Compositions – Piezoelectric – Lead – zirconium – titanium or compound thereof containing
Reexamination Certificate
2006-11-07
2009-06-16
Koslow, C. Melissa (Department: 1793)
Compositions
Piezoelectric
Lead, zirconium, titanium or compound thereof containing
C310S311000
Reexamination Certificate
active
07547401
ABSTRACT:
Piezoelectric compositions of the formula Pb(1-z)Mz(Mg1/3Nb2/3)x(ZryTi1-y)1-xO3where M can be either Sr or Ba or both, x is between about 0.35 and about 0.40, y is between about 0.36 and about 0.42, and z is between about 0.04 and about 0.08. The piezoelectric ceramic is provided as a composite perovskite structure. Additional materials or dopants can be added to the piezoelectric ceramic of the present invention. Example of dopants that can be added to the piezoelectric ceramic include, but are not limited to: MnO2, Ni2O3, TeO3, TeO2, MoO3, Nb2O5, Ta2O5, CoCO3, and Y2O3. The piezoelectric ceramics of the present invention can be used to fabricate piezoelectric elements for a wide variety of devices that can be fabricated to exhibit high power applications including miniaturized displacement elements, buzzers, transducers, ultrasonic sensors and ultrasonic generators, and the like.
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Abstract for DE 1,646,699.
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Koslow C. Melissa
Piezotech, LLC
Woodard, Emhart, Moriarty, McNett & Henry LLP
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