Invention Grant
- Patent Title: Ferrite sintered magnet and rotating electric machine comprising the same
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Application No.: US16823871Application Date: 2020-03-19
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Publication No.: US11610705B2Publication Date: 2023-03-21
- Inventor: Yoshitaka Murakawa , Shogo Muroya , Hiroyuki Morita , Masanori Ikeda
- Applicant: TDK Corporation
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: JPJP2019-059935 20190327
- Main IPC: H01F1/11
- IPC: H01F1/11 ; H02K1/02 ; C04B35/26 ; H01F1/10
Abstract:
A ferrite sintered magnet comprising an M type Sr ferrite having a hexagonal structure as a main phase, wherein the ferrite sintered magnet does not substantially comprise a rare earth element and Co, a content of B is 0.005 to 0.9% by mass in terms of B2O3, and a content of Zn is 0.01 to 1.2% by mass in terms of ZnO.
Public/Granted literature
- US20200312493A1 FERRITE SINTERED MAGNET AND ROTATING ELECTRIC MACHINE COMPRISING THE SAME Public/Granted day:2020-10-01
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