Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2004-09-29
2008-08-05
San Martin, Jaydi A (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C252S06290R, C252S06290R, C501S134000
Reexamination Certificate
active
07408292
ABSTRACT:
The invention relates to a piezoelectric ceramic material having the general composition ABO3with at least a proportion of the PZT ceramic having a composition of the invention with Cu cations. The proportion of Zr and Ti cations is selected based upon the content of Cu cations, such that the ceramic material is tailored to the morphotropic phase boundary. The invention further discloses a method for producing a ceramic material of this type.
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English translation of Written Opinion for PCT/DE2004/002168.
Z. Bryknar et al “ESR and Optical Spectroscopy of Copper-doped PLZT Electro-optic Ceramics” Applied Physics, 1998, pp. 555-559; XP-002344617.
Feltz Adalbert
Florian Heinz
Ottlinger Marion
Ragossnig Sigrid
Sedlmaier Peter
EPCOS AG
Fish & Richardson P.C.
Martin Jaydi A San
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