US3559117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave switching device employing a semiconductor diode
Assignee: NEC Corp
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Filing: 1968-05-31
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Granted: 1971-01-26
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Expires: 1988-05-31
Abstract
Abstract A SEMICONDUCTOR MICROWAVE SWITCHING DEVICE IS DESCRIBED WHEREIN A JUNCTION DIODE IS PLACED IN A WAVEGUIDE AND OPERATED AT LEAST FOR ONE SWITCH POSITION WITH A BIAS VOLTAGE WHICH IS LOWER THAN THE BREAKDOWN VOLTAGE. A SPECIFIC INSTALLATION OF THE DIODE IN A MILLIMETER WAVEGUIDE IS DESCRIBED.
Inventors
- 👤 Shigetoki Sugimot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |