US3121828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode devices and the method of fabrication thereof
Assignee: International Business Machines Corp
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Filing: 1961-09-18
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Granted: 1964-02-18
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Im
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
H; H10; H10P; H10P95/00; C; C22; C22C; C22C11/00; C22C13/00; H10D; H10D99/00; Y; Y10; Y10S; Y10S438/00; Y10S438/979
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A TUNNEL DIODE DEVICE COMPRISING: A BODY OF P-TYPE GERMANIUM SEMICONDUCTOR MATERIAL INCLUDING THE ACTIVE IMPURITY GALLIUM IN THE RANGE OF 1 X 10**19 TO 1 X 10**20 ATOMS PER CUBIC CENTIMETER; A PN JUNCTION IN SAID BODY ESTABLISHED BY ALLOYING THEREWITH A PELLET CONTAINING BY WEIGHT ARSENIC WITHIN THE RANGE OF 0.1 TO 5%, ANTIMONY WITHIN THE RANGE OF 0.1 TO 10%, TIN WITHIN THE RANGE OF 15 TO 80%, AND THE BALANCE LEAD; A CONDUCTIVE PLATE OHMICALLY SOLDERED TO SAID P-TYPE BODY; AND A LEAD CONDUCTIVELY CONNECTED TO SAID ALLOYED PELLET.
References Cited (Backward Citations)
US2983854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |