US2639246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for stabilizing semiconductor material
Assignee: General Electric Co
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Filing: 1951-11-29
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Granted: 1953-05-19
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Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:13
CPC Classifications
H; H10; H10P; H10P95/00; G; G01; G01R; G01R31/00; G01R31/26; H01; H01C; H01C17/00; H01C17/30; H10P95/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF STABILIZING THE TEMPERATURE VERSUS RESISTIVITY CHARACTERISTIC OF A GERMANIUM BODY HAVING AN ORIGINAL RESISTIVITY BETWEEN 1 AND 20 OHM CENTIMETERS AT ROOM TEMPERATURE, WHICH METHOD COMPRISES CYCLICALLY RAISING AND LOWERING THE TEMPERATURE OF THE BODY FOR SEVERAL TIMES OVER A TEMPERATURE RANGE INCLUDING TWO DIFFERENT TEMPERATURES AT LEAST 50 DEGREES A PART LYING BETWEEN 0 AND 200 DEGREES CENTIGRADE AND CORRESPONDING TO THE OPERATING TEMPERATURE RANGE OF THE BODY.
Claim 2
Independent Claim
72 words
THE METHOD OF STABILIZING THE TEMPERATURE VERSUS RESISTIVITY CHARACTERISTIC OF A GERMANIUM BODY HAVING AN ORIGINAL RESISTIVITY BETWEEN 1 AND 20 OHM CENTIMETERS AT ROOM TEMPERATURE, WHICH METHOD COMPRISES CYCLICALLY RAISING AND LOWERING THE TEMPERATURE OF THE BODY FOR SEVERAL TIMES OVER A TEMPERATURE RANGE INCLUDING TWO DIFFERENT TEMPERATURES AT LEAST 50 DEGREES A PART LYING BETWEEN 0 AND 200 DEGREES CENTIGRADE AND CORRESPONDING TO THE OPERATING TEMPERATURE RANGE OF THE BODY.
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) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |