US3562548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement with semiconductor elements
Assignee: Arbeitsstelle fuer Molekularelektronik
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Filing: 1968-04-05
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Granted: 1971-02-09
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Expires: 1988-04-05
Abstract
Abstract A switching circuit for performing logic operations in which the collector electrodes of a plurality of input transistors are joined into a nodal point and the emitter electrodes are connected in parallel while the base electrodes serve as separate inputs. The nodal point is then connected to the collector electrode of an inversely operated multiemitter transistor, the base electrode of which is returned to a source of potential while the emitter electrodes thereof form output terminals.
Inventors
- 👤 Dietrich Armgarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:00
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/01; H03K19/013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A switching circuit as claimed in claim 1, wherein said multitransistor device is a multiemitter device having lateral transistor arrangement comprising conductivity regions forming emitter electrodes and regions of highly doped material surrounding said emitter electrodes of said multitransistor device.
Claim 2
Dependent Claim
23 words
A switching circuit as claimed in claim 2, including means interconnecting said emitter electrodes of said multitransistor device with said collector electrodes thereof.
Claim 3
Dependent Claim
34 words
A switching circuit as claimed in claim 1, wherein active or passive circuit elements are connected to at least one of said output terminals and returned to the collector electrode of said multitransistor device.
Claim 4
Dependent Claim
26 words
A switching circuit as claimed in claim 1, including an additional terminal for connecting further input transistor devices to the collector electrode of said multitransistor device.
References Cited (Backward Citations)
US3378695A
Cited
US3416043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |