US2651831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor translating device
Assignee: AT&T Inc
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Filing: 1950-07-24
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Granted: 1953-09-15
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Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Walter L Bond
- 👤 Sparks Morgan
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; Y; Y10; Y10S; Y10S117/00; Y10S117/901; Y10S117/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF PREPARING A ROD OF SEMICONDUCTOR MATERIAL COMPOSED OF TWO ELONGATED CRYSTALS OF N-TYPE ELECTRICAL CONDUCTIVITY WITH A LONGITUDINALLY INTERVENING SHEET OF P-TYPE CONDUCTIVITY, WHICH COMPRISES MELTING A MASS OF SEMICONDUCTOR MATERIAL HAVING N-TYPE ELECTRICAL CONDUCTIVITY, MAINTAINING THE MASS AT A TEMPERATURE ABOVE THE MELTING POINT, PARTLY IMMERSING IN THE MELT A PAIR OF ADJOINED ELONGATED SEED SINGLE CRYSTALS OF THE MATERIAL HAVING ALONG THEIR JUNCTION A DIFFERENCE OF THE ORDER OF TEN DEGREES IN CRYSTALLINE ORIENTATION, AND LIFTING THE SEEDS FROM THE MELT AT A RATE SUBSTANTIALLY EQUAL TO THE RATE OF SOLIDIFICATION OF THE UPLIFTED MATERIAL ADHERENT TO THE SEEDS.
Claim 2
Independent Claim
104 words
THE METHOD OF PREPARING A ROD OF SEMICONDUCTOR MATERIAL COMPOSED OF TWO ELONGATED CRYSTALS OF N-TYPE ELECTRICAL CONDUCTIVITY WITH A LONGITUDINALLY INTERVENING SHEET OF P-TYPE CONDUCTIVITY, WHICH COMPRISES MELTING A MASS OF SEMICONDUCTOR MATERIAL HAVING N-TYPE ELECTRICAL CONDUCTIVITY, MAINTAINING THE MASS AT A TEMPERATURE ABOVE THE MELTING POINT, PARTLY IMMERSING IN THE MELT A PAIR OF ADJOINED ELONGATED SEED SINGLE CRYSTALS OF THE MATERIAL HAVING ALONG THEIR JUNCTION A DIFFERENCE OF THE ORDER OF TEN DEGREES IN CRYSTALLINE ORIENTATION, AND LIFTING THE SEEDS FROM THE MELT AT A RATE SUBSTANTIALLY EQUAL TO THE RATE OF SOLIDIFICATION OF THE UPLIFTED MATERIAL ADHERENT TO THE SEEDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |