US2943005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of alloying semiconductor material
Assignee: RCA Corp
•
Filing: 1957-01-17
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Granted: 1960-06-28
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Expires: 1977-01-17
Abstract
No abstract record available.
Inventors
- 👤 Arnold S Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:14
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/974; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF MAKING SEMICONDUCTOR DEVICES COMPRISING SEPARATELY PREHEATING A MONATOMIC SEMICONDUCTIVE WAFER AND AN ELECTRODE PELLET CONTAINING CONDUCTIVITY TYPE-DETERMINING MATERAL IN A REDUCING ATOMOSPHERE TO A TEMPERATURE SUFFICIENT TO REMOVE SURFACE IMPURITIES THEREFROM, CONTACTING SAID PELLET TO A MAJOR SURFACE OF SAID WAFER WHILE BOTH PELLET AND WAFER REMAIN IN THE PREHEATED STATE AND IN SAID ATMOSPHERE, AND FURTHER HEATING
Claim 2
Independent Claim
61 words
THE METHOD OF MAKING SEMICONDUCTOR DEVICES COMPRISING SEPARATELY PREHEATING A MONATOMIC SEMICONDUCTIVE WAFER AND AN ELECTRODE PELLET CONTAINING CONDUCTIVITY TYPE-DETERMINING MATERAL IN A REDUCING ATOMOSPHERE TO A TEMPERATURE SUFFICIENT TO REMOVE SURFACE IMPURITIES THEREFROM, CONTACTING SAID PELLET TO A MAJOR SURFACE OF SAID WAFER WHILE BOTH PELLET AND WAFER REMAIN IN THE PREHEATED STATE AND IN SAID ATMOSPHERE, AND FURTHER HEATING
References Cited (Backward Citations)
US2575324A
Cited
US2805968A
Cited
US2731704A
Cited
US2756483A
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US2796368A
Cited
US2850412A
Cited
US2830920A
Cited
US2825667A
Cited
US2857296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |