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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 12462958 B1

PDFFull Text
Date of Patent:
Nov. 04, 2025

Filed:

Dec. 27, 2022

Method of producing phosphate-coated smfen-based anisotropic magnetic powder and phosphate-coated smfen-based anisotropic magnetic powder

Applicant:

Nichia Corporation, Anan, JP;

Inventors:

Masahiro Abe, Tokushima, JP;

Satoshi Yamanaka, Tokushima, JP;

Shuichi Tada, Komatsushima, JP;

Kenta Iwai, Anan, JP;

Assignee:

NICHIA CORPORATION, Anan, JP;

Attorney:

Hunton Andrews Kurth LLP

Primary Examiner:

Humera N Sheikh

Int. Cl.
CPC ...
H01F 1/059 (2006.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); B22F 1/16 (2022.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/059 (2013.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); B22F 1/16 (2022.01); H01F 41/026 (2013.01); B22F 2201/03 (2013.01); B22F 2301/45 (2013.01); B22F 2302/45 (2013.01); B22F 2998/10 (2013.01);
Abstract

A method of producing a phosphate-coated SmFeN-based anisotropic magnetic powder, the method including performing a phosphate treatment including adding an inorganic acid to a slurry containing a raw material SmFeN-based anisotropic magnetic powder, water, a phosphate compound, and a rare earth compound so that the slurry is adjusted to have a pH of at least 1 and not higher than 4.5 to obtain a phosphate-coated SmFeN-based anisotropic magnetic powder having a surface coated with a phosphate.

Find Patent Forward Citations

Abe, Masahiro. (2025). Method of producing phosphate-coated smfen-based anisotropic magnetic powder and phosphate-coated smfen-based anisotropic magnetic powder (U.S. Patent No. 12462958). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12462958

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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