Metal working – Piezoelectric device making
Reexamination Certificate
2005-02-01
2005-02-01
Arbes, Carl J. (Department: 3729)
Metal working
Piezoelectric device making
C029S825000, C029S412000, C029S417000, C029S841000, C029S855000
Reexamination Certificate
active
06848153
ABSTRACT:
A method of manufacture of a surface acoustic wave device which includes a step of applying a photosensitive film resist on a substrate and forming a photosensitive film resist layer over at least a portion of a surface of the substrate; a step of forming acoustic absorbers only at the two sides orthogonal to the direction of the surface acoustic wave transmission; a step of placing in a package a surface acoustic wave element obtained by cutting and dividing the substrate and electrically connecting a connection electrode of the surface acoustic wave element with an external terminal of the package; and a step of sealing an opening of the package with a lid, wherein the main surface of the acoustic absorbers is formed parallel to the surface of the substrate.
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Fujii Kunihiro
Koga Takafumi
Matsuo Satoshi
Murakami Kozo
Takada Masahiro
Matsushita Electric - Industrial Co., Ltd.
Nguyen Tai Van
LandOfFree
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