logo

For the Inventor, By the Inventor

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.:

US 9818513 B1

PDFFull Text
Date of Patent:
Nov. 14, 2017

Filed:

Sep. 30, 2014

Rfeb-based magnet and method for producing rfeb-based magnet

Applicant:

Shinobu Takagi, Aichi, JP;

Inventor:

Shinobu Takagi, Aichi, JP;

Assignee:

DAIDO STEEL CO., LTD., Aichi, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Xiaowei Su

Int. Cl.
CPC ...
H01F 1/01 (2006.01); H01F 7/02 (2006.01); H01F 41/02 (2006.01); B23K 20/02 (2006.01); C22C 38/00 (2006.01); B23K 20/16 (2006.01); B23K 20/233 (2006.01); B23K 101/06 (2006.01); H01F 1/057 (2006.01); B23K 103/00 (2006.01); B23K 103/08 (2006.01);
U.S. Cl.
CPC ...
H01F 1/01 (2013.01); B23K 20/02 (2013.01); B23K 20/026 (2013.01); B23K 20/16 (2013.01); B23K 20/233 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); H01F 7/02 (2013.01); H01F 7/021 (2013.01); H01F 41/0293 (2013.01); B23K 2201/06 (2013.01); B23K 2203/08 (2013.01); B23K 2203/50 (2015.10); C22C 2202/02 (2013.01); H01F 1/0576 (2013.01); H01F 1/0577 (2013.01);
Abstract

Provided is a combined type RFeB-based magnet, including: a first unit magnet; a second unit magnet; and an interface material that bonds the first unit magnet and the second unit magnet, in which the first unit magnet and the second unit magnet are RFeB-based magnets containing a light rare earth element Rthat is at least one element selected from the group consisting of Nd and Pr, Fe, and B, in which the interface material contains at least one compound selected from the group consisting of a carbide, a hydroxide, and an oxide of the light rare earth element R, and in which an amount of a heavy rare earth element Rthat is at least one element selected from the group consisting of Dy, Tb and Ho in the second unit magnet is more than that in the first unit magnet.

Find Patent Forward Citations

Loading…