Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Suguru Nagae0
Hideharu Nobutoki0
Satoru Hayasi0
Date of Patent
February 13, 2007
Patent Application Number
10415273
Date Filed
June 19, 2001
Patent Primary Examiner
Patent abstract
A material for a rare earth permanent magnet having a high magnetic coercive force and a high residual magnetic flux density. 28 to 35% by weight of at least one rare earth element selected from the group consisting of neodymium, praseodymium, dysprosium, terbium, and holmium, 0.9 to 1.3% by weight of boron, 0.25 to 3% by weight of phosphorus, iron, and inevitable impurities. It can further comprise 0.1 to 3.6% by weight of cobalt and 0.02 to 0.25% by weight of copper.
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