US3248563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low power semiconductor logic circuit
Assignee: Westinghouse Electric Corp
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Filing: 1962-09-10
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Granted: 1966-04-26
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Lin Hung Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A SEMICONDUCTOR LOGIC CIRCUIT COMPRISING, IN COMBINATION: A PLURALITY OF TRANSISTORS EACH HAVING AN INPUT, COLLECTOR AND AN EMITTER ELECTRODE; THE COLLECTOR TO EMITTER CURRENT PATHS OF SAID TRANSISTORS CONNECTED IN PARALLEL CONFIGURATION WITH EACH COLLECTOR JOINED AT A COMMON POINT; OUTPUT MEANS CONNECTED TO THE COLLECTORS OF SAID TRANSISTORS; CURRENT SUPPLY MEANS CONNECTED TO SAID COMMON POINT, SAID CURRENT SUPPLY MEANS INCLUDING A RESISTANCE ELEMENT AND A TUNNEL DIODE CONNECTED IN PARALLEL CIRCUIT CONFIGURATION WITH SAID RESISTANCE ELEMENT; SAID TUNNEL DIODE HAVING A NEGATIVE RESISTANCE PORTION IN ITS VOLTAGECURRENT CHARACTERISTIC CURVE SUBSTANTIALLY EQUAL IN ABSOLUTE VALUE TO THE RESISTANCE OF SAID RESISTANCE ELEMENT, AND SAID TRANSISTORS OPERATE ON THE PORTION OF THE TUNNEL DIODE VOLTAGE-CURRENT CHARACTERISTIC DEFINED BY THE ABSOLUTE VALUE OF THE NEGATIVE RESISTANCE PORTION EQUAL TO THE RESISTANCE OF THE RESISTANCE ELEMENT.
Claim 2
Dependent Claim
135 words
A SEMICONDUCTOR LOGIC CIRCUIT COMPRISING, IN COMBINATION: A PLURALITY OF TRANSISTORS EACH HAVING AN INPUT, COLLECTOR AND AN EMITTER ELECTRODE; THE COLLECTOR TO EMITTER CURRENT PATHS OF SAID TRANSISTORS CONNECTED IN PARALLEL CONFIGURATION WITH EACH COLLECTOR JOINED AT A COMMON POINT; OUTPUT MEANS CONNECTED TO THE COLLECTORS OF SAID TRANSISTORS; CURRENT SUPPLY MEANS CONNECTED TO SAID COMMON POINT, SAID CURRENT SUPPLY MEANS INCLUDING A RESISTANCE ELEMENT AND A TUNNEL DIODE CONNECTED IN PARALLEL CIRCUIT CONFIGURATION WITH SAID RESISTANCE ELEMENT; SAID TUNNEL DIODE HAVING A NEGATIVE RESISTANCE PORTION IN ITS VOLTAGECURRENT CHARACTERISTIC CURVE SUBSTANTIALLY EQUAL IN ABSOLUTE VALUE TO THE RESISTANCE OF SAID RESISTANCE ELEMENT, AND SAID TRANSISTORS OPERATE ON THE PORTION OF THE TUNNEL DIODE VOLTAGE-CURRENT CHARACTERISTIC DEFINED BY THE ABSOLUTE VALUE OF THE NEGATIVE RESISTANCE PORTION EQUAL TO THE RESISTANCE OF THE RESISTANCE ELEMENT.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |