Patent US3439290A successfully refreshed from Google Patents.
US3439290A
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Gunn-effect oscillator
Assignee: Fujitsu Ltd
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Filing: 1966-05-26
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Granted: 1969-04-15
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Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Masaichi Shinoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:05
CPC Classifications
H; H10; H10N; H10N80/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN OSCILLATOR COMPRISING A SEMICONDUCTOR DEVICE HAVING THREE REGIONS AND TWO ASYMMETRICALLY CONDUCTIVE JUNCTIONS BETWEEN THE INTERMEDIATE REGION AND THE RESPECTIVE OUTER REGIONS, SAID INTERMEDIATE REGIONS BEING FORMED OF III-V SEMICONDUCTOR COMPOUND, SAID DEVICE HAVING RESPECTIVE TERMIANL CONTACTS ON SAID OUTER REGIONS; CIRCUIT MEANS CONNECTED TO 18 SAID CONTACTS AND HAVING BETWEEN SAID CONTACTS A VOLTAGE V WHICH AT LEAST AT REPETITIVE MOMENTS CORRESPONDS TO THE MAGITUDE
Claim 2
Dependent Claim
67 words
AN OSCILLATOR COMPRISING A SEMICONDUCTOR DEVICE HAVING THREE REGIONS AND TWO ASYMMETRICALLY CONDUCTIVE JUNCTIONS BETWEEN THE INTERMEDIATE REGION AND THE RESPECTIVE OUTER REGIONS, SAID INTERMEDIATE REGIONS BEING FORMED OF III-V SEMICONDUCTOR COMPOUND, SAID DEVICE HAVING RESPECTIVE TERMIANL CONTACTS ON SAID OUTER REGIONS; CIRCUIT MEANS CONNECTED TO 18 SAID CONTACTS AND HAVING BETWEEN SAID CONTACTS A VOLTAGE V WHICH AT LEAST AT REPETITIVE MOMENTS CORRESPONDS TO THE MAGITUDE
References Cited (Backward Citations)
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Cited
US2914665A
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US2975377A
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US3160828A
Cited
US3040188A
Cited
US3270293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |