The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Jun. 16, 2010
Toru Maeda, Itami, JP;
Naoto Igarashi, Itami, JP;
Haruhisa Toyoda, Itami, JP;
Hirokazu Kugai, Osaka, JP;
Kazuyuki Hayashi, Otake, JP;
Hiroko Morii, Otake, JP;
Seiji Ishitani, Otake, JP;
Toru Maeda, Itami, JP;
Naoto Igarashi, Itami, JP;
Haruhisa Toyoda, Itami, JP;
Hirokazu Kugai, Osaka, JP;
Kazuyuki Hayashi, Otake, JP;
Hiroko Morii, Otake, JP;
Seiji Ishitani, Otake, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Toda Kogyo Corp., Hiroshima, JP;
Abstract
A soft magnetic material is a soft magnetic material including a composite magnetic particle () having a metal magnetic particle () mainly composed of Fe and an insulating coating () covering metal magnetic particle (), and insulating coating () contains an iron phosphate compound and an aluminum phosphate compound. The atomic ratio of Fe contained in a contact surface of insulating coating () in contact with metal magnetic particle () is larger than the atomic ratio of Fe contained in the surface of insulating coating (). The atomic ratio of Al contained in the contact surface of insulating coating () in contact with metal magnetic particle () is smaller than the atomic ratio of Al contained in the surface of insulating coating (). Thus, iron loss can be reduced.