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:
Feb. 22, 2011
Filed:
Sep. 12, 2006
Applicants:
Yasuharu Miyoshi, Osaka, JP;
Tomoyuki Tada, Osaka, JP;
Inventors:
Yasuharu Miyoshi, Osaka, JP;
Tomoyuki Tada, Osaka, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ferrite material in which BiOis added at 6% by weight or less, and preferably 4% by weight or less, to a ferrite of Li—Zn—(Mn, Fe) containing a specified amount of Mn. In the ferrite material, change of magnetic permeability under high external stress is extremely small, and a core loss under a compression stress is small. By using this ferrite material, an inductor and transformer having small loss even in a state of being molded with resin can be obtained.