US4242536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-stabilized multifilamentary superconductor
Assignee: Airco Inc
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Filing: 1979-01-17
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Granted: 1980-12-30
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Expires: 1999-01-17
Abstract
Abstract A multifilamentary superconductor having a large number of NbTi filaments in an aluminum alloy matrix which is stabilized by a high-purity aluminum sheath is disclosed, together with the method of its manufacture. An Al alloy billet having a number of NbTi rods disposed therein is extruded. A superpure Al sheath is added; this product is then enclosed in copper and wiredrawn after which the copper is etched off.
Inventors
- 👤 Morris S. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:24
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; H10N60/01; H10N60/0156; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877; Y10S505/917; Y10S505/918; Y10S505/928; Y10S505/929; Y10S505/93; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A composite superconductor comprising a plurality of superconductive filaments symmetrically dispersed in a matrix of aluminum alloy having substantially the electrical and thermal conductivity and the mechanical properties of an alloy of at least 99.00% Al and 0.05-0.20% Cu, said matrix being in intimate contact with a surrounding stabilizing sheath of aluminum of nominal 99.999% purity.
Claim 2
Dependent Claim
56 words
A composite superconductor comprising a plurality of superconductive filaments symmetrically dispersed in a matrix of aluminum alloy having substantially the electrical and thermal conductivity and the mechanical properties of an alloy of at least 99.00% Al and 0.05-0.20% Cu, said matrix being in intimate contact with a surrounding stabilizing sheath of aluminum of nominal 99.999% purity.
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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |