Invention Grant
- Patent Title: High resistance magnet and motor using the same
- Patent Title (中): 高阻磁体和电机使用相同
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Application No.: US12708580Application Date: 2010-02-19
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Publication No.: US07972450B2Publication Date: 2011-07-05
- Inventor: Matahiro Komuro , Yuichi Satsu , Takao Imagawa
- Applicant: Matahiro Komuro , Yuichi Satsu , Takao Imagawa
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2006-232989 20060830
- Main IPC: H01F1/00
- IPC: H01F1/00 ; H02K1/27 ; H02K1/06 ; H02K5/10 ; H02K21/12 ; H02K3/48 ; H02K1/12
Abstract:
A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %.
Public/Granted literature
- US20100141367A1 HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME Public/Granted day:2010-06-10
Information query
