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:
Jan. 20, 2009
Filed:
Oct. 18, 2006
Takehiko Yamakawa, Osaka, JP;
Hiroshi Yamaguchi, Osaka, JP;
Hiroshi Nakatsuka, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Keiji Onishi, Osaka, JP;
Toshio Ishizaki, Hyogo, JP;
Takehiko Yamakawa, Osaka, JP;
Hiroshi Yamaguchi, Osaka, JP;
Hiroshi Nakatsuka, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Keiji Onishi, Osaka, JP;
Toshio Ishizaki, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A series piezoelectric resonatoris connected in series between an input terminaland an output terminal. A first electrode of a parallel piezoelectric resonatoris connected to a connection point between the input terminaland the series piezoelectric resonator, and a second electrode of the parallel piezoelectric resonatoris connected to a first terminal of an inductor. A first electrode of a parallel piezoelectric resonatoris connected to a connection point between the series piezoelectric resonatorand the output terminal, and a second electrode of the parallel piezoelectric resonatoris connected to a first terminal of an inductor. Second terminals of the inductorsandare grounded. An additional piezoelectric resonatoris connected between the second electrode of the parallel piezoelectric resonatorand the second electrode of the parallel piezoelectric resonator