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:
Feb. 20, 1990
Filed:
Oct. 28, 1988
Applicant:
Inventors:
Bao-Min Ma, Pittsburgh, PA (US);
Kalathur S Narasimhan, Monroeville, PA (US);
Assignee:
Crucible Materials Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148302 ; 420 83 ; 420121 ;
Abstract
A permanent magnet alloy consisting essentially of R.sub.2 Fe.sub.14 B, wherein, R is a combination of rare earth elements consisting essentially of, in atomic percent, neodymium 3 to 11 and balance holmium. The alloy may include optional additions of the rare earth elements gadolinium up to 10%, terbium up to 15%, dysprosium up to 16%, erbium up to 18% and thulium up to 12%.