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US5663528A Expired / Lapsed US ⏱️ 0.0 years remaining

Oxide superconductive wire and process for manufacturing the same

Assignee: National Institute for Materials Science
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Filing: 1993-12-21
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Granted: 1997-09-02
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Expires: 2013-12-21
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Abstract

Abstract A clad superconductive wire or tape of an oxide superconductive material and a silver-copper alloy base containing 0.05-90 atomic % copper or a silver alloy. The silver-copper alloy base contains one or more elements selected from the group of Zr, Hf, Al, V, Nb and Ta in amounts of from 0.01-3 atomic %, or contains Au in amounts of 0.01-10 atomic %. The silver alloy contains one or more elements selected from the group of Ti, Zr, Hf, V, Nb, Ta, Mg, Ca, Sr and Ba in amounts of from 0.01 to 3 atomic %, or one or more elements selected from the group of Au, Al, Ga, In and Sn in amounts of 0.05 to 5 atomic %. The base material is filled with a Bi-containing oxide of Bi 1 Pb u Sr x Ca y Cu z O w wherein u=0-0.3, X=0.8-1.2, y=0.2-1.2, and z=0.8-2.0, and processed to obtain a superconductive wire or tape having enhanced mechanical strength, superconductivity and plastic workability.

Inventors

  • 👤 Yoshiaki Tanaka
  • 👤 Tomoyuki Yanagiya
  • 👤 Fumiaki Matsumoto
  • 👤 Masao Fukutomi
  • 👤 Toshihisa Asano
  • 👤 Kazunori Komori
  • 👤 Hiroshi Maeda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 02:00
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0801; H10N60/20; H10N60/203; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 60 words
A clad oxide superconductive wire or tape comprising an oxide superconductive material and a base, wherein said base is a silver-copper alloy containing copper in amounts of from 0.05 to 90 atomic % and one or more elements selected from the group consisting of Zr, Hf, Al, V, Nb and Ta in amounts of from 0.01-3 atomic % in total.
Claim 2
Dependent Claim 60 words
A clad oxide superconductive wire or tape comprising an oxide superconductive material and a base, wherein said base is a silver-copper alloy containing copper in amounts of from 0.05 to 90 atomic % and one or more elements selected from the group consisting of Zr, Hf, Al, V, Nb and Ta in amounts of from 0.01-3 atomic % in total.
Claim 3
Dependent Claim 41 words
The superconductive wire or tape according to claim 1, wherein the oxide superconductive material is a Bi-containing oxide superconductive material represented by Bi 1 Pb u Sr x Ca y Cu z O w , wherein u=0-0.3, x=0.8-1.2, y=0.2-1.2, and z=0.8-2.0.
Claim 4
Dependent Claim 92 words
A process for preparing a clad oxide superconductive wire or tape comprising an oxide superconductive material and a base, wherein said base is a silver-copper alloy containing copper in amounts of from 0.05 to 90 atomic % and one or more elements selected from the group consisting of Zr, Hf, Al, V, Nb and Ta in amounts of from 0.01-3 atomic % in total, which process comprises forming a composite of the oxide superconductive material and base, shaping the composite to form a wire or tape, and heating the wire or tape.
Claim 5
Dependent Claim 92 words
A process for preparing a clad oxide superconductive wire or tape comprising an oxide superconductive material and a base, wherein said base is a silver-copper alloy containing copper in amounts of from 0.05 to 90 atomic % and one or more elements selected from the group consisting of Zr, Hf, Al, V, Nb and Ta in amounts of from 0.01-3 atomic % in total, which process comprises forming a composite of the oxide superconductive material and base, shaping the composite to form a wire or tape, and heating the wire or tape.

References Cited (Backward Citations)

US4906609A Cited
US4866032A Cited
US5075285A Cited
US5194420A Cited
US5104849A Cited
US5384307A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-09-01 2001-03-03 2001-09-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-09-01 2005-03-03 2005-09-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-09-01 2009-03-03 2009-09-02 $7700.00 Window Closed / Lapsed

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