Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-11-14
2006-11-14
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S025410, C029S025420, C438S044000
Reexamination Certificate
active
07134179
ABSTRACT:
A process of forming a capacitive audio transducer, preferably having an all-silicon monolithic construction that includes capacitive plates defined by doped single-crystal silicon layers. The capacitive plates are defined by etching the single-crystal silicon layers, and the capacitive gap therebetween is accurately established by wafer bonding, yielding a transducer that can be produced by high-volume manufacturing practices.
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Baney William J.
Betzner Timothy M.
Chilcott Dan W.
Christenson John C.
Freeman John E.
Delphi Technologies Inc.
Funke Jimmy L.
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