Patent US2282271A successfully refreshed from Google Patents.
US3559005A
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Integrated planar varactor diode
Assignee: Texas Instruments Inc
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Filing: 1969-03-07
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Granted: 1971-01-26
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Expires: 1989-03-07
Abstract
Abstract DISCLOSED IN A PLANAR VARACTOR DIODE AND A METHOD OF PRODUCING THE SAME FOR INTEGRATED APPLICATIONS, ESPECIALLY AT HIGH FRQUENCIES. THIS DIODE HAS LOW LEAKAGE CURRENTS, IMPROVE REVERSE BIAS CHARACTERISTICS, AND REDUCED JUNCTION AND MOS CAPACITANCE. THE LOW LEAKAGE CURRENTS ARE OBTAINED BY MINIMIZING THE SURFACE PERIMETER OF THE DEVICE, THE LOW JUNCTION CAPACITANCE IS ATTAINED BY REDUCING THE JUNCTION AREA OF THE TWO ACTIVE REGIONS AND THE REDUCED MOS CAPACITANCE IS ACHIEVED BY FORMING A CAVITY BENEATH THE CONTACT OF THE ANODE REGION OR BY OFFSETTING THE ANODE REGION UNDERNEATH THE ANODE CONTACT.
Inventors
- 👤 George D Vendelin
- 👤 Roger R Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:06
CPC Classifications
H; H10; H10D; H10D99/00; H10D1/00; H10D1/40; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/05
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 |