Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-01-20
2009-06-09
Le, H. (Holly) T (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S212000, C428S219000, C428S220000, C428S407000
Reexamination Certificate
active
07544417
ABSTRACT:
A soft magnetic material includes a plurality of composite magnetic particles (30), wherein each of the plurality of composite magnetic particles (30) includes a metal magnetic particle (10), an insulating coating (20) covering the surface of the metal magnetic particle (10), and a composite coating (22) covering the outside of the insulating coating (20). The composite coating (22) includes a heat-resistance-imparting protective coating (24) covering the surface of the insulating coating (20), and a flexible protective coating (26) covering the surface of the heat-resistance-imparting protective coating (24). Accordingly, a soft magnetic material and a dust core which have a satisfactory compactibility and in which the insulating coating satisfactorily functions, thereby sufficiently reducing core loss, can be obtained.
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Hirose Kazuhiro
Maeda Toru
Toyoda Haruhisa
Le H. (Holly) T
Osha • Liang LLP
Sumitomo Electric Industries Ltd.
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