US3225317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative resistance circuit unit and circuits therefor
Assignee: Sony Corp
•
Filing: 1961-02-28
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Granted: 1965-12-21
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Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Yasnda Junichi
- 👤 Tadama Motomu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/58; H03B; H03B7/00; H03B7/02; H03B7/06; H03B7/08; H03C; H03C1/00; H03C1/36; H03C3/00; H03D; H03D7/00; H03D7/02; H03D7/04; H03F; H03F3/00; H03F3/04; H03F3/10; H03F3/12; H03K3/00; H03K3/02; H03K3/313; H03K3/315; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A MODULATOR COMPRISING AN OSCILLATOR GENERATING A SIGNAL AND HAVING A TUNNEL DIODE, A CONNECTING MEANS CONNECTED TO SAID TUNNEL DIODE, A TRANSDUCER HAVING A BACKWARD DIODE CONNECTED TO SAID OSCILLATOR THROUGH SAID CONNECTING MEANS, A BIAS SOURCE SUPPLYNG A BIAS VOLTAGE TO SAID BACKWARD DIODE, AND A SIGNAL SOURCE SUPPLYING A SIGNAL TO SAID BACKWARD DIODE TRANSDUCER WHEREBY SAID BACKWARD DIODE TRANSDUCER VARIES THE AMPLITUDE OF SAID OSCILLATOR SIGNAL.
Claim 2
Dependent Claim
70 words
A MODULATOR COMPRISING AN OSCILLATOR GENERATING A SIGNAL AND HAVING A TUNNEL DIODE, A CONNECTING MEANS CONNECTED TO SAID TUNNEL DIODE, A TRANSDUCER HAVING A BACKWARD DIODE CONNECTED TO SAID OSCILLATOR THROUGH SAID CONNECTING MEANS, A BIAS SOURCE SUPPLYNG A BIAS VOLTAGE TO SAID BACKWARD DIODE, AND A SIGNAL SOURCE SUPPLYING A SIGNAL TO SAID BACKWARD DIODE TRANSDUCER WHEREBY SAID BACKWARD DIODE TRANSDUCER VARIES THE AMPLITUDE OF SAID OSCILLATOR SIGNAL.
References Cited (Backward Citations)
US2655608A
Cited
US2964637A
Cited
US2981891A
Cited
US2997604A
Cited
US3058009A
Cited
US3122649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |