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.

Date of Patent:
Dec. 16, 2008

Filed:

Jan. 28, 2004
Applicants:

Atsushi Sakamoto, Tokyo, JP;

Makoto Nakane, Tokyo, JP;

Hideki Nakamura, Tokyo, JP;

Akira Fukuno, Tokyo, JP;

Inventors:

Atsushi Sakamoto, Tokyo, JP;

Makoto Nakane, Tokyo, JP;

Hideki Nakamura, Tokyo, JP;

Akira Fukuno, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/058 (2006.01); H01F 1/059 (2006.01);
U.S. Cl.
CPC ...
Abstract

A single phase consisting of a ThMnphase can be obtained by having the composition thereof represented by a general formula R(FeCoTi)SiA(in the general formula, R is at least one element selected from rare earth elements (here the rare earth elements signify a concept inclusive of Y), Nd accounts for 50 mol % or more of R, and A is N and/or C) in which the molar ratios in the general formula are such that x=10 to 12.5, y=(8.3−1.7×z) to 12.3, z=0.1 to 2.3, v=0.1 to 3 and w=0 to 30, and the relation (Fe+Co+Ti+Si)/R>12 is satisfied.


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