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:
Apr. 09, 2002
Filed:
Aug. 31, 2000
Applicant:
Inventors:
Masatoshi Nakagawa, Kyoto, JP;
Makoto Tose, Shiga-ken, JP;
Yoshihiro Koshido, Kanazawa, JP;
Michio Kadota, Kyoto, JP;
Toshimaro Yoneda, Ishikawa-ken, JP;
Takeshi Nakao, Nagaokakyo, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/15 ;
U.S. Cl.
CPC ...
H03H 9/15 ;
Abstract
A surface acoustic wave device includes a piezoelectric plate and at least one interdigital electrode provided on the piezoelectric plate. The interdigital electrode includes a first metallic thin film and a second metallic thin film laminated on the first metallic thin film and containing tantalum as a principal component, and at least a portion of the tantalum of the second metallic thin film is &agr;-tantalum.