Permanent magnet, and motor and generator using the same

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United States of America Patent

PATENT NO 9773592
SERIAL NO

14661300

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Abstract

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A permanent magnet of an embodiment includes: a composition represented by a composition formula: R(FepMqCurCo1-p-q-r)z, where R is at least one element selected from rare-earth elements, M is at least one element selected from Zr, Ti, and Hf, and relations of 0.3≦p≦0.4, 0.01≦q≦0.05, 0.01≦r≦0.1, and 7≦z≦8.5 (atomic ratio) are satisfied; and a structure including a cell phase having a Th2Zn17 crystal phase, and a cell wall phase existing to surround the cell phase. An average magnetization of the cell wall phase is 0.2 T or less.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBAMINATO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Masaki Tokyo, JP 51 232
Hagiwara, Masaya Kanagawa, JP 68 214
Horiuchi, Yosuke Tokyo, JP 72 272
Kobayashi, Tadahiko Kanagawa, JP 72 1519
Kobayashi, Tsuyoshi Kanagawa, JP 203 2224
Okamoto, Keiko Kanagawa, JP 39 211
Sakurada, Shinya Tokyo, JP 135 827

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