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:
Jun. 10, 2008
Filed:
Feb. 06, 2007
Masayasu Senda, Okayama, JP;
Shinichi Suenaga, Okayama, JP;
Keisuke Ayabe, Okayama, JP;
Toshiyuki Sakai, Okayama, JP;
Masayasu Senda, Okayama, JP;
Shinichi Suenaga, Okayama, JP;
Keisuke Ayabe, Okayama, JP;
Toshiyuki Sakai, Okayama, JP;
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Nippon Bengara Kogyo Co., Ltd., Okayama, JP;
Abstract
A ferrite magnetic powder for bond magnet that experiences only small decrease in coercivity when molded into a bond magnet is provided, which is a ferrite magnetic powder that includes an alkaline-earth metal constituent and exhibits a decrease in coercivity of not greater than 600 Oe when subjected to a prescribed molding test. The magnetic powder can be obtained by mixing a fine ferrite powder of an average particle diameter of greater than 0.50 to 1.0 μm and a coarse ferrite powder of an average particle diameter of greater than 2.50 to 5.0 μm at ratio to incorporate the fine powder at a content ratio of 15-40 wt %.