Patent US3157541A successfully refreshed from Google Patents.
US3157541A
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Precipitating highly pure compact silicon carbide upon carriers
Assignee: Siemens and Halske AG
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Filing: 1959-09-25
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Granted: 1964-11-17
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Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 Heywang Walter
- 👤 Sirtl Erhard
- 👤 Kappelmeyer Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/977; C01B33/00; C01B33/02; C04B41/45; C04B41/50; C04B41/5053; C04B41/5057; C04B41/5059; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C23; C23C; C23C16/00; C23C16/01; C23C16/22; C23C16/30; C23C16/32; C23C16/325; C30; C30B; C30B15/00; C30B15/10; C30B35/00; C30B35/002; H; H10; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/832; H10D62/8325; Y; Y10; Y10S; Y10S148/00; Y10S148/148; Y10S438/00; Y10S438/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF PRODUCING HIGHLY PURE SILICON CARBIDE BY PRECIPITATION THEREOF FROM A GASEOUS PHASE UPON A SUITABLE CARIER, COMPRISING CAUSING AMIXTURE OF HIGHLY PURE GASEOUS SILICON COMPOUND AND HYDROCARBON SUBSTANCE TO FLOW PAST A CARRIER OF PURE SILICON WHLE AINTAINING THE SURFACE TEMPERATURE THEREOF ABOVE THE FORMATION THRESHOLD OF SILICON CARBIDE (ABOVE ABOUT 1150*C.) BUT BELOW THE MELTING POIN OF SILICON (ABOUT 1430*C.) TO CAUSE THERMAL DECOMPOSITION OF SAID MIXTURE UPON
Claim 2
Independent Claim
72 words
A METHOD OF PRODUCING HIGHLY PURE SILICON CARBIDE BY PRECIPITATION THEREOF FROM A GASEOUS PHASE UPON A SUITABLE CARIER, COMPRISING CAUSING AMIXTURE OF HIGHLY PURE GASEOUS SILICON COMPOUND AND HYDROCARBON SUBSTANCE TO FLOW PAST A CARRIER OF PURE SILICON WHLE AINTAINING THE SURFACE TEMPERATURE THEREOF ABOVE THE FORMATION THRESHOLD OF SILICON CARBIDE (ABOVE ABOUT 1150*C.) BUT BELOW THE MELTING POIN OF SILICON (ABOUT 1430*C.) TO CAUSE THERMAL DECOMPOSITION OF SAID MIXTURE UPON
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |