US3350611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate fired bidirectional switch
Assignee: General Electric Co
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Filing: 1965-02-04
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Granted: 1967-10-31
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Robert I Scace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:59
CPC Classifications
H; H10; H10D; H10D18/00; H10D18/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
IN A BIDIRECTIONAL SWITCHING DEVICE WHEREIN A GATE ELECTRODE PROVIDES THE CONTROL FOR SWITCHING THE DEVICE BETWEEN NON-CONDUCTING AND CONDUCTING STATES FOR A CURRENT PATH BETWEEN A PAIR OF MAIN CURRENT CARRYING ELECTRODES, A SEMICONDUCTOR BODY HAVING A PLURALITY OF ALTERNATING REGIONS, ADJACENT REGIONS BEING OF OPPOSITE CONDUCTIVITY TYPE SEPARATED BY RECTIFYING BARRIERS, ONE OF SAID REGIONS ADJACENT ONE MAJOR SURFACE TO SAID BODY CONSTITUTING A MAIN EMITTER, SAID MAIN EMITTER FORMED IN THE NEXT ADJACENT REGION IN SUCH A MANNER THAT A PORTION OF SAID NEXT ADJACENT REION IS EXPOSED AT SAID ONE SURFACE, ONE MAIN CURRENT CARRYING ELECTRODE IN OHMIC CONTACT WITH SAID ONE MAJOR SURFACE OF SAID BODY AND EXTENDING OVER AT LEAST A PORTION OF BOTH SAID MAIN EMITTER AND SAID NEXT ADJACENT REGION THEREBY DEFINING A LOAD CURRENT CARRYING AREA, A GATE EMITTER REGION OF THE SAME CONDUCTIVITY TYPE AS SAID MAIN EMITTER REGION FORMED IN SAID NEXT ADJACENT REGION ADJACENT SAID ONE SURFACE OF SAID BODY, A GATE ELECTRODE OHMICALLY CONNECTED TO BOTH SAID GATE EMITTER REGION AND SAID NEXT ADJACENT REGION AND POSITIONED SO THAT ONE EDGE WHICH EXTENDS OVER BOTH SAID GATE EMITTER REGION AND SAID NEXT ADJACENT REGION IS EVERYWHERE EQUIDISTANT FROM ONE EDGE OF SAID MAIN ELECTRODE WHICH EXTENDS OVER BOTH SAID MAIN EMITTER REGION AND SAID NEXT ADJACENT REGION.
Claim 2
Dependent Claim
220 words
IN A BIDIRECTIONAL SWITCHING DEVICE WHEREIN A GATE ELECTRODE PROVIDES THE CONTROL FOR SWITCHING THE DEVICE BETWEEN NON-CONDUCTING AND CONDUCTING STATES FOR A CURRENT PATH BETWEEN A PAIR OF MAIN CURRENT CARRYING ELECTRODES, A SEMICONDUCTOR BODY HAVING A PLURALITY OF ALTERNATING REGIONS, ADJACENT REGIONS BEING OF OPPOSITE CONDUCTIVITY TYPE SEPARATED BY RECTIFYING BARRIERS, ONE OF SAID REGIONS ADJACENT ONE MAJOR SURFACE TO SAID BODY CONSTITUTING A MAIN EMITTER, SAID MAIN EMITTER FORMED IN THE NEXT ADJACENT REGION IN SUCH A MANNER THAT A PORTION OF SAID NEXT ADJACENT REION IS EXPOSED AT SAID ONE SURFACE, ONE MAIN CURRENT CARRYING ELECTRODE IN OHMIC CONTACT WITH SAID ONE MAJOR SURFACE OF SAID BODY AND EXTENDING OVER AT LEAST A PORTION OF BOTH SAID MAIN EMITTER AND SAID NEXT ADJACENT REGION THEREBY DEFINING A LOAD CURRENT CARRYING AREA, A GATE EMITTER REGION OF THE SAME CONDUCTIVITY TYPE AS SAID MAIN EMITTER REGION FORMED IN SAID NEXT ADJACENT REGION ADJACENT SAID ONE SURFACE OF SAID BODY, A GATE ELECTRODE OHMICALLY CONNECTED TO BOTH SAID GATE EMITTER REGION AND SAID NEXT ADJACENT REGION AND POSITIONED SO THAT ONE EDGE WHICH EXTENDS OVER BOTH SAID GATE EMITTER REGION AND SAID NEXT ADJACENT REGION IS EVERYWHERE EQUIDISTANT FROM ONE EDGE OF SAID MAIN ELECTRODE WHICH EXTENDS OVER BOTH SAID MAIN EMITTER REGION AND SAID NEXT ADJACENT REGION.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |