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:
Nov. 05, 2002
Filed:
Sep. 21, 2000
Katsuyuki Uchida, Hikone, JP;
Masami Sugitani, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
An LC filter includes a capacitor with a small residual inductance, and having a good attenuation property up to a high frequency range, so as to achieve a strong attenuation at particular frequencies and also being adapted for use with a large current. Two coils including a metal plate arranged in a spiral shape, are disposed in a serially connected state so as to generate a mutual inductance therebetween. Also, a capacitor electrode plate has a shape which is included in the shape of the coils when viewed from the axial direction thereof, in the vicinity of the connection point of the coils so as to be opposed to a portion of the coils, whereby the portion of the coils functions as a capacitor electrode.