Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2004-01-28
2008-11-18
Martin, J. A San (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S31300R, C333S189000, C333S195000
Reexamination Certificate
active
07453184
ABSTRACT:
A boundary acoustic wave device includes a LiNbO3substrate defining a first medium layer having a relatively high sound velocity and a SiO2film defining a second medium layer having a relatively low sound velocity, an electroacoustic transducer and reflectors disposed between the first medium layer and the second medium layer, and recess portions and/or protrusion portions provided in the upper surface of the SiO2film.
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Keating & Bennett LLP
Martin J. A San
Murata Manufacturing Co. Ltd.
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