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. 25, 2001
Filed:
Dec. 31, 1997
Applicant:
Inventors:
Bao-Min Ma, Robbinsville, NJ (US);
Charles O. Bounds, Yardley, PA (US);
Wen Cheng Chang, Chia-Yi, TW;
Qun Chen, Princeton, NJ (US);
Assignee:
Santoku Corporation, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/057 ;
U.S. Cl.
CPC ...
H01F 1/057 ;
Abstract
Magnetic nanocomposite materials including iron, rare earth elements, boron, refractory metal and, optionally, cobalt are disclosed. Neodymium and lanthanum are preferred rare earth elements. The amounts of Nd, La, B and refractory metal are controlled in order to produce both hard and soft magnetic phases, as well as a refractory metal boride precipitated phase. The refractory metal boride precipitates serve as grain refiners and substantially improve the magnetic properties of the nanocomposite materials. The materials are particularly suitable for making bonded magnets.