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:
Jul. 17, 2001
Filed:
Sep. 24, 1999
Applicant:
Inventor:
Viswanathan Panchanathan, Anderson, IN (US);
Assignee:
Magnequench International, Inc., Anderson, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/057 ;
U.S. Cl.
CPC ...
H01F 1/057 ;
Abstract
Permanent rare-earth magnets containing Ce are fabricated with coercivity greater than 4 kOe. One composition for such magnets is [Ce,R,],(F,B,),, where R is one or more rare-earth elements, F is Fe or Fe—Co, and the relative elemental atomic composition is 0.0<y≦0.3, 0.04≦z≦0.25, and 0.01≦v≦0.30. Another composition is [(Ce,La,),R,],(F,B,),, with the relative elemental atomic composition x<0.4 or 0.9<x≦1.0 and 0.2≦y≦0.8, 0.04≦z≦0.25, and 0.01≦v≦0.30.