US3573978A
Expired / Lapsed
US
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Method of producing layers of the intermetallic superconducting compound niobium tin (nb3sn) on a carrier
Assignee: Siemens AG
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Filing: 1968-08-02
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Granted: 1971-04-06
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Expires: 1988-08-02
Abstract
Abstract DESCRIBED IS A METHOD OF PRODUCING LAYERS OF THE INTERMETALLIC SUPERCONDUCTING COMPOUND NIOBIUM TIN (NB3SN) UPON A CARRIER. THE METHOD IS CHARACTERIZED IN THAT CHLORINE GAS IS PASSED ACROSS HEATED NIOBIUM TO PRODUCE GASEOUS NIOBIUM CHLORIDE. SEPARATELY THEREFROM BROMINE GAS IS PASSED ACROSS HEATED TIN TO PRODUCE TIN BROMIDE. SUBSEQUENTLY THE HALOGENS ARE MIXED AND REDUCED BY HYDROGEN UPON A HEATED CARRIER IN A REACTION VESSEL.
Inventors
- 👤 Kyongmin Kim
- 👤 Gunther Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:50
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/08; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/818; Y10S505/819
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |