Patent US2708646A successfully refreshed from Google Patents.
US2708646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making germanium alloy semiconductors
Assignee: Raytheon Co
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Filing: 1951-05-09
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Granted: 1955-05-17
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Expires: 1971-05-09
Abstract
No abstract record available.
Inventors
- 👤 Harper Q North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
H; H10; H10P; H10P10/00; H10P10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF MAKING A GERMANIUM ALLOY SEMICONDUCTOR HAVING BOTH P-TYPE AND REGIONS BY THE ADDITION OF AN ACCEPTOR IMPURITY TO A SPECIMEN OF N-TYPE GERMANIUM, SAID METHOD COMPRISING THE STEPS OF MELTING A PORTION OF THE SPECIMEN, SPREADING THE INPURITY THROUGH THE MOLTEN PORTION OF THE SPECIMEN, AN COOLING THE COMBINATION TO SOLIDIFY THE MOLTEN PORTION OF THE SPECIMEN, TOGETHER WITH THE ACCEPTOR IMPURITY, AS A P-TYPE REGION IN RECTIFYING RELATIONSHIP WITH THE REMAINDER OF THE SPECIMEN.
Claim 2
Independent Claim
78 words
THE METHOD OF MAKING A GERMANIUM ALLOY SEMICONDUCTOR HAVING BOTH P-TYPE AND REGIONS BY THE ADDITION OF AN ACCEPTOR IMPURITY TO A SPECIMEN OF N-TYPE GERMANIUM, SAID METHOD COMPRISING THE STEPS OF MELTING A PORTION OF THE SPECIMEN, SPREADING THE INPURITY THROUGH THE MOLTEN PORTION OF THE SPECIMEN, AN COOLING THE COMBINATION TO SOLIDIFY THE MOLTEN PORTION OF THE SPECIMEN, TOGETHER WITH THE ACCEPTOR IMPURITY, AS A P-TYPE REGION IN RECTIFYING RELATIONSHIP WITH THE REMAINDER OF THE SPECIMEN.
References Cited (Backward Citations)
US1565496A
Cited
US2402839A
Cited
US2402582A
Cited
US2514879A
Cited
GB632942A
Cited
US2505633A
Cited
US2504628A
Cited
US2447829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |