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:
May. 19, 2015
Filed:
Apr. 24, 2012
Motoaki Hara, Miyagi, JP;
Shogo Inoue, Tokyo, JP;
Jun Tsutsumi, Tokyo, JP;
Masafumi Iwaki, Tokyo, JP;
Motoaki Hara, Miyagi, JP;
Shogo Inoue, Tokyo, JP;
Jun Tsutsumi, Tokyo, JP;
Masafumi Iwaki, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A ladder filter includes at least one series resonator connected in series between an input terminal and an output terminal, at least one parallel resonator connected in parallel with the at least one series resonator, an additional resonator connected in series between the at least one series resonator and one of the input terminal and the output terminal, and an inductor connected in series to the additional resonator, the additional resonator having a resonance frequency higher than an anti-resonance frequency of the at least one series resonator.