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. 07, 2005
Filed:
Mar. 04, 2004
Tetsuhiko Mizoguchi, Yokohama, JP;
Tetsuo Inoue, Yokohama, JP;
Shigeru Yatabe, Komae, JP;
Yasutaka Fukuda, Chiba, JP;
Yoshihito Tachi, Taito, JP;
Tetsuhiko Mizoguchi, Yokohama, JP;
Tetsuo Inoue, Yokohama, JP;
Shigeru Yatabe, Komae, JP;
Yasutaka Fukuda, Chiba, JP;
Yoshihito Tachi, Taito, JP;
Kawatetsu Mining Co., Ltd., Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
This invention provides a surface mounting type planar magnetic device comprised of upper ferrite magnetic film, lower ferrite magnetic film and a planar coil interposed therebetween. For applying surface mount technology, an opening is formed in the upper ferrite magnetic film above a coil terminal portion and then, an external electrode conductive with the coil terminal portion through the opening is formed on the upper ferrite magnetic film. Further, this surface mounting type planar magnetic device is of a thin structure and can be mounted on the surface of a printed board. Its power loss is small, its inductance is large, its frequency characteristic is excellent, the disparity of the characteristic is small and its reliability is excellent.