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:
Apr. 07, 2026
Filed:
Mar. 25, 2022
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/057 (2006.01); C22C 38/00 (2006.01); H01F 1/00 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0577 (2013.01); C22C 38/005 (2013.01); H01F 41/0293 (2013.01); C22C 2202/02 (2013.01); H01F 1/00 (2013.01);
Abstract
To provide an alloy for an R-T-B based permanent magnet from which an R-T-B based permanent magnet having improved magnetic properties can be manufactured. The alloy for an R-T-B based permanent magnet contains R, T, and B, in which R is a rare earth element, T is a transition metal element, and B is boron. An area ratio of a non-columnar crystal structure in a cross section is 1.0% or more and 30.0% or less.