Patent EP0068418A2 successfully refreshed from Google Patents.
US4190701A
Expired / Lapsed
US
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V3 Ga Composite superconductor
Assignee: United States Department of the Navy
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Filing: 1979-04-06
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Granted: 1980-02-26
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Expires: 1999-04-06
Abstract
Abstract A composite superconductor which comprises: (1) A matrix sheath of a copper-base alloy containing from about 12 to about 20 at. % of gallium and from about 0.2 to about 6 at. % of aluminum; (2) a core in said matrix sheath, said core being of a vanadium-base alloy containing from about 1.0 to about 9.5 at. % of gallium and from about 0.1 to about 2.5 at. % of titanium; and (3) a continuous interfacial layer of V3Ga between said matrix sheath and said core.
Inventors
- 👤 David G. Howe
- 👤 Donald U. Gubser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; Y; Y10; Y10S; Y10S420/00; Y10S420/901; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/805; Y10S505/812; Y10S505/813; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/921; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A composite supreconductor which comprises; a core of an alloy consisting of a vanadium-base ternary alloy having from about 1 to 9.5 atomic percent of gallium, and from about 0.1 to about 2.5 atomic percent of titanium, the remainder being vanadium; a matrix of an alloy consisting of about 12 to about 20 atomic percent of gallium and about 0.2 to about 6 atomic percent of aluminum, the remainder being copper; and an interfacial layer of V 3 Ga.
Claim 2
Dependent Claim
79 words
A composite supreconductor which comprises; a core of an alloy consisting of a vanadium-base ternary alloy having from about 1 to 9.5 atomic percent of gallium, and from about 0.1 to about 2.5 atomic percent of titanium, the remainder being vanadium; a matrix of an alloy consisting of about 12 to about 20 atomic percent of gallium and about 0.2 to about 6 atomic percent of aluminum, the remainder being copper; and an interfacial layer of V 3 Ga.
Claim 3
Dependent Claim
62 words
The composite superconductor of claim 1 wherein said alloy of said core consists of 6 to 8.6 atomic percent of gallium and 0.2 to 1.0 atomic percent of titanium, the remainder being vanadium, and said alloy of said matrix sheath consists of 14 to 18 atomic percent of gallium and from 0.5 to 4 atomic percent of aluminum, the remainder being copper.
Claim 4
Dependent Claim
54 words
The composite superconductor of claim 1 wherein said alloy of said core consists of 7.0 to 8.3 atomic percent of gallium and from 0.2 to 0.6 atomic percent of titanium, the remainder being vanadium; and said alloy of said matrix sheath consists of 0.5 to 2 atomic percent of aluminum, the remainder being copper.
Claim 5
Dependent Claim
16 words
The superconductor of claim 2 wherein said core comprises multiple units embedded individually in said matrix.
Claim 6
Dependent Claim
16 words
The superconductor of claim 4 wherein said multiple units are filaments and said superconductor is wire-shaped.
Claim 7
Dependent Claim
16 words
The superconductor of claim 3 wherein said core comprises multiple units embedded individually in said matrix.
Claim 8
Dependent Claim
16 words
The superconductor of claim 6 wherein said multiple units are filaments and said superconductor is wire-shaped.
Claim 9
Dependent Claim
10 words
The superconductor of claim 6 wherein said superconductor is tape-shaped.
Claim 10
Dependent Claim
15 words
The superconductor of claim 2 wherein said interfacial layer is from 0.1-15.0 microns in thickness.
Claim 11
Dependent Claim
17 words
The superconductor of claim 3 wherein said interfacial layer is from 0.1 to 15.0 microns in thickness.
Claim 12
Dependent Claim
17 words
The superconductor of claim 7 wherein said interfacial layer is from 0.1 to 4.0 microns in thickness.
Claim 13
Dependent Claim
17 words
The superconductor of claim 11 wherein said interfacial layer is from 0.1 to 2.5 microns in thickness.
Claim 14
Dependent Claim
20 words
The superconductor of claim 11 wherein said interfacial layer was grown at a temperature from about 480° to 600° C.
Claim 15
Dependent Claim
19 words
The superconductor of claim 12 wherein said interfacial layer was grown at a temperature from 480° to 600° C.
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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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |