US3235746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonsaturating transistor switching circuit
Assignee: AT&T Inc
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Filing: 1960-10-11
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Granted: 1966-02-15
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 Karnaugh Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:01
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN COMBINATION IN A TRANSISTOR SWITCHING CIRCUIT, A TRANSISTOR HAVING TWO OUTPUT ELECTRODES, AN OUTPUT PATH CONNECTED BETWEEN SAID ELECTRODES, A VOLTAGE-CONTROLLED NEGATIVE RESISTANCE DIODE, CHARACTERIZED BY A NEGATIVE RESISTANCE OF -R UNITS IN A BOUNDED CONDUCTION RANGE, INCLUDED IN SERIES IN SAID PATH, AND MASKING MEANS CONNECTED IN PARALLEL WITH SAID DIODE AND CHARACTERIZED BY A REAL IMPEDANCE COMPONENT OF SUBTANTIALLY +R UNITS.
Claim 2
Dependent Claim
64 words
IN COMBINATION IN A TRANSISTOR SWITCHING CIRCUIT, A TRANSISTOR HAVING TWO OUTPUT ELECTRODES, AN OUTPUT PATH CONNECTED BETWEEN SAID ELECTRODES, A VOLTAGE-CONTROLLED NEGATIVE RESISTANCE DIODE, CHARACTERIZED BY A NEGATIVE RESISTANCE OF -R UNITS IN A BOUNDED CONDUCTION RANGE, INCLUDED IN SERIES IN SAID PATH, AND MASKING MEANS CONNECTED IN PARALLEL WITH SAID DIODE AND CHARACTERIZED BY A REAL IMPEDANCE COMPONENT OF SUBTANTIALLY +R UNITS.
References Cited (Backward Citations)
US3090926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |