Ferrite particles for bonded magnet, resin composition for bonded magnet and molded products using the same
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United States of America Patent
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Mar 28, 2017
Grant Date -
Aug 14, 2014
app pub date -
Apr 18, 2014
filing date -
Mar 30, 2007
priority date (Note) -
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Abstract
The present invention relates to ferrite particles for bonded magnet, having a volume-average particle diameter of 2.1 to 2.7 μm and a particle diameter ×90 of 4.3 to 5.4 μm wherein the ×90 represents a particle diameter at which a cumulative percentage of particles under sieve (undersize particles) based on a volume thereof is 90%, when determined from a particle size distribution thereof measured by using a laser diffraction type particle size distribution measuring apparatus.
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