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.

Date of Patent:
May. 08, 2001

Filed:

Jun. 01, 1999
Applicant:
Inventor:

Hirofumi Kobayashi, Fukui-ken, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 5/00 ;
U.S. Cl.
CPC ...
H01F 5/00 ;
Abstract

A common mode inductor has a very small size and high reliability, and is constructed such that it can be inexpensively manufactured, and, when inserted to an electronic circuit, the dc resistance of the coils of the in-phase inductor has little or no effect on the electronic circuit. The common mode inductor has a laminated structure including at least four coils each having coil conductors and insulating sheets. The first and second coils are electrically connected in series so as to define a single coil. Consequently, the dc resistance value of this single coil is less than the dc resistance values of the third and fourth coils. The third and fourth coils are located between the first and second coils, in a stacking direction of the insulating sheets.


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Kobayashi, Hirofumi. (2001). Common mode inductor (U.S. Patent No. 6229425). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6229425

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