Patent US5019551A successfully refreshed from Google Patents.
US5019551A
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Superconducting contact structure
Assignee: NEC Corp
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Filing: 1988-09-06
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Granted: 1991-05-28
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Expires: 2008-09-06
Abstract
Abstract In a superconducting contact structure between an oxide superconductor and a metal superconductor, the oxide superconductor has a recess in a surface which is in contact with the metal superconductor.
Inventors
- 👤 Mutsuo Hidaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0744; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/702; Y10S505/703; Y10S505/704; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A superconducting contact structure for making an electrical connection between a layer of yttrium-barium-copper oxide superconductor and a layer of metal superconductor formed layer on layer, wherein said oxide superconductor is formed on a substrate and comprises a layered structure with surfaces of said layers being parallel to the surface of said substrate, and has at least one recess formed in a surface of said oxide superconductor, said recess having sidewalls and a bottom surface, all of which are in contact with said metal superconductor.
Claim 2
Dependent Claim
85 words
A superconducting contact structure for making an electrical connection between a layer of yttrium-barium-copper oxide superconductor and a layer of metal superconductor formed layer on layer, wherein said oxide superconductor is formed on a substrate and comprises a layered structure with surfaces of said layers being parallel to the surface of said substrate, and has at least one recess formed in a surface of said oxide superconductor, said recess having sidewalls and a bottom surface, all of which are in contact with said metal superconductor.
Claim 3
Dependent Claim
48 words
A superconducting contact structure according to claim 1, wherein said structure can conduct a large amount of current between said oxide superconductor and said metal superconductor via said side walls, bottom surface, and at least of a portion of a surface between said oxide superconductor and metal superconductor.
Claim 4
Dependent Claim
44 words
A superconducting contact structure according to claim 1, wherein said recess comprises a recess with a vertically tapered side wall, said taper being formed in order to become more narrow in a direction of the thickness of said oxide superconductor from said surface thereof.
Claim 5
Dependent Claim
42 words
A superconducting contact structure according to claim 1, wherein said recess comprises a bottom recess surface with a vertically stepped wall, said steps being formed in a direction of the thickness of said oxide superconductor and extending downwardly from said surface thereof.
Claim 6
Dependent Claim
31 words
A superconducting contact structure according to claim 1, wherein said recess comprises a plurality of recesses formed in a direction of the thickness of said oxide superconductor from said surface thereof.
Claim 7
Dependent Claim
22 words
A superconducting contact structure according to claim 1, wherein said oxide superconductor is connected through an insulating layer to a metal superconductor.
Claim 8
Dependent Claim
71 words
A superconducting contact structure between a layer of yttrium-barium-copper oxide superconductor and a layer of metal superconductor formed layer on layer, wherein said oxide superconductor is formed on a substrate and comprises a layered structure parallel to the substrate, and wherein at least a recess is formed in a surface of said oxide superconductor so that almost all current is supplied in said oxide superconductor and in parallel to said substrate.
Claim 9
Dependent Claim
71 words
A superconducting contact structure between a layer of yttrium-barium-copper oxide superconductor and a layer of metal superconductor formed layer on layer, wherein said oxide superconductor is formed on a substrate and comprises a layered structure parallel to the substrate, and wherein at least a recess is formed in a surface of said oxide superconductor so that almost all current is supplied in said oxide superconductor and in parallel to said substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |