Rare earth permanent magnet

United States of America Patent

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Feb 10, 2009
Grant Date
Sep 28, 2006
app pub date
Jan 27, 2006
filing date
Mar 23, 2005

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Abstract

A tetragonal system form a three-dimensional network structure which is continuous from the magnet body surface to a depth of at least 10 μm. The invention provides R—Fe—B sintered magnets which exhibit a high coercive force.

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Patent Owner(s)

Patent Owner	Address
SHIN-ETSU CHEMICAL CO LTD	6-1 OHTEMACHI 2-CHOME CHIYODA-KU TOKYO 1000004

International Classification(s)

H01F:MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF M....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hirota, Koichi	Echizen, JP	103	1054
Minowa, Takehisa	Echizen, JP	140	1510
Nakamura, Hajime	Echizen , JP	164	2612
Shimao, Masanobu	Echizen, JP	14	147

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Rare earth permanent magnet

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United States of America Patent

11340502

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PATENT NO	7488394
APP PUB NO	20060213584A1
SERIAL NO	11340502
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 10, 2009	US,7488394,B2 US7488394B2	GRANTED PATENT AS SECOND PUBLICATION
September 28, 2006	US,20060213584,A1 US20060213584A1	FIRST PUBLISHED PATENT APPLICATION

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11340502

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