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. 14, 2026
Filed:
Jun. 13, 2022
Expandable sintered neodymium-iron-boron magnet, preparation method therefor and application thereof
Yantai Zhenghai Magnetic Material Co., Ltd., Yantai, CN;
Nantong Zhenghai Magnet Co., Ltd., Rugao City, CN;
Zhiqiang Li, Yantai, CN;
Yongjiang Yu, Yantai, CN;
Bin Zhou, Yantai, CN;
Yunting Su, Yantai, CN;
Wen Li, Yantai, CN;
YANTAI ZHENGHAI MAGNETIC MATERIAL CO., LTD., Yantai, CN;
NANTONG ZHENGHAI MAGNET CO., LTD., Rugao City, CN;
Abstract
An expandable sintered neodymium-iron-boron magnet, a preparation method, and an application are provided. The magnet has a sintered neodymium-iron-boron magnet and an expandable coating coated on the surface of the sintered neodymium-iron-boron magnet. The sintered neodymium-iron-boron magnet coated with the expandable coating is used to replace a conventional assembly method of an epoxy resin adhesive coating magnet and potting resin glue, so that the magnet coated with the expandable coating may be inserted into a magnetic steel groove. The irreversible expansion of the coating itself is used to fix the magnet in the magnetic steel groove. Meanwhile, the use of the expandable coating shortens the assembly time of motors and improves the assembly accuracy of the motors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile