Patent US3731374A successfully refreshed from Google Patents.
US3731374A
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US
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Method of fabricating a hard intermetallic superconductor by means of diffusion
Assignee: United States Atomic Energy Commission
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Filing: 1971-07-20
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Granted: 1973-05-08
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Expires: 1991-07-20
Abstract
Abstract Method of providing fine superconductors in a metal matrix wherein solid-state diffusion of a selected component from the matrix takes place and is ''''enhanced'''' by an externally added component to provide a desired superconductor alloy in the matrix.
Inventors
- 👤 M Suenaga
- 👤 W Sampson
- 👤 D Gurinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:34
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S428/9335; Y10S428/941; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/818; Y10S505/821; 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; Y10T428/12681; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
40 words
The method of claim 1 in which said vanadium filaments are formed by assembling a Cu-Ga (18 % Ga) alloy cylinder around high purity vanadium rods, and then the assembly is drawn to reduce the outside diameter of said rods.
Claim 2
Dependent Claim
17 words
The method of claim 1 in which said diffusion is performed in an atmosphere containing Ga vapor.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which said diffusion is produced bY heating to at least 600* C.
Claim 4
Dependent Claim
33 words
The method of claim 1 in which said diffusion is produced by heating said Ga sheathed Cu-Ga matrix and vanadium filaments therein at 650* for 100 hours in an atmosphere containing Ga vapor.
Claim 5
Dependent Claim
23 words
The method of claim 1 in which said Ga sheath around said Cu-Ga matrix is formed by dipping said matrix in molten Ga.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |