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:
Aug. 26, 2003
Filed:
May. 21, 2001
Applicant:
Inventor:
Shigeo Ojima, Toyama-ken, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/58 ; H03H 9/60 ;
U.S. Cl.
CPC ...
H03H 9/58 ; H03H 9/60 ;
Abstract
An energy-trap piezoelectric filter has a construction such that first and second piezoelectric substrates are laminated with an adhesive sheet therebetween. The elasticity modulus of the adhesive sheet is within the range of about 0.5 MPa to about 3000 MPa. In addition, the adhesive sheet is provided with at least one notch in which a material that is used to form external electrodes is inserted.