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:
Mar. 27, 2007
Filed:
May. 13, 2004
Michio Kadota, Kyoto, JP;
Yasunori Takakuwa, Kanazawa, JP;
Seigo Hayashi, Komatsu, JP;
Junya Ago, Nagaokakyo, JP;
Hideya Horiuchi, Nagaokakyo, JP;
Mamoru Ikeura, Nagaokakyo, JP;
Michio Kadota, Kyoto, JP;
Yasunori Takakuwa, Kanazawa, JP;
Seigo Hayashi, Komatsu, JP;
Junya Ago, Nagaokakyo, JP;
Hideya Horiuchi, Nagaokakyo, JP;
Mamoru Ikeura, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A method for adjusting a frequency characteristic of an edge reflection type surface acoustic wave device includes the step of obtaining a frequency characteristic of an edge reflection type surface acoustic wave device having a piezoelectric substrate. The edge reflection type surface acoustic wave device has a pair of edges of the piezoelectric substrate which define a predetermined distance therebetween. The piezoelectric substrate is cut at a position which defines a distance that is shorter than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be higher than the obtained frequency characteristic. The piezoelectric substrate is cut at a position which defines a distance that is longer than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be lower than the obtained frequency characteristic.