Patent US3181983A successfully refreshed from Google Patents.
US3181983A
Expired / Lapsed
US
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Method for controlling the characteristic of a tunnel diode
Assignee: Unisys Corp
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Filing: 1961-03-06
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Granted: 1965-05-04
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Lape Philip Bruce
- 👤 Kunz Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/26; G01R31/2607; G01R31/2632; H; H10; H10D; H10D99/00; Y; Y10; Y10S; Y10S438/00; Y10S438/979
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A METHOD FOR CONTROLLING THE CURRENT-VOLTAGE CHARACTERISTIC OF A TUMMEL DIODE COMPRISING HE STEPS OF APPLYING A CURRENT HAVING A PREDETERMINED VALUE TO THE TERMINALS OF SAID DIODE, SAID PREDETERMINED VALUE SUBSTANTIALLY EQUALING THE DESIRED PEAK CURRENT VALUE OF SAID CHARACTERISTIC, CONTINUOUSLY MONITORING THE POTENTIAL WHICH APPEARS ACROSS SAID TERMINALS, APPLYING A SOLUTION FOR ETCHING THE JUNCTION SURFACE OF SAID DIODE, AND STOPPING THE ETCHING ACTION OF SAID SOLUTION WHEN A CHANGE IS OVSERVED IN THE MONITORED VALUE OF THE POTENTIAL ACROSS SAID TERMINALS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |