US3807041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a composite superconductor
Assignee: Imperial Metal Industries Kynoch Ltd
•
Filing: 1972-11-21
•
Granted: 1974-04-30
•
Expires: 1992-11-21
Abstract
Abstract A method of coating a superconductor precursor prior to reaction of the components of the superconductor which comprises coating the precursor with a material having a low self-diffusion coefficient prior to the reaction.
Inventors
- 👤 Dougall I Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:41
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; C; C22; C22C; C22C1/00; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/92; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
20 words
A method as claimed in claim 1 in which the coating material is removed from the precursor after the reaction.
Claim 2
Dependent Claim
14 words
A method as claimed in claim 1 in which the coating material is carbon.
Claim 3
Dependent Claim
49 words
A method as claimed in claim 3 in which the carbon is coated on to the precursor by coating the precursor with a compound decomposable in an inert atmosphere to form carbon, and heating the precursor to decompose the compound and form the carbon in situ on the precursor.
Claim 4
Dependent Claim
14 words
A method as claimed in claim 4 in which the compound is polyvinyl acetate.
Claim 5
Dependent Claim
13 words
A method as claimed in claim 4 in which the compound is lanolin.
Claim 6
Dependent Claim
22 words
A method as claimed in claim 6 in which the lanolin coated precursor is subsequently coated with a finely powdered refractory compound.
Claim 7
Dependent Claim
17 words
A method as claimed in claim 7 in which the finely powdered refractory compound is alumino silicate.
Claim 8
Dependent Claim
15 words
A method as claimed in claim 1 in which the coating material is magnesium oxide.
Claim 9
Dependent Claim
41 words
A method as claimed in claim 9 in which the magnesium oxide is coated on to the precursor by coating the precursor with magnesium hydroxide and heating the precursor to evolve water and form magnesium oxide in situ on the precursor.
Claim 10
Dependent Claim
28 words
A method as claimed in claim 10 in which the magnesium hydroxide is coated on to the precursor by dipping the precursor into a suspension of magnesium hydroxide.
Claim 11
Dependent Claim
24 words
A method as claimed in claim 2 in which the coating material is removed by brushing or by passing the precursor between felt pads.
Claim 12
Dependent Claim
33 words
A method as claimed in claim 1 in which the former is a coil former, the coating material being an insulant and the reacted coil being impregnated with a support medium after reaction.
Claim 13
Dependent Claim
36 words
A method as claimed in claim 13 in which the coating material is a mixture of lanolin and alumino silicate, the lanolin decomposing to form a carbon layer which is removed by oxidation prior to impregnation.
Claim 14
Dependent Claim
23 words
A method as claimed in claim 1 in which the superconductive intermetallic compound is Nb3Sn and the support material is copper or silver.
Claim 15
Dependent Claim
22 words
A method as claimed in claim 1 in which the superconductive compound is V3Ga, and the support material is copper or silver.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |