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:
Jul. 09, 2002
Filed:
Apr. 25, 2001
Applicant:
Inventor:
Yoshihiro Ikeda, Toyama, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 4/108 ; H03H 9/15 ;
U.S. Cl.
CPC ...
H01L 4/108 ; H03H 9/15 ;
Abstract
A piezoelectric resonator utilizes a thickness shear vibration mode, which allows for simplification of the manufacturing process, effectively suppresses ripples in the width mode, has superior frequency characteristics and is inexpensive. This piezoelectric resonator includes a pair of vibration electrodes provided on portions of first and second main surfaces, respectively, of a piezoelectric substrate, and a damping member arranged so as to cover a vibrating portion only on one main surface of the piezoelectric resonator and a pair of side surfaces connecting the first and second main surfaces.