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. 26, 2015
Filed:
Jun. 25, 2010
Applicant:
Hiroyuki Tanaka, Kyoto, JP;
Inventor:
Hiroyuki Tanaka, Kyoto, JP;
Assignee:
KYOCERA Corporation, Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/72 (2006.01); H03H 9/64 (2006.01); H03H 9/00 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/0038 (2013.01); H03H 9/6436 (2013.01); H03H 9/0042 (2013.01); H03H 9/02913 (2013.01); H03H 9/725 (2013.01);
Abstract
An SAW filter and a duplexer excellent in electrical characteristics will be provided. An SAW filter has a piezoelectric substrate, a surface acoustic wave elementhaving a first IDT electrodeon the piezoelectric substrate, a first signal lineelectrically connected to the first IDT electrode, and a ring-shaped reference potential linewhich has a first intersecting portion intersecting with the first signal linethrough an insulation memberand surrounds the surface acoustic wave element