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:
Sep. 20, 2005
Filed:
May. 13, 2003
Kenji Inoue, Tokyo, JP;
Masahiro Nakano, Tokyo, JP;
Katsuo Sato, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An SAW elementcomprises a first wiring sectionformed between an input terminaland an output terminal, a plurality of first SAW resonatorswhich are located in serial to the first wiring section, a plurality of second SAW resonatorswhich are located in serial to the first wiring sectionat the side of the input terminalor at the side of the output terminalwith respect to the first SAW resonators, a plurality of second wiring sectionwhich are formed between an intermediate point of the second SAW resonatorseach other in the first wiring sectionand a reference voltage electrode, and a plurality of third SAW resonatorswhich are located in the second wiring section, respectively, and which have anti-resonant frequencies corresponding with resonant frequencies of the second SAW resonators