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Class Information
Number: 367/164
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Piezoelectric > Single element having a plurality of electrodes
Description: Subject matter wherein a plurality of electrodes on its surface form a plurality of discrete radiating areas.










Patents under this class:

Patent Number Title Of Patent Date Issued
8681586 Free charge carrier diffusion response transducer for sensing gradients Mar. 25, 2014
8027225 Methods and systems for seismic sensors Sep. 27, 2011
7772746 Thermacoustic piezoelectric generator Aug. 10, 2010
7262542 Ultrasound radiation device into a material Aug. 28, 2007
6784600 Ultrasonic membrane transducer for an ultrasonic diagnostic probe Aug. 31, 2004
6640631 System and measuring sound velocity in material Nov. 4, 2003
6637268 Vibration displacement sensing system Oct. 28, 2003
6337835 Electromechanical converter and method of producing same Jan. 8, 2002
6317389 Ultrasound-signal radiating device Nov. 13, 2001
6108275 Phased beam transducer Aug. 22, 2000
5991239 Confocal acoustic force generator Nov. 23, 1999
5750272 Active and adaptive damping devices for shock and noise suppression May. 12, 1998
5550793 Unidirectional wave transducer Aug. 27, 1996
5530683 Steerable acoustic transducer Jun. 25, 1996
5471721 Method for making monolithic prestressed ceramic devices Dec. 5, 1995
5142511 Piezoelectric transducer Aug. 25, 1992
5072426 Self-monitoring shock wave hydrophone Dec. 10, 1991
5056069 Ultrasonic sensor Oct. 8, 1991
5001681 Monolaminar piezoelectric bender bar Mar. 19, 1991
4950936 Piezoelectric sandwich polymer transducer Aug. 21, 1990
4933919 Hydrophone Jun. 12, 1990
4914565 Piezo-electric transducer having electrodes that adhere well both to ceramic as well as to plastics Apr. 3, 1990
4835747 Compensating sensor device for a charge amplifier circuit used in piezoelectric hydrophones May. 30, 1989
4780860 Beam forming device Oct. 25, 1988
4734611 Ultrasonic sensor Mar. 29, 1988
4725994 Ultrasonic transducer with a multiple-folded piezoelectric polymer film Feb. 16, 1988
4709360 Hydrophone transducer with negative feedback system Nov. 24, 1987
4706229 Electroacoustic transducer Nov. 10, 1987
4704556 Transducers Nov. 3, 1987
4399387 Ultrasonic wave transducer Aug. 16, 1983
4347593 Piezoceramic tubular element with zero end displacement Aug. 31, 1982
4344159 Ultrasonic transducer Aug. 10, 1982
4315324 Directly modulated sonobuoy transmitter using surface acoustic wave sensor Feb. 9, 1982
4296348 Interdigitated electrode ultrasonic transducer Oct. 20, 1981
4268912 Directional hydrophone suitable for flush mounting May. 19, 1981
4228532 Piezoelectric transducer Oct. 14, 1980
4173009 Ultrasonic wave transducer Oct. 30, 1979
4170185 Preventing marine fouling Oct. 9, 1979
4097835 Dual transducer arrangement for ultrasonic imaging system Jun. 27, 1978
4034332 Ultrasonic transmitting and receiving devices using dielectric transducers Jul. 5, 1977











 
 
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