Patent US5168259A successfully refreshed from Google Patents.
US5168259A
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US
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Superconducting coil
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1991-12-30
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Granted: 1992-12-01
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Expires: 2011-12-30
Abstract
Abstract A superconducting coil is disclosed. A plurality of coils made of oxide superconducting materials are formed on the respective surfaces of substrates, and the adjacent coils mounted on the substrates are connected by conductors to form one coil. Since the coil consists mainly of oxide superconductor, liquid nitrogen can be used to cool at a temperature less than Tc the coil which is energized in order to generate a magnetic field. Therefore it costs less to generate a magnetic field by the coil than by the conventional coils made of metallic superconductors. In addition, the coil is mechanically strong.
Inventors
- 👤 Yasuhiko Takemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:51
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; Y; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/70; Y10S505/704; Y10S505/705; Y10S505/825; Y10S505/869; Y10S505/87; Y10S505/88
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
76 words
A superconducting coil comprising: a plurality of coils which are formed on respective surfaces of substrates, said coils made of an oxide superconducting material, wherein adjacent coils are electrically connected to each other by metal in order to form one coil from all of said plurality of coils and wherein each of said coils has a critical current density of at least 10,000 A/cm 2 at 77K in the absence of any externally applied magnetic field.
Claim 2
Dependent Claim
76 words
A superconducting coil comprising: a plurality of coils which are formed on respective surfaces of substrates, said coils made of an oxide superconducting material, wherein adjacent coils are electrically connected to each other by metal in order to form one coil from all of said plurality of coils and wherein each of said coils has a critical current density of at least 10,000 A/cm 2 at 77K in the absence of any externally applied magnetic field.
Claim 3
Dependent Claim
14 words
The superconducting coils of claim 1 wherein insulating materials are provided between said substrates.
Claim 4
Dependent Claim
12 words
The superconducting coil of claim 1 wherein said coils are arranged concentrically.
Claim 5
Dependent Claim
26 words
The superconducting coil of claim 1 characterized in that each of said coils can generate a magnetic field substantially in one sense by energizing said coils.
Claim 6
Dependent Claim
21 words
The superconducting coil of claim 1 wherein said coils are formed on the same side surfaces of all of said substrates.
Claim 7
Dependent Claim
48 words
A superconducting coil comprising: a plurality of coils which are formed on opposite surfaces of substrates, said coils made of an oxide superconducting material, wherein adjacent coils are electrically connected to each other by metal in order to form one coil from all of said plurality of coils.
Claim 8
Dependent Claim
48 words
A superconducting coil comprising: a plurality of coils which are formed on opposite surfaces of substrates, said coils made of an oxide superconducting material, wherein adjacent coils are electrically connected to each other by metal in order to form one coil from all of said plurality of coils.
Claim 9
Dependent Claim
53 words
A superconducting coil comprising: a plurality of coils which are formed on opposite surfaces of substrates, said coils made of an oxide superconducting material, wherein each of said substrates has a through hole and adjacent coils are connected to each other by a connector provided in said through hole, said connector being metal.
Claim 10
Dependent Claim
53 words
A superconducting coil comprising: a plurality of coils which are formed on opposite surfaces of substrates, said coils made of an oxide superconducting material, wherein each of said substrates has a through hole and adjacent coils are connected to each other by a connector provided in said through hole, said connector being metal.
Claim 11
Dependent Claim
11 words
The superconducting coil of claim 1 wherein said metal is silver.
Claim 12
Dependent Claim
11 words
The superconducting coil of claim 6 wherein said metal is silver.
Claim 13
Dependent Claim
14 words
The superconducting coil of claim 6 wherein insulating materials are provided between said substrates.
Claim 14
Dependent Claim
12 words
The superconducting coil of claim 6 wherein said coils are arranged concentrically.
Claim 15
Dependent Claim
26 words
The superconducting coil of claim 6 characterized in that each of said coils can generate a magnetic field substantially in one sense by energizing said coils.
Claim 16
Dependent Claim
11 words
The superconducting coil of claim 7 wherein said metal is silver.
Claim 17
Dependent Claim
14 words
The superconducting coil of claim 7 wherein insulating materials are provided between said substrates.
Claim 18
Dependent Claim
12 words
The superconducting coil of claim 7 wherein said coils are arranged concentrically.
Claim 19
Dependent Claim
26 words
The superconducting coil of claim 7 characterized in that each of said coils can generate a magnetic field substantially in one sense by energizing said coils.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |