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. 10, 2004
Filed:
Sep. 26, 2002
Applicant:
Inventor:
Kenichi Anasako, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/25 ; H01L 4/1047 ;
U.S. Cl.
CPC ...
H03H 9/25 ; H01L 4/1047 ;
Abstract
A surface acoustic wave (SAW) device comprises a piezoelectric substrate, at least one alloy layer made of aluminum (Al) and copper (Cu), at least one oxide layer, and at least one metal layer made of a metal other than Al, wherein the alloy layer, oxide layer, and metal layers are laminated one upon another.