US3363166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor modulator
Assignee: Hitachi Ltd
•
Filing: 1966-04-01
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Granted: 1968-01-09
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Expires: 1986-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ohashi Shinichi
- 👤 Kubo Masaharu
- 👤 Takagi Toshijiro
- 👤 Abe Zenmon
- 👤 Ono Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:46
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/36; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A SEMICONDUCTOR MODULATOR CHARACTERIZED BY A SWITCHING INSULATED GATE FIELD EFFECT TRANSISTOR HAVING GATE ELECTRODE, SOURCE ELECTRODE AND DRAIN ELECTRODE, AN EXCITING VOLTAGE SOURCE CONNECTED TO SAID GATE ELECTRODE AND ONE OF THE REMAINING ELECTRODES, AN INPUT SIGNAL SOURCE CONNECTED BETWEEN SAID SOURCE ELECTRODE AND DRAIN ELECTRODE, A LOAD IMPEDANCE TO WHICH THE OUTPUT OF SAID INPUT SIGNAL CHOPPED WITH THE FREQUENCY OF SAID EXCITING VOLTAGE SOURCE IS FED, AN OFFSET COMPENSATING SEMICONDUCTOR DEVICE HAVING THE SAME KIND OF JUNCTION AS THE JUNCTION BETWEEN SAID GATE ELECTRODE AND ONE OF SAID REMAINING ELECTRODES OF SAID SWITCHING TRANSISTOR, AND AN AUXILIARY VOLT-
Claim 2
Dependent Claim
101 words
A SEMICONDUCTOR MODULATOR CHARACTERIZED BY A SWITCHING INSULATED GATE FIELD EFFECT TRANSISTOR HAVING GATE ELECTRODE, SOURCE ELECTRODE AND DRAIN ELECTRODE, AN EXCITING VOLTAGE SOURCE CONNECTED TO SAID GATE ELECTRODE AND ONE OF THE REMAINING ELECTRODES, AN INPUT SIGNAL SOURCE CONNECTED BETWEEN SAID SOURCE ELECTRODE AND DRAIN ELECTRODE, A LOAD IMPEDANCE TO WHICH THE OUTPUT OF SAID INPUT SIGNAL CHOPPED WITH THE FREQUENCY OF SAID EXCITING VOLTAGE SOURCE IS FED, AN OFFSET COMPENSATING SEMICONDUCTOR DEVICE HAVING THE SAME KIND OF JUNCTION AS THE JUNCTION BETWEEN SAID GATE ELECTRODE AND ONE OF SAID REMAINING ELECTRODES OF SAID SWITCHING TRANSISTOR, AND AN AUXILIARY VOLT-
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |