Patent US5029903A successfully refreshed from Google Patents.
Patent US5061685A successfully refreshed from Google Patents.
US5061685A
Expired / Lapsed
US
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Magnetic shield
Assignee: Kitagawa Industries Co Ltd
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Filing: 1991-01-14
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Granted: 1991-10-29
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Expires: 2011-01-14
Abstract
Abstract A magnetic shield which comprises: a plurality of metallic cylinders connected to each other in the axial direction thereof, each of the plurality of cylinders having at one end thereof an engaging section for receiving an end of an adjacent metallic cylinder to be connected thereto; and a film of a composite oxide superconducting material containing a Cu x O y -radical, formed on the entire inner surface of each of the plurality of cylinders, including the inner surface of the engaging section thereof. The above-mentioned magnetic shield can easily be scaled up and has a high magnetic shielding effect.
Inventors
- 👤 Shigeyoshi Kosuge
- 👤 Makoto Kabasawa
- 👤 Moriaki Ono
- 👤 Yukio Shinbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:10
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0075; H05K9/0077; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/872
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A magnetic shield characterized by comprising: a plurality of metallic cylinders connected to each other in the axial direction thereof, each of said plurality of cylinders having at one end thereof an engaging section for receiving an end of an adjacent metallic cylinder to be connected thereto; and a film of a composite oxide superconducting material containing a Cu x O y -radical, formed on the entire inner surface of each of said plurality of cylinders, including the inner surface of said engaging section thereof.
Claim 2
Dependent Claim
85 words
A magnetic shield characterized by comprising: a plurality of metallic cylinders connected to each other in the axial direction thereof, each of said plurality of cylinders having at one end thereof an engaging section for receiving an end of an adjacent metallic cylinder to be connected thereto; and a film of a composite oxide superconducting material containing a Cu x O y -radical, formed on the entire inner surface of each of said plurality of cylinders, including the inner surface of said engaging section thereof.
Claim 3
Dependent Claim
24 words
A magnetic shield as claimed in claim 1, wherein: each of said plurality of metallic cylinders is made of nickel or a nickel alloy.
Claim 4
Dependent Claim
40 words
A magnetic shield as claimed in claim 1, wherein: each of said plurality of metallic cylinders comprises a cylindrical copper substrate and a film of nickel or a nickel alloy formed on the entire inner surface of said cylindrical substrate.
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) | 1994-10-28 | 1995-04-29 | 1995-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-28 | 1999-04-29 | 1999-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-28 | 2003-04-29 | 2003-10-29 | $7700.00 | Window Closed / Lapsed |