The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 1996
Filed:
Feb. 02, 1989
Applicant:
Inventors:
Haruo Ono, Kanagawa, JP;
Michiru Fujita, Kanagawa, JP;
Assignee:
Fuji Electric Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335301 ; 335216 ; 324318 ;
Abstract
A superconducting magnet for producing a uniform magnetic field, including a main coil comprising first superconducting coils, and active shield comprising second superconducting coils and arranged in such a manner as to coaxially surround the main coil, and a self-shield comprising magnetic material and arranged in such a manner as to coaxially surround the active shield. The magnetic moment of the active shield is smaller in absolute value than and opposite in direction to the magnetic moment of the main coil.