US3119075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bandpass amplifier circuits utilizing an inductive transistor
Assignee: Raytheon Co
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Filing: 1961-04-03
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Granted: 1964-01-21
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Johann G Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:19
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/06; H03F; H03F1/00; H03F1/30; H03H11/46; H03H11/48; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03H1/00; H03H2001/0021; H03H2001/0064
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A CIRCUIT RESPONSIVE TO SIGNAL FOR PROVIDING UNIDIRECTIONAL POWER GAIN BETWEEN AN INPUT TERMINAL AND AN OUTPUT TERMINAL COMPRISING A FIRST TRANSISTOR HAVING EMITTER, COLLECTOR AND BASE REGIONS AND HAVING EMITTER, COLLECTOR AND BASE ELECTRODES JOINED TO SAID RESPECTIVE REGIONS, SAID EMITTER ELECTRODE BEING COUPLED TO SAID INPUT TERMINAL AND SAID BASE ELECTRODE BEING COUPLED TO A CONDUCTIVE ELEMENT, A SOURCE OF EMITTER CURRENT COUPLED TO SAID EMITTER ELECTRODE, A SOURCE OF BIASING POTENTIAL COUPLED TO SAID COLLECTOR ELECTRODE FOR BIASING SAID FIRST TRANSISTOR TO PRODUCE AVALANCHE MULTIPLICATION THEREIN SUCH THAT THE RESULTANT NEGATIVE RESISTANCE IN THE EMITTER-BASE CIRCUIT IS
References Cited (Backward Citations)
US3001146A
Cited
US2986657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |