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Patent US4921833A successfully refreshed from Google Patents.
US4921833A
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Superconducting member
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1988-05-25
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Granted: 1990-05-01
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Expires: 2008-05-25
Abstract
Abstract A superconducting member comprising a first film including least a single ceramic layer formed on the surface of a substrate of an arbitrary base material. A film of an oxide superconductor is formed on the first film. In a useful embodiment, the substrate is stainless steel, and the first ceramic layer by zirconium oxide. This superconducting member can be formed as a superconducting tape, a superconducting wire or the like.
Inventors
- 👤 Satoshi Takano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; H10N60/203; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0408; H10N60/0576; H10N60/0632; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/702; Y10S505/704; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
64 words
A superconducting member comprising: a substrate of a base material having a major surface; a first film, including at least a single layer between 0.02 μm and 2 μm thick of a ceramic material which is non-water-soluble and which does not absorb water, formed on said major surface of said substrate; and a second film containing an oxide superconductor formed on said first film.
Claim 2
Dependent Claim
64 words
A superconducting member comprising: a substrate of a base material having a major surface; a first film, including at least a single layer between 0.02 μm and 2 μm thick of a ceramic material which is non-water-soluble and which does not absorb water, formed on said major surface of said substrate; and a second film containing an oxide superconductor formed on said first film.
Claim 3
Dependent Claim
15 words
A superconducting member in accordance with claim 1, wherein said base material is a metal.
Claim 4
Dependent Claim
15 words
A superconducting member in accordance with claim 1, wherein said base material is a semiconductor.
Claim 5
Dependent Claim
15 words
A superconducting member in accordance with claim 1, wherein said base material is a ceramics.
Claim 6
Dependent Claim
15 words
A superconducting member in accordance with claim 2, wherein said base material is stainless steel.
Claim 7
Dependent Claim
16 words
A superconducting member in accordance with claim 1, wherein said ceramic layer comprises a metal oxide.
Claim 8
Dependent Claim
15 words
A superconducting member in accordance with claim 6, wherein said metal oxide includes zirconium oxide.
Claim 9
Dependent Claim
15 words
A superconducting member in accordance with claim 6, wherein said metal oxide includes strontium titanate.
Claim 10
Dependent Claim
21 words
A superconducting member in accordance with claim 1, wherein said first film includes at least a single layer having uniaxial orientations.
Claim 11
Dependent Claim
15 words
A superconducting member in accordance with claim 9, wherein said uniaxial orientation includes C-axis orientation.
Claim 12
Dependent Claim
18 words
A superconducting member in accordance with claim 1, wherein said first film is formed by physical vapor deposition.
Claim 13
Dependent Claim
18 words
A superconducting member in accordance with claim 1, wherein said first film is formed by chemical vapor deposition.
Claim 14
Dependent Claim
18 words
A superconducting member in accordance with claim 1, wherein said second film is formed by physical vapor deposition.
Claim 15
Dependent Claim
15 words
A superconducting member in accordance with claim 1, wherein said oxide superconductor contains copper ions.
Claim 16
Dependent Claim
18 words
A superconducting member in accordance with claim 14, wherein said oxide superconductor has oxygen deficiency type perovskite structure.
Claim 17
Dependent Claim
17 words
A superconducting member in accordance with claim 15, wherein said oxide superconductor includes a Y-Ba-Cu-O oxide superconductor.
References Cited (Backward Citations)
EP0284489A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |