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US5444425A Expired / Lapsed US ⏱️ 0.0 years remaining

Flux-trapped superconducting magnets and method of manufacture

Assignee: University of Colorado Boulder
•
Filing: 1994-02-28
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Granted: 1995-08-22
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Expires: 2014-02-28
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Abstract

Abstract A flux-trapped superconducting magnet which is formed of high transition temperature superconducting mixture doped with a magnetic material having a Curie temperature below the transition temperature of the superconducting mixture.

Inventors

  • 👤 Allen M. Hermann
  • 👤 Gol A. Naziripour
  • 👤 Timir Datta

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 04:29
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; H10N60/855; H10N60/857; H10N60/01; H10N60/0268; H10N60/0828; Y; Y10; Y10S; Y10S505/00; Y10S505/725; Y10S505/727; Y10S505/775; Y10S505/776; Y10S505/779; Y10S505/785

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 41 words
A superconducting magnet comprising a mixture of: elements forming a high transition temperature superconductor compound, and a magnetic material having a Curie temperature below the transition temperature cooled below the Curie temperature while a magnetic field is applied to the body.
Claim 2
Dependent Claim 41 words
A superconducting magnet comprising a mixture of: elements forming a high transition temperature superconductor compound, and a magnetic material having a Curie temperature below the transition temperature cooled below the Curie temperature while a magnetic field is applied to the body.
Claim 3
Dependent Claim 21 words
A superconducting magnet as in claim 1 wherein the elements forming the superconducting compound are thaliium, barium, calcium, copper and oxygen.
Claim 4
Dependent Claim 17 words
A superconducting magnet as in claim 1 in which the elements are yttrium, barium, copper and oxygen.
Claim 5
Dependent Claim 17 words
A superconducting magnet as in claim 1 in which the elements are gadolinium, barium, copper and oxygen.
Claim 6
Dependent Claim 17 words
A superconducting magnet as in claim 1 in which the elements are bismuth, strontium, copper and oxygen.
Claim 7
Dependent Claim 18 words
A superconducting magnet as in claim 1 in which the elements are mercury, barium, calcium, copper and oxygen.
Claim 8
Dependent Claim 19 words
A superconducting magnet as in claims 1, 2, 3, 4, 5 or 6 wherein the magnetic material is dysprosium.
Claim 9
Dependent Claim 21 words
A superconducting magnet as in claims 1, 2,. 3, 4, 5 or 6 wherein the magnetic material is TbAl 2 .
Claim 10
Dependent Claim 21 words
A superconducting magnet as in claims 1, 2, 3, 4, 5 or 6 wherein the magnetic material is Nd(Co) 2 .
Claim 11
Dependent Claim 19 words
A superconducting magnet as in claims 1, 2, 3, 4, 5 or 6 wherein the magnetic material is EuO.
Claim 12
Independent Claim 78 words
The method of manufacturing a flux-trapped superconducting magnet comprising: providing a mixture of: elements which form a high-transition temperature superconducting compound, and a magnetic material having a Curie temperature below the transition temperature of the superconducting compound; processing the mixture to form a body of material; applying a magnetic field to the body of material; and cooling the body to a temperature below the Curie temperature of the magnetic material whereby magnetic flux is trapped in said body.
Claim 13
Independent Claim 78 words
The method of manufacturing a flux-trapped superconducting magnet comprising: providing a mixture of: elements which form a high-transition temperature superconducting compound, and a magnetic material having a Curie temperature below the transition temperature of the superconducting compound; processing the mixture to form a body of material; applying a magnetic field to the body of material; and cooling the body to a temperature below the Curie temperature of the magnetic material whereby magnetic flux is trapped in said body.
Claim 14
Dependent Claim 21 words
The method as in claim 11 wherein the elements which form the superconducting compound are thallium, barium, calcium, copper and oxygen.
Claim 15
Dependent Claim 20 words
The method as in claim 11 wherein the elements which form the superconducting compound are yttrium, barium, copper and oxygen.
Claim 16
Dependent Claim 20 words
The method as in claim 11 wherein the elements which form the superconducting compound are gadolinium, barium, copper and oxygen.
Claim 17
Dependent Claim 20 words
The method as in claim 11 wherein the elements which form the superconducting compound are bismuth, strontium, copper and oxygen.
Claim 18
Dependent Claim 21 words
The method as in claim 11 wherein the elements which form the superconducting compound are mercury, barium, calcium, copper and oxygen.
Claim 19
Independent Claim 17 words
The method as in claims 12, 13, 14, 15 or 16 wherein the magnetic material is dysprosium.
Claim 20
Independent Claim 19 words
The method as in claims 12, 13, 14, 15 or 16 wherein the magnetic material is TbAl 2 .
Claim 21
Independent Claim 19 words
The method as in claims 12, 13, 14, 15 or 16 wherein the magnetic material is Nd(CO) 2 .
Claim 22
Independent Claim 17 words
The method as in claims 12, 13, 14, 15 or 16 wherein the magnetic material is EuO.

References Cited (Backward Citations)

US3429032A Cited
US4190817A Cited
US5079225A Cited
US5168096A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-08-21 1999-02-20 1999-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-08-21 2003-02-20 2003-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-08-21 2007-02-20 2007-08-22 $7700.00 Window Closed / Lapsed

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