; A LOAD CIRCUIT CONNECTED BETWEEN SAID CONTACTS ON SAID FIRST AND FIFTH REGIONS AND A SOURCE OF SWITCHING PULSES CONNECTED TO ONE OF SAID CONTACTS ON SAID SECOND ANS FOURTH REGIONS.
References Cited (Backward Citations)
US2983854A
Cited
US3159780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |