Patent AT172223B successfully refreshed from Google Patents.
Patent US4980964A successfully refreshed from Google Patents.
US4980964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconducting wire
Assignee: Individual
•
Filing: 1988-08-19
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Granted: 1991-01-01
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Expires: 2008-08-19
Abstract
Abstract A wire of ceramic superconductive material is produced by filling a metal tube with a powder of superconductive material, sealing the tube ends and drawing the filled, sealed tube through dies of progressively smaller size until a predetermined wire size is achieved and then heat treating the drawn wire to assure necessary crystallinity in the superconductor material.
Inventors
- 👤 Jan Boeke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:50
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; H10N60/203; H10N60/01; H10N60/0268; H10N60/0801; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887; Y10S505/917; Y10S505/918; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
A method for producing a protected wire of crystalline superconducting material which comprises: (a) providing a metal tube with a lining of protective material which is substantially inert to both the metal tube and the superconductive material with which the tube is to be filled, (b) sealing the tube at one end with an electrically conductive metal, filling the tube with a superconductive material, and sealing the other end of the tube with an electrically conductive metal, (c) drawing at least a portion of the filled tube through at least one size-reducing die whereby the diameter of the tube and its contents is reduced to a wire size, and (d) heat treating the drawn wire to provide crystallinity in the superconductive material.
Claim 2
Independent Claim
122 words
A method for producing a protected wire of crystalline superconducting material which comprises: (a) providing a metal tube with a lining of protective material which is substantially inert to both the metal tube and the superconductive material with which the tube is to be filled, (b) sealing the tube at one end with an electrically conductive metal, filling the tube with a superconductive material, and sealing the other end of the tube with an electrically conductive metal, (c) drawing at least a portion of the filled tube through at least one size-reducing die whereby the diameter of the tube and its contents is reduced to a wire size, and (d) heat treating the drawn wire to provide crystallinity in the superconductive material.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein the hollow metal tube is lined with a glass powder before being filled with the superconductor material.
Claim 4
Dependent Claim
33 words
A method according to claim 2 wherein the heat treatment (d) fuses the glass powder particles into a unitary mass and after the heat treatment, removing the metal tube from the drawn wire.
Claim 5
Dependent Claim
20 words
A method according to claim 1 wherein after the heat treatment (d), removing the metal tube from the drawn wire.
Claim 6
Dependent Claim
15 words
A method according to claim 4 wherein the metal tube removal is by chemical etching.
Claim 7
Dependent Claim
25 words
A method according to claim 4 wherein after removal of the metal tube, the superconductor wire with coating support material which is a synthetic resin.
Claim 8
Dependent Claim
19 words
A method according to claim 1 wherein the cross-section of the drawn wire is square, rectangular, round or hexagonal.
Claim 9
Dependent Claim
22 words
A method according to claim 1 wherein the metal tube is iron and the lining of protective material is a noble metal.
Claim 10
Independent Claim
70 words
A method for the continuous production of a superconductor wire which comprises: (a) forming a trip of metal into a u-shaped gutter, (b) filling said gutter with a powder of a superconductor material, (c) sealing said gutter into a tube to surround and encase the superconductor material, (d) drawing the sealed gutter through at least one size reducing die to form a wire, and (e) heat treating the formed wire.
Claim 11
Independent Claim
70 words
A method for the continuous production of a superconductor wire which comprises: (a) forming a trip of metal into a u-shaped gutter, (b) filling said gutter with a powder of a superconductor material, (c) sealing said gutter into a tube to surround and encase the superconductor material, (d) drawing the sealed gutter through at least one size reducing die to form a wire, and (e) heat treating the formed wire.
Claim 12
Dependent Claim
33 words
A method according to claim 9 wherein the hollow metal tube has an interior surface coating of a protective material which is substantially inert to both the metal tube and the superconductive material.
Claim 13
Dependent Claim
19 words
A method according to claim 9 wherein the cross-section of the drawn wire is square, rectangular, round or hexagonal.
Claim 14
Dependent Claim
20 words
A method according to claim 9 wherein after the heat treatment (e), removing the metal tube from the drawn wire.
Claim 15
Dependent Claim
15 words
A method according to claim 12 wherein the metal tube removal is by chemical etching.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |