US3280392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic semiconductor device of the four-layer junction type
Assignee: Siemens Schuckertwerke AG
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Filing: 1962-05-08
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Granted: 1966-10-18
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Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 Benda Hansjochen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:43
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/13; H10D62/141; H10D62/148; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN ELECTRONIC PNPN-JUNCTION SEMICONDUCTOR DEVICE COMPRISING AN ESSENTIALLY MONOCRYSTALLINE SEMICONDUCTOR BODY HAVING TWO OUTER ZONES OF HIGHER DOPE CONCENTRATION THAN THE TWO INNER ZONES, ONE OF SAID OUTER ZONES CONSTITUTING THE EMITTER ZONE AND THE NEXT ADJACENT INNER ZONE CONSTITUTING THE BASE ZONE OF THE DEVICE, SAID BASE ZONE AND SAID EMITTER ZONE BEING IN SUBSTANTIALLY PLANAR AREA JUNCTION WITH EACH OTHER, SAID BASE ZONE HAVING A MULTIPLICITY OF INTEGRAL PARTS THEREOF EXTENDING THROUGH SAID EMITTER ZONE TO THE SURFACE OF THE DEVICE AT RESPECTIVE LOCALITIES DISTRIBUTED OVER THE JUNCTION AREA, A CONTROL ELECTRODE IN SAID BASE ZONE, AND AN ELECTRICALLY CONDUCTIVE COATING ON SAID BODY CONTACTING SAID EMITTER ZONE AND FORMING A RESISTANCE CONNECTION BETWEEN SAID BASE ZONE PARTS AT THE EMITTER SURFACE.
Claim 2
Dependent Claim
124 words
AN ELECTRONIC PNPN-JUNCTION SEMICONDUCTOR DEVICE COMPRISING AN ESSENTIALLY MONOCRYSTALLINE SEMICONDUCTOR BODY HAVING TWO OUTER ZONES OF HIGHER DOPE CONCENTRATION THAN THE TWO INNER ZONES, ONE OF SAID OUTER ZONES CONSTITUTING THE EMITTER ZONE AND THE NEXT ADJACENT INNER ZONE CONSTITUTING THE BASE ZONE OF THE DEVICE, SAID BASE ZONE AND SAID EMITTER ZONE BEING IN SUBSTANTIALLY PLANAR AREA JUNCTION WITH EACH OTHER, SAID BASE ZONE HAVING A MULTIPLICITY OF INTEGRAL PARTS THEREOF EXTENDING THROUGH SAID EMITTER ZONE TO THE SURFACE OF THE DEVICE AT RESPECTIVE LOCALITIES DISTRIBUTED OVER THE JUNCTION AREA, A CONTROL ELECTRODE IN SAID BASE ZONE, AND AN ELECTRICALLY CONDUCTIVE COATING ON SAID BODY CONTACTING SAID EMITTER ZONE AND FORMING A RESISTANCE CONNECTION BETWEEN SAID BASE ZONE PARTS AT THE EMITTER SURFACE.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |