Patent US3197709A successfully refreshed from Google Patents.
US3197709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse semiconductor amplifier with a reduced leakage current effect
Assignee: Unisys Corp
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Filing: 1962-06-05
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Granted: 1965-07-27
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Antonio John
- 👤 Townsend Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:35
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
AN AMPLIFIER COMPRISING A FIRST TRANSISTOR HAVING A FIRST COLLECTOR ELECTRODE, A FIRST BASE ELECTRODE, SAID FIRST COLLECTOR ELECTRODE ADAPTED TO BE C ONNECTED TO AN OUTPUT RECEIVER CIRCUIT; AND A FIRST EMITTER ELECTRODE; MEANS FOR APPLYING AN INPUT SIGNAL TO BE AMPLIFIED BETWEEN SAID FIRST BASE ELECTRODE AND GROUND; MEANS CONNECTED BETWEEN SAID FIRST BASE ELECTRODE AND GROUND TO INTEGRATE SAID APPLIED INPUT SIGNAL; A SECOND TRANSISTOR HAVING A SECOND COLLECTOR ELECTRODE, A SECOND BASE ELECTRODE, AND A SECOND EMITTER ELECTRODE; SAID FIRST EMITTER ELECTRODE BEING CONNECTED TO SAID SECOND COLLECTOR ELECTRODE; MEANS FOR CONNECTING SAID SECOND EMITTER ELECTRODE TO GROUND TO FORM A SERIES PATH FROM SAID FIRST COLLECTOR ELECTRODE, THROUGH SAID FIRST TRANSISTOR, SAID FIRST EMITTER ELECTRODE, SAID SECOND COLLECTOR ELECTRODE, THROUGH SAID SECOND TRANSISTOR, AND SAID SECOND EMITTER TO GROUND; CIRCUIT MEANS CONNECTED ACROSS SAID FIRST COLLECTOR ELECTRODE AND GROUND TO RECEIVE AN OUTPUT SIGNAL FROM SAID FIRST AND SECOND TRANSISTORS AND MEANS FOR SIMULTANEOUSLY APPLYING AN INTERMITTENT POTENTIAL BETWEEN BOTH THE COMMON JUNCTION PROVIDED BETWEEN SAID FIRST COLLECTOR ELECTRODE AND SAID SECOND BASE ELECTRODE AND GROUND TO SIMULTANEOUSLY ENERGIZE SAID FIRST TRANSISTOR AND TO RENDER SAID SECOND TRANSISTOR CONDUCTIVE.
Claim 2
Dependent Claim
194 words
AN AMPLIFIER COMPRISING A FIRST TRANSISTOR HAVING A FIRST COLLECTOR ELECTRODE, A FIRST BASE ELECTRODE, SAID FIRST COLLECTOR ELECTRODE ADAPTED TO BE C ONNECTED TO AN OUTPUT RECEIVER CIRCUIT; AND A FIRST EMITTER ELECTRODE; MEANS FOR APPLYING AN INPUT SIGNAL TO BE AMPLIFIED BETWEEN SAID FIRST BASE ELECTRODE AND GROUND; MEANS CONNECTED BETWEEN SAID FIRST BASE ELECTRODE AND GROUND TO INTEGRATE SAID APPLIED INPUT SIGNAL; A SECOND TRANSISTOR HAVING A SECOND COLLECTOR ELECTRODE, A SECOND BASE ELECTRODE, AND A SECOND EMITTER ELECTRODE; SAID FIRST EMITTER ELECTRODE BEING CONNECTED TO SAID SECOND COLLECTOR ELECTRODE; MEANS FOR CONNECTING SAID SECOND EMITTER ELECTRODE TO GROUND TO FORM A SERIES PATH FROM SAID FIRST COLLECTOR ELECTRODE, THROUGH SAID FIRST TRANSISTOR, SAID FIRST EMITTER ELECTRODE, SAID SECOND COLLECTOR ELECTRODE, THROUGH SAID SECOND TRANSISTOR, AND SAID SECOND EMITTER TO GROUND; CIRCUIT MEANS CONNECTED ACROSS SAID FIRST COLLECTOR ELECTRODE AND GROUND TO RECEIVE AN OUTPUT SIGNAL FROM SAID FIRST AND SECOND TRANSISTORS AND MEANS FOR SIMULTANEOUSLY APPLYING AN INTERMITTENT POTENTIAL BETWEEN BOTH THE COMMON JUNCTION PROVIDED BETWEEN SAID FIRST COLLECTOR ELECTRODE AND SAID SECOND BASE ELECTRODE AND GROUND TO SIMULTANEOUSLY ENERGIZE SAID FIRST TRANSISTOR AND TO RENDER SAID SECOND TRANSISTOR CONDUCTIVE.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |