Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-04-08
2009-11-24
Budd, Mark (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S363000
Reexamination Certificate
active
07622854
ABSTRACT:
In a piezoelectric element having a substrate, a lower electrode layered on the substrate, a piezoelectric body made of ceramic layered on top of the lower electrode and an upper electrode layered on the piezoelectric body, wherein a first metal layer is provided between the substrate and the lower electrode, a second metal layer is provided between the lower electrode and the piezoelectric body, and the first metal layer and the second metal layer are made of a metal selected from among metals of which the ionization tendency is not less than that of Cu, oxides of metals of which the ionization tendency is not less than that of Cu, and alloys of metals of which the ionization tendency is not less than that of Cu.
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Maeda Shigeo
Murayama Manabu
Budd Mark
Funai Electric Co. Ltd.
Osha • Liang LLP
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