Patent US5047389A successfully refreshed from Google Patents.
US5047389A
Expired / Lapsed
US
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Substrate for ceramic superconductor
Assignee: Shimabun Co Ltd
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Filing: 1988-10-31
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Granted: 1991-09-10
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Expires: 2008-10-31
Abstract
Abstract A substrate for supporting a ceramic superconductor comprises a metallic base member having a constituent oxide former which establishes an oxide layer on the surface of the substrate. A layer of ceramic superconducting material covers the substrate with the oxide layer between the metallic base member and the ceramic superconductor layer to inhibit the interdiffusion of respective constituent elements between the metallic base member and the ceramic layer. For applications requiring the transmission of electrical current through the ceramic layer over relatively extensive distances, the substrate can be formed as a wire.
Inventors
- 👤 Lawrence D. Woolf
- 👤 Frederick H. Elsner
- 👤 William A. Raggio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:13
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0576; H10N60/0632; 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
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A structure for supporting a ceramic superconducting material having oxygen and copper constituents, which comprises: a metallic substrate having an oxide former constituent; and an oxide layer formed by said oxide former on the surface of said substrate to substantially inhibit interdiffusion between said substrate and said ceramic superconducting material when said ceramic material is bonded to said substrate, wherein said oxide former is a material selected from the group consisting of aluminum (Al), silicon (Si), manganese (Mn), magnesium (Mg), zirconium (Zr), and combinations thereof.
Claim 2
Dependent Claim
85 words
A structure for supporting a ceramic superconducting material having oxygen and copper constituents, which comprises: a metallic substrate having an oxide former constituent; and an oxide layer formed by said oxide former on the surface of said substrate to substantially inhibit interdiffusion between said substrate and said ceramic superconducting material when said ceramic material is bonded to said substrate, wherein said oxide former is a material selected from the group consisting of aluminum (Al), silicon (Si), manganese (Mn), magnesium (Mg), zirconium (Zr), and combinations thereof.
Claim 3
Dependent Claim
46 words
A structure for supporting a ceramic superconducting material as recited in claim 1 further comprising an interface layer between said oxide layer and said ceramic to establish an interaction zone comprising said oxide layer and said interface layer between said ceramic superconducting material and said substrate.
Claim 4
Dependent Claim
40 words
A structure for supporting a ceramic superconducting material as recited in claim 2 wherein said interaction zone is greater than approximately five microns in depth and said layer of ceramic superconducting material is greater than approximately fifty microns in depth.
Claim 5
Dependent Claim
23 words
A structure for supporting a ceramic superconducting material as recited in claim 3 wherein said substrate is an elongated substantially cylindrical shaped wire.
Claim 6
Dependent Claim
37 words
A structure for supporting a ceramic superconducting material as recited in claim 4 wherein said oxide layer is concentric with said substrate and said ceramic superconducting material is formed as a layer concentric with said oxide layer.
Claim 7
Dependent Claim
19 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said oxide former is aluminum.
Claim 8
Dependent Claim
19 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said oxide former is silicon.
Claim 9
Dependent Claim
19 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said oxide former is manganese.
Claim 10
Dependent Claim
19 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said oxide former is magnesium.
Claim 11
Dependent Claim
19 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said oxide former is zirconium.
Claim 12
Dependent Claim
27 words
A structure for supporting a ceramic superconducting material as recited in claim 5 wherein said ceramic superconducting material is RE Ba 2 Cu 3 O 7-x .
Claim 13
Dependent Claim
21 words
A structure for supporting a ceramic superconducting material as recited in claim 11 wherein said substrate comprises iron, chromium and aluminum.
Claim 14
Dependent Claim
22 words
A structure for supporting a ceramic superconducting material as recited in claim 11 wherein said substrate comprises nickel, aluminum, silicon and manganese.
Claim 15
Dependent Claim
21 words
A structure for supporting a ceramic superconducting material as recited in claim 11 wherein said substrate comprises nickel, chromium, and silicon.
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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |