US3344323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled rectifiers with reduced cross-sectional control zone connecting portion
Assignee: US Philips Corp
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Filing: 1964-07-24
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Granted: 1967-09-26
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Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Einthoven Willem Gerard
- 👤 Baas Willem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:05
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10D; H10D99/00; H10P; H10P95/00; H10W72/00; H10W72/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A CONTROLLED RECTIFIER COMPRISING A SEMICONDUCTIVE BODY HAVING FOUR SUCCESSIVE ZONES OF ALTERNATING CONDUCTIVITY TYPE FORMING THREE P-N JUNCTIONS WITH ONE OF THE OUTERMOST ZONES CONSTITUTING AN EMITTER ZONE AND THE ZONE ADJACENT THERETO CONSTITUTING A CONTROL ZONE, SAID CONTROL ZONE HAVING A FIRST PORTION UNDERLYING THE EMITTER ZONE AND A SECOND JUXTAPOSED EXPOSED PORTION ADJACENT THE EMITTER ZONE, AN EMITTER CONTACT ON THE EMITTER ZONE AND A CONTROL CONTACT ON THE EXPOSED SECOND PORTION OF THE CONTROL ZONE AND SPACED FROM THE FIRST PORTION, THE PERIPHERAL EDGE OF THE SAID FIRST PORTION FACING THE CONTROL CONTACT HAVING A GIVEN LENGTH AND A GIVEN CROSS-SECTIONAL AREA, THE BULK OF THE PORTION OF THE SECOND CONTROL ZONE
Claim 2
Dependent Claim
116 words
A CONTROLLED RECTIFIER COMPRISING A SEMICONDUCTIVE BODY HAVING FOUR SUCCESSIVE ZONES OF ALTERNATING CONDUCTIVITY TYPE FORMING THREE P-N JUNCTIONS WITH ONE OF THE OUTERMOST ZONES CONSTITUTING AN EMITTER ZONE AND THE ZONE ADJACENT THERETO CONSTITUTING A CONTROL ZONE, SAID CONTROL ZONE HAVING A FIRST PORTION UNDERLYING THE EMITTER ZONE AND A SECOND JUXTAPOSED EXPOSED PORTION ADJACENT THE EMITTER ZONE, AN EMITTER CONTACT ON THE EMITTER ZONE AND A CONTROL CONTACT ON THE EXPOSED SECOND PORTION OF THE CONTROL ZONE AND SPACED FROM THE FIRST PORTION, THE PERIPHERAL EDGE OF THE SAID FIRST PORTION FACING THE CONTROL CONTACT HAVING A GIVEN LENGTH AND A GIVEN CROSS-SECTIONAL AREA, THE BULK OF THE PORTION OF THE SECOND CONTROL ZONE
References Cited (Backward Citations)
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Cited
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US3140963A
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US2993154A
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US3263139A
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US3246172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |