US5075284A
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US
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Method of manufacturing superconducting ceramics and the products thereof
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1988-08-19
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Granted: 1991-12-24
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Expires: 2008-08-19
Abstract
Abstract A high Tc superconducting ceramics material is produced by mixing ceramic constituents with an alcohol or a freon before firing. The alcohol or freon functions to reduce the ceramics during firing so that excess oxygen can be eliminated from the superconducting structure. The superconducing ceramics then are coated with an organic resin film in order to avoid the influence of air.
Inventors
- 👤 Shunpei Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; C04B35/622; C04B35/64; C04B41/45; C04B41/46; C04B41/48; C04B41/80; C04B41/81; C04B41/82; C04B41/83; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0661; H10N60/0716; H10N60/80; H10N60/85; H10N60/855; H10N60/857; 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; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T428/31721
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formula of (A 1-x B x ) y Cu z O w , where A is one or more elements selected from among Group IIIa of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, and O<x<1; y=2.0-4.0; z=1.0-4.0; and w=4.0-10.0; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 2
Dependent Claim
85 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formula of (A 1-x B x ) y Cu z O w , where A is one or more elements selected from among Group IIIa of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, and O<x<1; y=2.0-4.0; z=1.0-4.0; and w=4.0-10.0; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 3
Dependent Claim
26 words
The ceramic superconductor of claim 1 wherein said superconducting ceramic material is YBa 2 Cu 3 O 7-x or YCa 2 Cu 3 O 7-x .
Claim 4
Dependent Claim
24 words
The ceramic superconductor of claim 1 wherein said organic resin is selected from the group consisting of epoxy resin, fluorine resin, and polyimide resin.
Claim 5
Dependent Claim
103 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formula of (A 1-x B x ) y Cu z O w X v , where A is one or more elements of Group IIIa of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, X is one or more elements of a group consisting of Ge, Sn, Pb, F, or Cl, and O<x<1; y=2.0-4.0; z=1.0-4.0; w=4.0-10.0; and v=0-3; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 6
Dependent Claim
103 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formula of (A 1-x B x ) y Cu z O w X v , where A is one or more elements of Group IIIa of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, X is one or more elements of a group consisting of Ge, Sn, Pb, F, or Cl, and O<x<1; y=2.0-4.0; z=1.0-4.0; w=4.0-10.0; and v=0-3; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 7
Dependent Claim
24 words
The ceramic superconductor of claim 4 wherein said organic resin is selected from the group consisting of epoxy resin, fluorine resin, and polyimide resin.
Claim 8
Dependent Claim
83 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formulae of (A 1-x B x ) y Cu z O w , where A is one or more elements of Group Vb of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, and 0.3≦x<1; y=2.0-4.0-; z=1.0-4.0; and w=4.0-10.0; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 9
Dependent Claim
83 words
A ceramic superconductor comprising: a compacted superconducting ceramic material conforming to the stoichiometric formulae of (A 1-x B x ) y Cu z O w , where A is one or more elements of Group Vb of the Periodic Table, B is one or more elements of Group IIa of the Periodic Table, and 0.3≦x<1; y=2.0-4.0-; z=1.0-4.0; and w=4.0-10.0; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 10
Dependent Claim
17 words
The ceramic superconductor of claim 6 wherein said superconducting ceramic material is BiCaSrCu 3 O 6-8 .
Claim 11
Dependent Claim
24 words
The ceramic superconductor of claim 7 wherein said organic resin is selected from the group consisting of epoxy resin, fluorine resin, and polyimide resin.
Claim 12
Dependent Claim
33 words
A ceramic superconductor comprising: a compacted superconducting ceramic material; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 13
Dependent Claim
33 words
A ceramic superconductor comprising: a compacted superconducting ceramic material; and a coating covering the exposed surface of said superconducting ceramic material, said coating selected from the group consisting of DLC or organic resin.
Claim 14
Dependent Claim
13 words
The ceramic superconductor of claim 9 wherein the superconducting ceramic material comprises copper.
Claim 15
Dependent Claim
24 words
The ceramic superconductor of claim 9 wherein said organic resin is selected from the group consisting of epoxy resin, fluorine resin, and polyimide resin.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |