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:
May. 09, 1989
Filed:
Nov. 20, 1986
Applicant:
Inventors:
Daniel W Stahura, Anderson, IN (US);
Robert R Lown, Tyngsboro, MA (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335306 ; 148301 ; 148302 ; 420 83 ; 420121 ;
Abstract
A ring magnet for creating a desired magnetic field within the bore of the ring is formed from a plurality of magnetized, magnetically isotropic magnets comprised of RE.sub.2 TM.sub.14 B.sub.1 alloy. The invention has particular application to ring magnets for magnetic resonance imaging devices.