Patent ID: 11948730
Assignee: SEIKO EPSON CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  C | IPC B  H

Claim 0:
1. An insulator-coated magnetic alloy powder particle, comprising:
a magnetic alloy powder particle; and
an insulator that coats a surface of the magnetic alloy powder particle and that has a plurality of protrusions at a surface thereof, wherein
the insulator includes:
a first insulator in a film form that coats the coats the surface of the magnetic alloy powder particle,
a second insulator in a particulate form, wherein
the first insulator is between the magnetic alloy powder particle and the second insulator, and
the second insulator is enclosed in each of the plurality of protrusions, and

a third insulator in a film form that coats at least a part of a surface of the second insulator and specific regions of the first insulator, wherein
the second insulator is between the first insulator and the third insulator,
the specific regions of the first insulator correspond to regions that are not in contact with the second insulator,
the third insulator protrudes in a region that coats the second insulator,
the protrusion of the third insulator corresponds to the plurality of protrusions, and
a number of protrusions of the plurality of protrusions corresponds to a number of particles of the second insulator at the surface of the magnetic alloy powder particle.