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:
Mar. 21, 2006
Filed:
Feb. 26, 2002
Toshiyuki Nakata, Mie, JP;
Tsunetsugu Imanishi, Hyogo, JP;
Hiroyuki Hamamoto, Hyogo, JP;
Hidetoshi Hiwatashi, Osaka, JP;
Tomokazu Kitagawa, Osaka, JP;
Toshiyuki Nakata, Mie, JP;
Tsunetsugu Imanishi, Hyogo, JP;
Hiroyuki Hamamoto, Hyogo, JP;
Hidetoshi Hiwatashi, Osaka, JP;
Tomokazu Kitagawa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A coil component includes a coilhaving a through-hole, a magnetic core encapsulating the coil, and a terminal. The magnetic core includes a top portiondisposed at an upper part of the coil, a bottom portiondisposed at a lower part of the coil, and a middle portion. An outer layer thickness of the middle portion (W) is less than a diameter of the through-hole, while the top portion and the bottom portion are higher in density than the middle portion. The configuration of the present invention provides a small size coil component with less occurrence of magnetic saturation to prevent lowering of inductance even with thin topand bottom portions. The coil component further has improved reliability.