Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-05-09
2006-05-09
Budd, Mark (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C029S025350, C310S312000, C310S31300R, C310S31300R, C333S155000
Reexamination Certificate
active
07042131
ABSTRACT:
A surface acoustic wave device includes, on a piezoelectric substrate, at least one surface acoustic wave filter and at least one surface acoustic wave resonator that is connected in series and/or parallel to the surface acoustic wave filter. A film having a positive frequency-temperature characteristic is disposed so as to cover at least one of the at least one surface acoustic wave resonator, except for a region in which the surface acoustic wave filter is provided.
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Budd Mark
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
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