US4200767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconductor covered with reinforced aluminum matrix
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1977-01-07
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Granted: 1980-04-29
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Expires: 1997-01-07
Abstract
Abstract Disclosed herein is a superconductor covered with a reinforced aluminum matrix, which is obtained by cladding a superconductor with an aluminum matrix reinforced with a very small proportion of alumina dispersed therein and subjecting the clad superconductor to integral forming by codrawing.
Inventors
- 👤 Harehiko Nomura
- 👤 Kenichi Koyama
- 👤 Kazuhiko Terao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:41
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; H10N60/01; H10N60/0128; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887; Y10S505/917; Y10S505/928; Y10S505/93; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
53 words
A superconductor covered with an aluminum matrix of augmented tensile strength, which comprises at least one superconductive wire and an aluminum matrix laid to cover the outer surface of said at least one superconductive wire and having alumina dispersed therein, said at least one superconductive wire and said aluminum matrix having been co-drawn.
Claim 2
Dependent Claim
53 words
A superconductor covered with an aluminum matrix of augmented tensile strength, which comprises at least one superconductive wire and an aluminum matrix laid to cover the outer surface of said at least one superconductive wire and having alumina dispersed therein, said at least one superconductive wire and said aluminum matrix having been co-drawn.
Claim 3
Dependent Claim
28 words
The superconductor according to claim 1, wherein said aluminum matrix has alumina dispersed therein in a total amount of from about 0.3 to about 1.5 percent by volume.
Claim 4
Dependent Claim
36 words
A multifilamentary superconductor comprising a plurality of superconductive wires separated from one another and surrounded by a matrix of composite material consisting essentially of aluminum with alumina dispersed therein, the wires and matrix having been co-drawn.
Claim 5
Dependent Claim
36 words
A multifilamentary superconductor comprising a plurality of superconductive wires separated from one another and surrounded by a matrix of composite material consisting essentially of aluminum with alumina dispersed therein, the wires and matrix having been co-drawn.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |