US3213299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linearized field-effect transistor circuit
Assignee: RCA Corp
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Filing: 1963-05-20
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Granted: 1965-10-19
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Gordon F Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:35
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/387; H03F3/393; H03F3/04; H03F3/16; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/007; H03H; H03H11/00; H03H11/02; H03H11/24; H03H11/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN COMBINATION, A SEMICONDUCTOR DEVICE HAVING FIRST AND SECOND ELECTRODES DEFINING A CURRENT PATH AND A CONTROL ELECTRODE FOR CONTROLLING THE RESISTANCE EXHIBITTED BY SAID CURRENT PATH AS A FUNCTION OF A VOLTAGE APPLIED TO SAID CONTROL ELECTRODE, A PAIR OF SIGNAL INPUT TERMINALS, A PAIR OF SIGNAL OUTPUT TERMINALS, MEANS INCLUDING SAID SEMICONDUCTOR DEVICE COUPLING SAID SIGNAL INPUT AND OUTPUT TERMINALS TO CONTROL THE EFFICIENCY OF TRANSLATION BETWEEN SAID TERMINALS AS A FUNCTION OF THE RESISTANCE EXHIBITED BY SAID CURRENT PATH, SAID MEANS INCLUDING A FEEDBACK CIRCUIT INCLUDING A CAPACITOR FOR APPLYING A PORTION OF THE SIGNAL VOLTAGE DEVELOPED ACROSS SAID CURRENT PATH TO SAID CONTROL ELECTRODE, AND MEANS COUPLED BETWEEN SAID CONTROL ELECTRODE AND IN COMMON TO ONE OF SAID INPUT AND OUTPUT TERMINALS FOR APPLYING A CONTROL VOLTAGE TO CONTROL THE RESISTANCE EXHIBITED BY SAID CURRENT PATH.
Claim 2
Dependent Claim
140 words
IN COMBINATION, A SEMICONDUCTOR DEVICE HAVING FIRST AND SECOND ELECTRODES DEFINING A CURRENT PATH AND A CONTROL ELECTRODE FOR CONTROLLING THE RESISTANCE EXHIBITTED BY SAID CURRENT PATH AS A FUNCTION OF A VOLTAGE APPLIED TO SAID CONTROL ELECTRODE, A PAIR OF SIGNAL INPUT TERMINALS, A PAIR OF SIGNAL OUTPUT TERMINALS, MEANS INCLUDING SAID SEMICONDUCTOR DEVICE COUPLING SAID SIGNAL INPUT AND OUTPUT TERMINALS TO CONTROL THE EFFICIENCY OF TRANSLATION BETWEEN SAID TERMINALS AS A FUNCTION OF THE RESISTANCE EXHIBITED BY SAID CURRENT PATH, SAID MEANS INCLUDING A FEEDBACK CIRCUIT INCLUDING A CAPACITOR FOR APPLYING A PORTION OF THE SIGNAL VOLTAGE DEVELOPED ACROSS SAID CURRENT PATH TO SAID CONTROL ELECTRODE, AND MEANS COUPLED BETWEEN SAID CONTROL ELECTRODE AND IN COMMON TO ONE OF SAID INPUT AND OUTPUT TERMINALS FOR APPLYING A CONTROL VOLTAGE TO CONTROL THE RESISTANCE EXHIBITED BY SAID CURRENT PATH.
References Cited (Backward Citations)
US3102230A
Cited
US3131312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |