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US5051397A
Expired / Lapsed
US
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Joined body of high-temperature oxide superconductor and method of joining oxide superconductors
Assignee: Hitachi Ltd
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Filing: 1989-11-20
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Granted: 1991-09-24
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Expires: 2009-11-20
Abstract
Abstract The present invention provides a method for joining of high-temperature oxide superconductors per se or a high-temperature oxide superconductor and other conductive material through a very simple process. According to this method, the joining is carried out by using an alloy comprising 0.1%-90% by weight of at least one divalent metallic element and the balance as a brazing material and heating and melting the brazing material. The resulting joined body has a joint low in resistance. The divalent metallic element of the alloy is preferably an element of Group IIA or IIB of the Periodic Table or a transition metal.
Inventors
- 👤 Chie Sato
- 👤 Masahiko Sakamoto
- 👤 Hisanori Okamura
- 👤 Takao Funamoto
- 👤 Masahiro Ogihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:15
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/58; H01R4/68; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; H10; H10N; H10N60/00; H10N60/80; 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: 10
Claim 1
Independent Claim
67 words
A high-temperature oxide superconductor on the surface of which is formed an indium alloy consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium; the metallic element being an element of Group IIA or IIB of the Periodic Table or a transition metal and the resistivity behavior of the alloy being the same as that of the oxide superconductor.
Claim 2
Dependent Claim
67 words
A high-temperature oxide superconductor on the surface of which is formed an indium alloy consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium; the metallic element being an element of Group IIA or IIB of the Periodic Table or a transition metal and the resistivity behavior of the alloy being the same as that of the oxide superconductor.
Claim 3
Dependent Claim
83 words
A high-temperature oxide superconductor wire which comprises high-temperature oxide superconductor wires per se or a high-temperature oxide superconductor wire and a metal wire which are joined by an indium alloy consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium; the metallic element being an element of Group IIA or IIB of the Periodic Table or a transition metal and the resistivity behavior of the alloy being the same as that of the oxide superconductor.
Claim 4
Dependent Claim
83 words
A high-temperature oxide superconductor wire which comprises high-temperature oxide superconductor wires per se or a high-temperature oxide superconductor wire and a metal wire which are joined by an indium alloy consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium; the metallic element being an element of Group IIA or IIB of the Periodic Table or a transition metal and the resistivity behavior of the alloy being the same as that of the oxide superconductor.
Claim 5
Dependent Claim
60 words
A high-temperature oxide superconductor article which comprises an oxide superconductor joined to another oxide superconductor or a metal conductor with an indium alloy as a solder consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium, the temperature-resistance relationship of the alloy being substantially the same as that of said oxide superconductor.
Claim 6
Dependent Claim
60 words
A high-temperature oxide superconductor article which comprises an oxide superconductor joined to another oxide superconductor or a metal conductor with an indium alloy as a solder consisting essentially of 0.1-90% by weight of at least one divalent metallic element and the balance of indium, the temperature-resistance relationship of the alloy being substantially the same as that of said oxide superconductor.
Claim 7
Dependent Claim
26 words
A high-temperature oxide superconductor article according to claim 5, wherein said article is a wire, and said superconductor and metal conductor are in a wire form.
Claim 8
Dependent Claim
26 words
A high-temperature oxide superconductor article according to claim 3, wherein said superconductor is joined at 150°-350° C. to said another oxide superconductor or said metal conductor.
Claim 9
Dependent Claim
29 words
A high-temperature oxide superconductor article according to claim 3, wherein said metallic element is an element of Group IIA or IIB of the Periodic Table or a transition metal.
Claim 10
Dependent Claim
25 words
A high-temperature oxide superconductor article according to claim 3, wherein said alloy consisting essentially of 5-75% by weight of cadmium and the balance of indium.
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) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |