Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Reexamination Certificate
2011-05-10
2011-05-10
Sheehan, John P (Department: 1736)
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
C148S104000, C148S302000
Reexamination Certificate
active
07938915
ABSTRACT:
A method for producing a rare-earth alloy based binderless magnet according to the present invention includes the steps of: (A) providing a rapidly solidified rare-earth alloy magnetic powder; and (B) compressing and compacting the rapidly solidified rare-earth alloy magnetic powder by a cold process without using a resin binder, thereby obtaining a compressed compact, 70 vol % to 95 vol % of which is the rapidly solidified rare-earth alloy magnetic powder.
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Official Communication issued in International Patent Application No. PCT/JP2006/315409, mailed on Oct. 24, 2006.
English translation of the official communication issued in counterpart International Application No. PCT/JP2006/315409, mailed on Feb. 21, 2008.
Official Communication issued in corresponding Japanese Patent Application No. 2007-529533, mailed on Nov. 30, 2010.
Bekki Katsunori
Ishikawa Kazuo
Kanekiyo Hirokazu
Miyoshi Toshio
Uemoto Ikuo
Hitachi Metals Ltd.
Keating & Bennett LLP
Nippon Kagaku Yakin Co., Ltd.
Sheehan John P
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