Rare earth permanent magnet and rotating electric machine including the same

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United States of America Patent

PATENT NO 12074475
APP PUB NO 20210305852A1
SERIAL NO

17208185

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Abstract

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A rare earth permanent magnet has a first surface and satisfies A11 including a center of gravity of the first surface, B1 is a coercive force of a portion b1, C1 is a coercive force of a portion c1, and D1 is a coercive force of a portion d1, and a heavy rare earth element is present on a top layer of the first surface.

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Patent Owner(s)

Patent OwnerAddress
TDK CORPORATIONTOKYO 103-6128

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayakawa, Takuma Tokyo, JP 17 45

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