| Patents for G10K 11 - Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (21,150) |
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| 01/12/1982 | US4310069 Method of reducing noise during throttling of vapor and gas streams |
| 01/12/1982 | US4310068 Acoustically lagged structure |
| 01/12/1982 | US4310065 Radial horn |
| 01/12/1982 | US4309906 Apparatus for providing an ultrasonic sectional view |
| 01/08/1982 | EP0029043A4 Packless silencer. |
| 01/07/1982 | WO1982000061A1 Receiver for a multi-element ultrasonic probe echograph and echograph thus equiped |
| 01/06/1982 | EP0042945A1 Apparatus for and method of storing characteristics of an acoustic field |
| 01/06/1982 | EP0042904A1 Hearing aid |
| 01/05/1982 | US4308932 Loudspeaker horn |
| 01/05/1982 | CA1115791A1 Surface acoustic wave devices |
| 12/30/1981 | EP0042685A1 Transducers |
| 12/29/1981 | US4307613 Electronically focused ultrasonic transmitter |
| 12/23/1981 | EP0042288A1 Ultrasonic imaging apparatus |
| 12/23/1981 | EP0041954A1 The cancelling of vibrations transmitted through a fluid in a containing vessel |
| 12/22/1981 | US4307457 Slamming-resistant sonar dome canoe |
| 12/22/1981 | US4307356 Surface acoustic wave device |
| 12/22/1981 | US4306777 Ellipticized optical lens providing balanced astigmatism |
| 12/15/1981 | US4305298 Mechanical resonator arrangements |
| 12/15/1981 | US4305296 Ultrasonic imaging method and apparatus with electronic beam focusing and scanning |
| 12/15/1981 | CA1114491A1 Ultrasonic imaging system |
| 12/10/1981 | WO1981003566A1 Artificial reverberation generator |
| 12/09/1981 | EP0041260A1 Sound absorbing element utilizing the effect of coincidence |
| 12/09/1981 | EP0041197A1 Noise protecting shield with resonators positioned at the edge |
| 12/09/1981 | EP0041185A1 Ultrasonic scanning device |
| 12/08/1981 | US4304133 Positioning device for scanner |
| 12/02/1981 | EP0040613A1 Improved method and apparatus for cancelling vibration. |
| 12/01/1981 | US4303723 Barium sulfate in chlorinated polyethylene coated on pvc impregnated mexh sheet, laminated to metal |
| 12/01/1981 | US4303144 Apparatus for the retroreflection of sound |
| 12/01/1981 | CA1113554A1 Surface wave device having enhanced reflectivity gratings |
| 11/25/1981 | EP0040566A1 Dynamically-focused sector-scan imaging unit |
| 11/25/1981 | EP0040462A1 Electroacoustical audible noise reducing apparatus |
| 11/25/1981 | EP0040376A1 Ultrasonic transducer array |
| 11/24/1981 | US4301890 Sound-absorbing panel |
| 11/18/1981 | EP0039986A1 An acoustic transducer system |
| 11/17/1981 | US4301522 Formation of sonar channels by charge-coupled devices |
| 11/17/1981 | US4300978 Bonding tool for venting honeycomb noise attenuation structure during manufacture |
| 11/17/1981 | CA1112750A1 Liquid crystal acousto-optic cell |
| 11/12/1981 | WO1981003201A1 Noise reduction system |
| 11/11/1981 | EP0039459A1 Silenced turbo-machine |
| 11/11/1981 | EP0039394A2 Sound hood with glare shield for a typewriter or the like |
| 11/10/1981 | US4300219 Bowed elastomeric window |
| 11/10/1981 | US4300217 Acoustic transducer housing |
| 11/10/1981 | US4299883 Compression molding of polycarbodiimide foams |
| 11/03/1981 | US4298964 Towed deployment of acoustic arrays |
| 11/03/1981 | US4298090 Multi-layer acoustic linings |
| 11/03/1981 | US4297886 Ultrasonic flaw detector for immersion testing of articles |
| 10/28/1981 | EP0038746A1 Porous layer used in composite sound absorbing structures and process for making it |
| 10/27/1981 | US4297538 Resonant electroacoustic transducer with increased band width response |
| 10/27/1981 | US4297154 Method of manufacturing expanded reinforcing sheet material |
| 10/27/1981 | US4297037 Vacuum attached vibrator apparatus |
| 10/27/1981 | US4296831 Acoustic liner for attenuating noise |
| 10/27/1981 | US4296753 Support for a transducer for emitting and/or receiving ultrasonic signals in a given angular sector |
| 10/21/1981 | EP0037997A1 Damped structure |
| 10/20/1981 | US4296482 Parametric array Doppler sonar apparatus |
| 10/20/1981 | US4296349 Ultrasonic transducer |
| 10/20/1981 | US4296348 Interdigitated electrode ultrasonic transducer |
| 10/20/1981 | US4295984 Graphite, wetting agent, aluminum silicate or silicon dioxide |
| 10/14/1981 | EP0037620A1 Acoustic impedance matching device |
| 10/14/1981 | EP0037610A1 An arrangement for damping and absorption of sound in rooms |
| 10/13/1981 | US4295211 Inertially released jettisonable airborne buoy |
| 10/13/1981 | US4295102 Surface acoustic wave sensor sensing circuits |
| 10/13/1981 | US4294329 Double layer attenuation panel with two layers of linear type material |
| 10/13/1981 | US4294119 Ultrasonic applicator for ultrasonic scanning of bodies |
| 10/13/1981 | US4294118 Fully automatic ultrasonic flaw detection apparatus |
| 10/13/1981 | CA1110768A1 Method and apparatus for removing room reverberation |
| 10/07/1981 | EP0037047A2 Ultrasonic scanning device for examining viscera |
| 10/06/1981 | US4292832 Method of producing vibration attenuating metallic material |
| 10/01/1981 | WO1981002718A1 Method and apparatus for vibration damping structural elements |
| 09/30/1981 | EP0036794A1 Acoustic imaging system |
| 09/30/1981 | EP0036688A1 Device for exploring by the ultrasonic method with a mosaic of transducers produced in an electrostrictive material |
| 09/29/1981 | US4292356 Method of manufacturing of honeycomb noise attenuation structure and the structure resulting from the method |
| 09/23/1981 | EP0036353A1 Ultrasonic imaging probe with acoustic lens and echographic imaging system comprising such a probe |
| 09/22/1981 | US4291396 Discrete amplitude shading for lobe-suppression in discrete array |
| 09/22/1981 | US4291080 Sound attenuating structural panel |
| 09/22/1981 | US4291079 Method of manufacturing a honeycomb noise attenuation structure and the structure resulting therefrom |
| 09/22/1981 | US4290332 Sound shielding and pick-up device |
| 09/22/1981 | US4290310 Ultrasonic imaging system using digital control |
| 09/22/1981 | US4290309 Diagnostic ultrasound apparatus having automatic isocentric rotator |
| 09/16/1981 | EP0035656A1 Heat pump |
| 09/15/1981 | US4290127 Beamformer with reduced sampling rate |
| 09/15/1981 | US4290035 Mechanical filter and method of acoustically coupling waveguides therein |
| 09/15/1981 | CA1109137A1 Acoustic encoding apparatus |
| 09/09/1981 | EP0035387A2 Ultrasonic imaging apparatus |
| 09/08/1981 | US4288764 Signal processing devices |
| 09/08/1981 | US4287962 Packless silencer |
| 09/08/1981 | US4287770 Method for the manufacture of ultrasonic transducers |
| 09/08/1981 | US4287614 Fastening means for fitting an accessory, especially an ear muff, to a safety helmet |
| 09/02/1981 | EP0034844A1 A direction- and frequency-independent loudspeaker- or microphone-column or a loudspeaker- or microphone-surface |
| 09/02/1981 | EP0034592A1 A method of reducing the adaption time in the cancellation of repetitive vibration. |
| 09/01/1981 | US4287582 Piezo transducers with mechanical amplification for very low frequencies, and acoustic antennas |
| 09/01/1981 | US4287581 Ultrasonic fluid leak detector |
| 09/01/1981 | US4287580 Miniaturized scan within a pulse sonar |
| 09/01/1981 | CA1108061A1 Absorption of acoustic energy from a fluid |
| 08/25/1981 | US4285485 Retractable sonar sensing system |
| 08/19/1981 | EP0033751A1 Ultrasonic transducer using ultra high frequency |
| 08/18/1981 | US4285011 Apparatus for producing an image of an object scanned by ultrasonic wave beams |
| 08/18/1981 | US4284403 Acoustic levitation and methods for manipulating levitated objects |
| 08/18/1981 | US4284169 Bubble noise reduction |
| 08/18/1981 | CA1107383A1 Double serrated piezoelectric transducer |
| 08/18/1981 | CA1107066A1 Portable shell usable as an acoustical or visual enclosure with storable support means |