US3078376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic circuits employing negative resistance diodes
Assignee: RCA Corp
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Filing: 1959-02-24
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Granted: 1963-02-19
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Lewin Morton Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:30
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10; A; A47; A47F; A47F7/00; A47F7/28; A47F7/285; G; G11; G11C; G11C19/00; G11C19/28; H03K3/00; H03K3/02; H03K3/313; H03K3/315; G11C2211/00; G11C2211/56; G11C2211/561; G11C2211/5614
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A SWITCHING CIRCUIT COMPRISING A SEMICONDUCTOR DEVICE HAVING ONLY TWO TERMINALS AND A NEGATIVE RESISTANCE CHARACTERISTIC, SAID SWITCHING CIRCUIT HAVING TWO STABLE STATES OF OPERATION, MEANS CONNECTED TO SAID TERMINALS FOR APPLYING AN ENERGIZING SIGNAL OF SELECTED AMPLITUDE THERETO, WHEREBY SAID CIRCUIT ASSUMES ONE OF ITS TWO STABLE OPERATING STATES, AND MEANS FOR SWITCHING SAID CIRCUIT TO THE OTHER ONE OF ITS STABLE OPERATING STATES, SAID MEANS INCLUDING MEANS FOR APPLYING A PLURALITY OF INFORMATION SIGNALS TO SAID TERMINALS DURING THE APPLICATION OF SAID ENERGIZING SIGNAL.
Claim 2
Dependent Claim
86 words
A SWITCHING CIRCUIT COMPRISING A SEMICONDUCTOR DEVICE HAVING ONLY TWO TERMINALS AND A NEGATIVE RESISTANCE CHARACTERISTIC, SAID SWITCHING CIRCUIT HAVING TWO STABLE STATES OF OPERATION, MEANS CONNECTED TO SAID TERMINALS FOR APPLYING AN ENERGIZING SIGNAL OF SELECTED AMPLITUDE THERETO, WHEREBY SAID CIRCUIT ASSUMES ONE OF ITS TWO STABLE OPERATING STATES, AND MEANS FOR SWITCHING SAID CIRCUIT TO THE OTHER ONE OF ITS STABLE OPERATING STATES, SAID MEANS INCLUDING MEANS FOR APPLYING A PLURALITY OF INFORMATION SIGNALS TO SAID TERMINALS DURING THE APPLICATION OF SAID ENERGIZING SIGNAL.
Claim 3
Dependent Claim
100 words
IN COMBINATION, A PLURALITY OF CASCADE CONNECTED, PULSE RESPONSIVE, LOGIC CIRCUITS, EACH NORMALLY CAPABLE OF PROPAGATING AN OUTPUT SIGNAL IN EITHER THE FORWARD OR BACKWARD DIRECTION, AND EACH CAPABLE OF ASSUMING ONE OF TWO STABLE OPERATING STATES; MEANS FOR SEQUENTIALLY APPLYING ENERGIZING PULSES TO SAID CIRCUITS IN SUCH MANNER THAT EACH CIRCUIT IS ENABLED AFTER THE IMMEDIATELY PRECEDING CIRCUIT IS ENABLED AND BEFORE THE IMMEDIATELY SUCCEEDING CIRCUIT IS ENABLED, AND IS DISABLED AFTER THE IMMEDIATELY SUCCEEDING CIRCUIT IS ENABLED; AND MEANS FOR APPLYING SIGNALS INDICATIVE OF BINARY DIGITS TO EACH STAGE DURING THE APPLICATION OF ENERGIZING PULSES TO THAT STAGE.
Claim 4
Dependent Claim
100 words
IN COMBINATION, A PLURALITY OF CASCADE CONNECTED, PULSE RESPONSIVE, LOGIC CIRCUITS, EACH NORMALLY CAPABLE OF PROPAGATING AN OUTPUT SIGNAL IN EITHER THE FORWARD OR BACKWARD DIRECTION, AND EACH CAPABLE OF ASSUMING ONE OF TWO STABLE OPERATING STATES; MEANS FOR SEQUENTIALLY APPLYING ENERGIZING PULSES TO SAID CIRCUITS IN SUCH MANNER THAT EACH CIRCUIT IS ENABLED AFTER THE IMMEDIATELY PRECEDING CIRCUIT IS ENABLED AND BEFORE THE IMMEDIATELY SUCCEEDING CIRCUIT IS ENABLED, AND IS DISABLED AFTER THE IMMEDIATELY SUCCEEDING CIRCUIT IS ENABLED; AND MEANS FOR APPLYING SIGNALS INDICATIVE OF BINARY DIGITS TO EACH STAGE DURING THE APPLICATION OF ENERGIZING PULSES TO THAT STAGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |