Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2007-03-05
2010-06-01
Benson, Walter (Department: 2837)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C310S311000, C310S31300R, C310S31300R
Reexamination Certificate
active
07728697
ABSTRACT:
According to some embodiments, a pre-poled, single-domain body of a ferroelectric crystalline material such as lithium tantalate or lithium niobate is electrically reduced by applying a voltage across the body in a non-oxidizing environment while the body is heated to a process temperature below its Curie temperature. The voltage generates an electric field along the polar axis of the body. Electrodes may be formed on the body surface by applying an acetate-based silver paint. Exemplary methods allow achieving electrical conductivity values of 10−11to 10−9Siemens/cm.
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Galambos Ludwig
Miles Ronald O.
Benson Walter
Gordon Bryan P
Law Office of Andrei D. Popovici, PC
MG Materials Corporation
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