US5389908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil of superconducting material for electric appliance and motor utilizing said coil
Assignee: Canon Inc
•
Filing: 1993-10-20
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Granted: 1995-02-14
•
Expires: 2013-10-20
Abstract
Abstract Coils for electric appliances such as motor or generator are made with a superconducting material, and the width of the coil and the gap between the coils are so adjusted that the passage of magnetic flux generated by a magnetic flux generating member in the electric appliance is not influenced by the magnetic repulsion of the superconducting material.
Inventors
- 👤 Takeshi Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:29
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; H02; H02K; H02K3/00; H02K3/04; H02K3/26; H02K55/00; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/70; Y10S505/706
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A coil of a superconducting material for use in electrical equipment, which comprises a coil formed in a flat spiral shape on an insulator substrate, wherein the gap between conductors of said coil is greater than a dimension of the conductor measured along the same direction as the gap is measured.
Claim 2
Dependent Claim
51 words
A coil of a superconducting material for use in electrical equipment, which comprises a coil formed in a flat spiral shape on an insulator substrate, wherein the gap between conductors of said coil is greater than a dimension of the conductor measured along the same direction as the gap is measured.
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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) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |