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:
Aug. 11, 2015
Filed:
Mar. 27, 2012
Yuji Kaneko, Nagoya, JP;
Seishi Utsuno, Nagakute, JP;
Yuji Kaneko, Nagoya, JP;
Seishi Utsuno, Nagakute, JP;
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Aichi-Gun, JP;
Abstract
A ferrite powder according to the present invention includes a laminar structure exhibiting a state where W-type ferrite phases are laminated in an easy direction of magnetization, the W-type ferrite phases including a compound expressed by AMFeO, where A, M, Fe, and O represent a first metal element (Sr, Ba, Ca, Pb, etc), a second metal element (Fe, Zn, Cu, Co, Mn, Ni, etc), iron, and oxygen, respectively. This ferrite particle is obtained through: a shape forming step that shapes a mixed powder in a magnetic field to obtain a compact, the mixed powder including for example an M-type ferrite particle including a compound expressed by AFeOand a spinel-type ferrite particle (S-type ferrite particle) including a compound expressed by MFeO; a calcination step that calcines the compact to obtain a calcined substance; and a milling step that mills the calcined substance.