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. 15, 2007
Filed:
Mar. 14, 2006
Takuo Hada, Nagaokakyo, JP;
Takeshi Nakao, Nagaokakyo, JP;
Michio Kadota, Kyoto, JP;
Osamu Nakagawara, Rittou, JP;
Takuo Hada, Nagaokakyo, JP;
Takeshi Nakao, Nagaokakyo, JP;
Michio Kadota, Kyoto, JP;
Osamu Nakagawara, Rittou, JP;
Murata Manufacturing Co. Ltd., Kyoto, JP;
Abstract
A surface acoustic wave device includes a piezoelectric substrate and interdigital electrodes disposed on the piezoelectric substrate, wherein each of the interdigital electrodes includes a main electrode layer made of Cu or an alloy that has Cu as its main component. The surface acoustic wave device also includes a tightly adhering layer which is disposed between the main electrode layer and the piezoelectric substrate and whose main component is NiCr, or a tightly adhering layer whose main component is Ti and whose film thickness is within a range of about 18 nm to about 60 nm.