US3311756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic circuit having a fieldeffect transistor therein
Assignee: Hitachi Ltd
•
Filing: 1964-06-19
•
Granted: 1967-03-28
•
Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Nagata Minoru
- 👤 Ono Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/523; H03F3/00; H03F3/04; H03F3/16; H10; H10D; H10D30/00; H10D30/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A TRANSISTOR AMPLIFIER COMPRISING A FIELD EFFECT TRANSISTOR PROVIDED WITH A SEMICONDUCTOR SUBSTRATE; A CHANNEL LAYER FORMED ON SAID SEMICONDUCTOR SUBSTRATE; SOURCE AND DRAIN ELECTRODES FITTED ON BOTH ENDS OF SAID CHANNEL LAYER; AN INSULATING LAYER FORMED ON SAID CHANNEL LAYER; A FIRST GATE ELECTRODE FIXED ON SAID INSULATING LAYER AND A SECOND GATE ELECTRODE FIXED ON SAID SEMICONDUCTOR SUBSTRATE; A BIAS VOLTAGE SOURCE; AN OPERATING POWER SOURCE; A SIGNAL SOURCE; A LOAD; MEANS TO CONNECT SAID LOAD AND OPERATING POWER SOURCE IN SERIES WITH SAID SOURCE AND DRAIN ELECTRODES; MEANS TO CONNECT SAID BIAS VOLTAGE SOURCE TO ONE OF SAID FIRST AND SECOND GATE ELECTRODES; AND MEANS TO CONNECT SAID SIGNAL SOURCE TO THE OTHER GATE ELECTRODE.
Claim 2
Dependent Claim
118 words
A TRANSISTOR AMPLIFIER COMPRISING A FIELD EFFECT TRANSISTOR PROVIDED WITH A SEMICONDUCTOR SUBSTRATE; A CHANNEL LAYER FORMED ON SAID SEMICONDUCTOR SUBSTRATE; SOURCE AND DRAIN ELECTRODES FITTED ON BOTH ENDS OF SAID CHANNEL LAYER; AN INSULATING LAYER FORMED ON SAID CHANNEL LAYER; A FIRST GATE ELECTRODE FIXED ON SAID INSULATING LAYER AND A SECOND GATE ELECTRODE FIXED ON SAID SEMICONDUCTOR SUBSTRATE; A BIAS VOLTAGE SOURCE; AN OPERATING POWER SOURCE; A SIGNAL SOURCE; A LOAD; MEANS TO CONNECT SAID LOAD AND OPERATING POWER SOURCE IN SERIES WITH SAID SOURCE AND DRAIN ELECTRODES; MEANS TO CONNECT SAID BIAS VOLTAGE SOURCE TO ONE OF SAID FIRST AND SECOND GATE ELECTRODES; AND MEANS TO CONNECT SAID SIGNAL SOURCE TO THE OTHER GATE ELECTRODE.
References Cited (Backward Citations)
US2980809A
Cited
US3191061A
Cited
US3183128A
Cited
US3229218A
Cited
US3202840A
Cited
US3213299A
Cited
US3177100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |