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Class Information
Number: 181/142
Name: Acoustics > Wave generation
Description: Subject matter for producing a sonic compressional wave.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8651230 High capacity ultrasonic reactor system Feb. 18, 2014
8403106 Man-portable non-lethal pressure shield Mar. 26, 2013
8292436 Projection screen and image projection system using the same Oct. 23, 2012
8199931 Parametric loudspeaker with improved phase characteristics Jun. 12, 2012
8162097 Sound wave generator and method for producing the same, and method for generating sound waves using the sound wave generator Apr. 24, 2012
8130593 Pressure wave generator and temperature controlling method thereof Mar. 6, 2012
8101929 Diffraction free, self-bending airy wave arrangement Jan. 24, 2012
7766121 Methods and apparatus for conditioning and degassing liquids and gases in suspension Aug. 3, 2010
7744729 Ultrasonic energy system and method including a ceramic horn Jun. 29, 2010
7731823 Ultrasonic energy system and method including a ceramic horn Jun. 8, 2010
7650006 Method to generate a plane acoustic wave front, a plane wave channel, a loudspeaker construction and a linear loudspeaker array Jan. 19, 2010
7641023 Mechanism generating at least one type of sonority Jan. 5, 2010
7297238 Ultrasonic energy system and method including a ceramic horn Nov. 20, 2007
7004282 Ultrasonic horn Feb. 28, 2006
6850623 Parametric loudspeaker with improved phase characteristics Feb. 1, 2005
6834992 Acoustic pyrometer Dec. 28, 2004
6818128 Apparatus for directing ultrasonic energy Nov. 16, 2004
6652992 Corrosion resistant ultrasonic horn Nov. 25, 2003
6578659 Ultrasonic horn assembly Jun. 17, 2003
6478108 Speaker box Nov. 12, 2002
6359835 High intensity directed light and sound crowd dispersion device Mar. 19, 2002
6341518 Ultrasonic standard Jan. 29, 2002
6327221 Steered beam ultrasonic sensor for object location and classification Dec. 4, 2001
6201878 Portable compact disc player Mar. 13, 2001
6173803 High amplitude sound wave generator Jan. 16, 2001
6151402 Vibration transducers Nov. 21, 2000
6065562 System for imparting compressional and shear waves into the earth May. 23, 2000
5973999 Acoustic cannon Oct. 26, 1999
5613940 Synthesizing array for three-dimensional sound field specification Mar. 25, 1997
5595585 Low frequency sound distribution of rotary fiberizer veils Jan. 21, 1997
5484969 High-volume acoustic transducer Jan. 16, 1996
5350887 Method and apparatus for the generation of low frequency sound Sep. 27, 1994
5321388 High efficiency phase and amplitude matched multiple horn electronic siren Jun. 14, 1994
5246595 Process for degassing a coupling liquid of a pressure wave generator apparatus employing coupling liquid by chemical route, coupling liquid thus treated and shock wave generator using such a c Sep. 21, 1993
5233570 Low frequency underwater acoustic radiator Aug. 3, 1993
5214620 Electrically driveable shockwave source May. 25, 1993
5200932 Underwater audible signalling device Apr. 6, 1993
5109948 Frequency controlled motor driven low frequency sound generator May. 5, 1992
5081900 Resonance damage process Jan. 21, 1992
4938136 Resonant acousticmagnetic minisweeper Jul. 3, 1990
4852973 Diffraction free arrangement Aug. 1, 1989
4796725 Electrostatic transducer Jan. 10, 1989
4755973 Space surveillance apparatus with sound source and method of short-range space surveillance Jul. 5, 1988
4713799 Ultrasonic horn with sidelobe suppressing centerpiece Dec. 15, 1987
4541687 Signal processing system and method Sep. 17, 1985
4462483 Solid propellant sound generator for coagulation of aerosols Jul. 31, 1984
4400804 Driver for high power sonar systems Aug. 23, 1983
4387785 Optical device for monitoring critical speeds of a rotating member Jun. 14, 1983
4387451 Low frequency nonresonant acoustic projector Jun. 7, 1983
4384633 Perforated acoustic transport member May. 24, 1983

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