Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-02-23
2008-11-18
Budd, Mark (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S330000
Reexamination Certificate
active
07453188
ABSTRACT:
A dielectric element includes a lower electrode layer provided on a substrate, a dielectric layer provided on the lower electrode layer and an upper electrode layer provided on the dielectric layer. The dielectric layer has a first dielectric layer provided on a side of the lower electrode layer, and a second dielectric layer provided on a side of the upper electrode layer. The second dielectric layer is a layer comprised mainly of an oxide including four or more kinds of metal element components, and the first dielectric layer does not substantially include at least one component selected from metal elements included in the oxide layer of the second dielectric layer and is comprised mainly of an oxide including at least three components selected from the remaining metal elements without substantially including Ti and Zr elements.
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Fukui Tetsuro
Ifuku Toshihiro
Matsuda Takanori
Wasa Kiyotaka
Budd Mark
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Wasa Kiyotaka
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