发明授权
- 专利标题: Motor using magnet
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申请号: US10390701申请日: 2003-03-19
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公开(公告)号: US07064642B2公开(公告)日: 2006-06-20
- 发明人: Matahiro Komuro , Katsuhiro Komuro
- 申请人: Matahiro Komuro , Katsuhiro Komuro
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Crowell & Moring LLP
- 优先权: JP2002-241295 20020822
- 主分类号: H01F7/02
- IPC分类号: H01F7/02
摘要:
A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.
公开/授权文献
- US20040036566A1 Motor using magnet 公开/授权日:2004-02-26
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