Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-11-30
2010-06-01
Benson, Walter (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S311000
Reexamination Certificate
active
07728490
ABSTRACT:
A capacitive micromachined ultrasonic transducer having an ultrasonic wave transmission/reception surface formed by arranging a plurality of transducer cells each of which includes a membrane having a first electrode and a supporting film for supporting the first electrode, and also includes a second electrode arranged being opposite to the first electrode and being spaced apart from the first electrode at a prescribed interval, wherein: the transducer cells are arranged on the basis of resonant frequencies of the transducer cells.
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Igal Ladabaum et al., “Surface Mircomachined Capacitive Ultrasonic Transducers”, IEEE Transaction on Ultrasonics, Ferroelectrics, Anifrequencv Controm, May 1998, vol. 45,No. 3, pp. 678to 690.
Adachi Hideo
Imahashi Takuya
Mizunuma Akiko
Murakami Miyuki
Nemoto Kiyoshi
Benson Walter
Gordon Bryan P
Olympus Corporation
Scully , Scott, Murphy & Presser, P.C.
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