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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 12592329 B1

PDFFull Text
Date of Patent:
Mar. 31, 2026

Filed:

Apr. 20, 2021

R-t-b-based permanent magnet material, preparation method therefor and use thereof

Applicant:

Fujian Golden Dragon Rare-earth Co., Ltd., Fujian, CN;

Inventors:

Qin Lan, Fujian, CN;

Jiaying Huang, Fujian, CN;

Assignee:

FUJIAN GOLDEN DRAGON RARE-EARTH Co., Ltd., Fujian, CN;

Attorneys:

Houston Beshining Law Office PLLC

Liangang Ye

Primary Examiner:

Jie Yang

Int. Cl.
CPC ...
H01F 1/057 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0577 (2013.01); C22C 33/0278 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 2202/02 (2013.01);
Abstract

Disclosed are an R-T-B-based permanent magnet material, a preparation method therefor and the use thereof. The R-T-B-based permanent magnet material comprises R, B, M, Fe, Co, X and inevitable impurities, wherein: (1) R is a rare earth element, and the R includes at least Nd and RH, M being one or more of Ti, Zr and Nb, and X including Cu, 'Al and/or Ga'; and (2) in percentage by weight, R: 30.5-32.0 wt %, B: 0.95-0.99 wt %, M: 0.3-0.6 wt %, X: 0.8-1.8 wt %, and Cu: 0.35-0.50 wt %, and the balance is Fe, Co and inevitable impurities. According to the present invention, under the condition of 0.3-0.6 wt % of a high melting point metal, a permanent magnet material with an excellent magnet performance and a good squareness is obtained.

Find Patent Forward Citations

Lan, Qin. (2026). R-t-b-based permanent magnet material, preparation method therefor and use thereof (U.S. Patent No. 12592329). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12592329

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