Functionally graded rare earth permanent magnet

United States of America Patent

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Feb 10, 2009
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Sep 28, 2006
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Jan 27, 2006
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Mar 23, 2005

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Abstract

, the oxyfluoride is present in an area fraction of at least 1%. The magnet body includes a surface layer having a higher electric resistance than in the interior. In the permanent magnet, the generation of eddy current within a magnetic circuit is restrained.

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Patent Owner	Address
SHIN-ETSU CHEMICAL CO LTD	TOKYO 100-0004

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

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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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Functionally graded rare earth permanent magnet

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United States of America Patent

11340521

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PATENT NO	7488395
APP PUB NO	20060213585A1
SERIAL NO	11340521
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 10, 2009	US,7488395,B2 US7488395B2	GRANTED PATENT AS SECOND PUBLICATION
September 28, 2006	US,20060213585,A1 US20060213585A1	FIRST PUBLISHED PATENT APPLICATION

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11340521

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