US3191070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor agg device
Assignee: Fairchild Semiconductor Corp
•
Filing: 1963-01-21
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Granted: 1965-06-22
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Brian L Jones
- 👤 Gary W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:14
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0017; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN AGC DEVICE COMPRISING; A TRANSISTOR HAVING AN EMITTER, A BASE, AND A COLLECTOR, SAID TRANSITOR HAVING A CHARACTERISTIC FREQUENCY WHICH DROPS APPRECIABLY IN VALUE WHEN THE D.-C. COLLECTOR CURRENT IS INCREASED BY A FACTOR OF LESS THAN TEN WITHOUT AN APPRECIABLE CHANGE IN THE D.-C. COLLECTOR VOLTAGE; BIASING MEANS FORWARD BIASING SAID TRANSISTOR FOR CURRENT CONDUCTION BETWEEN COLLECTOR AND EMITTER, SAID BIASING MEANS HOLDING SAID COLLECTOR AT A CONSTANT D.-C. VOLTAGES; INPUT MEANS COUPLED TO THE BASE OF SAID TRANSISTOR FOR PASSING AN A.-C. INPUT SIGNAL TO THE DEVICE; AND OUTPUT MEANS ELECTRICALLY ISOLATED FROM SAID INPUT MEANS COUPLED TO THE COLLECTOR OF SAID TRANSISTOR, WHEREBY THE A.-C. CURRENT GAIN FROM THE INPUT TO THE OUTPUT IS REDUCED AS A RESULT OF THE SAID DROP IN CHARACTERISTIC FREQUENCY.
Claim 2
Dependent Claim
129 words
AN AGC DEVICE COMPRISING; A TRANSISTOR HAVING AN EMITTER, A BASE, AND A COLLECTOR, SAID TRANSITOR HAVING A CHARACTERISTIC FREQUENCY WHICH DROPS APPRECIABLY IN VALUE WHEN THE D.-C. COLLECTOR CURRENT IS INCREASED BY A FACTOR OF LESS THAN TEN WITHOUT AN APPRECIABLE CHANGE IN THE D.-C. COLLECTOR VOLTAGE; BIASING MEANS FORWARD BIASING SAID TRANSISTOR FOR CURRENT CONDUCTION BETWEEN COLLECTOR AND EMITTER, SAID BIASING MEANS HOLDING SAID COLLECTOR AT A CONSTANT D.-C. VOLTAGES; INPUT MEANS COUPLED TO THE BASE OF SAID TRANSISTOR FOR PASSING AN A.-C. INPUT SIGNAL TO THE DEVICE; AND OUTPUT MEANS ELECTRICALLY ISOLATED FROM SAID INPUT MEANS COUPLED TO THE COLLECTOR OF SAID TRANSISTOR, WHEREBY THE A.-C. CURRENT GAIN FROM THE INPUT TO THE OUTPUT IS REDUCED AS A RESULT OF THE SAID DROP IN CHARACTERISTIC FREQUENCY.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |