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Class Information
Number: 367/166
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Piezoelectric > Liquid filled
Description: Subject matter wherein the transducer is filled with a liquid for transmitting acoustic wave to or from a fluid medium.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8347482 Method for manufacturing ferrite magnet device, method for manufacturing non-reciprocal circuit device, and method for manufacturing composite electronic component Jan. 8, 2013
8245394 Method for producing a rigid magnetic circuit component Aug. 21, 2012
7757376 Method for manufacturing of a magnetic circuit Jul. 20, 2010
7237564 Distribution of energy in a high frequency resonating wafer processing system Jul. 3, 2007
6879546 Gel-filled seismic streamer cable Apr. 12, 2005
6751162 Seismic sensor Jun. 15, 2004
6584038 Device for receiving seismic waves and method for coupling them with a solid environment Jun. 24, 2003
6275448 Pressure-compensated acceleration-insensitive hydrophone Aug. 14, 2001
5889731 Vibration detector Mar. 30, 1999
5777550 High reliability instrument system Jul. 7, 1998
5675556 Hydrophone structure and method Oct. 7, 1997
5517467 Undersea acoustic antenna with surface sensor May. 14, 1996
5459695 Seismic cable with reusable skin Oct. 17, 1995
5404340 Marine seismic streamer with a device for damping oscillations Apr. 4, 1995
5279282 Acoustic wave generator having a circulatable, liquid acoustic propagation medium Jan. 18, 1994
5229980 Broadband electroacoustic transducer Jul. 20, 1993
5218576 Underwater transducer Jun. 8, 1993
5144597 Low-frequency hydrophone and sonar array including such hydrophones Sep. 1, 1992
5126980 Self-orienting vertically sensitive accelerometer Jun. 30, 1992
5115880 Piezoelectric seismic vibrator with hydraulic amplifier May. 26, 1992
5068836 Sound generating transducer Nov. 26, 1991
5063542 Piezoelectric transducer with displacement amplifier Nov. 5, 1991
5046056 Self-orienting vertically sensitive accelerometer Sep. 3, 1991
5033032 Air-gap hydrophone Jul. 16, 1991
5003285 Transducer array Mar. 26, 1991
4996675 Signal sensor insensitive to static pressure variations Feb. 26, 1991
4972389 Electroacoustic transducer Nov. 20, 1990
4918666 Tubular piezo-electric sensor with high sensitivity Apr. 17, 1990
4899845 Echographic technique-based method and apparatus to detect structure and anomalies of the subsoil and/or sea bottom and the like Feb. 13, 1990
4890687 Borehole acoustic transmitter Jan. 2, 1990
4876675 Towed piezoelectric cable Oct. 24, 1989
4855964 Vented-pipe projector Aug. 8, 1989
4803671 Sensor for acoustic shockwave pulses Feb. 7, 1989
4799752 Fiber optic gradient hydrophone and method of using same Jan. 24, 1989
4791617 Motion sensing device Dec. 13, 1988
4780862 Borehole televiewer Oct. 25, 1988
4733379 Line array transducer assembly Mar. 22, 1988
4706229 Electroacoustic transducer Nov. 10, 1987
4694440 Underwater acoustic wave transmitting and receiving unit Sep. 15, 1987
4674067 Method and apparatus for generating low frequency acoustic energy waves Jun. 16, 1987
4596903 Pickup device for picking up vibration transmitted through bones Jun. 24, 1986
4571579 Swimming pool alarm Feb. 18, 1986
4505014 Accelerometer manufacturing method Mar. 19, 1985
4491939 Hydrophone cable Jan. 1, 1985
4432080 Subwavelength monopole underwater sound radiator Feb. 14, 1984
4409681 Transducer Oct. 11, 1983
4364117 Shock-hardened, high pressure ceramic sonar transducer Dec. 14, 1982
4345473 Vertical component accelerometer Aug. 24, 1982
4334296 Seismic method and apparatus Jun. 8, 1982
4326275 Directional transducer Apr. 20, 1982

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