| 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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| 03/03/1994 | WO1994004265A1 Transducer with high effective membrane of cavitation |
| 03/03/1994 | DE4302333C1 Ultrasonic group radiator mfg. - has swivel lead consisting of identical disc segments, positioned to provide two sound spaces |
| 03/03/1994 | DE4228356A1 Hohlraumresonator Cavity |
| 03/03/1994 | CA2142014A1 Multiple interacting dve algorithm |
| 03/02/1994 | EP0584442A1 Covering element |
| 03/01/1994 | US5289878 Horseshoe impact pad |
| 02/24/1994 | DE4241518C1 Fixed plastics cladding round wheel - is double-skinned forming chambers with indentations towards wheel in outer skin |
| 02/24/1994 | DE4227362A1 SAW element for narrow bandpass filter - uses resonator cascade with each resonator having interdigitated transducers and strip reflectors supported by respective piezo electric substrate |
| 02/23/1994 | EP0583900A1 Improved headphone apparatus |
| 02/22/1994 | US5289436 Ultrasonic waveguide |
| 02/22/1994 | US5289147 Image forming apparatus having system for reducing noise |
| 02/17/1994 | WO1994003888A1 Device for forming channels in an acoustic imaging system |
| 02/17/1994 | DE4230773C1 Ultraschallwandler Ultrasonic transducer |
| 02/16/1994 | EP0480936B1 A method and a system for counteracting marine biologic fouling of a hull or a submerged construction |
| 02/15/1994 | US5286929 Sound absorbing materials |
| 02/15/1994 | US5285789 Ultrasound transducer for imaging a target |
| 02/09/1994 | EP0582404A2 Telephonic headset structure for reducing ambient noise |
| 02/09/1994 | EP0414865B1 Process for masking the noise signals emitted by the sound-emitting mechanical elements of a vehicle, in particular a submerged submarine, and submarine |
| 02/08/1994 | US5285026 Reactive sound attenuator, in particular for air ducts in paper mills |
| 02/08/1994 | US5285025 Loudspeaker horn |
| 02/08/1994 | US5284148 Intracavity ultrasound diagnostic probe using fiber acoustic waveguides |
| 02/03/1994 | WO1994003025A1 Speaker system |
| 02/03/1994 | WO1994002935A1 Method and device for active noise reduction in a local area |
| 02/03/1994 | WO1994002074A1 Method and device for invasive or endoscopic therapy using ultrasonic and laser energy |
| 02/03/1994 | WO1994001989A2 Device for excitation of oscillations and determination of properties of fluid mediums |
| 02/03/1994 | DE4225395A1 Appts. for photo-acoustive spectroscopy - has sample chamber and light source for periodical sample radiation together with pressuure sensor |
| 02/03/1994 | DE4225278A1 Process to sound-proof domestic dishwashing machine container - uses insulating mat section over which is fitted bag-shaped shrink foil |
| 02/02/1994 | EP0581566A2 Active acoustic attenuation and spectral shaping system |
| 02/02/1994 | EP0581565A2 Active acoustic attenuation system with power limiting |
| 02/02/1994 | EP0580808A1 Expandable sonar array. |
| 02/02/1994 | EP0580579A1 Improvements in and relating to transmission line loudspeakers |
| 02/01/1994 | USH1290 Conformable acoustic coupler |
| 02/01/1994 | US5283834 Acoustic system suppressing detection of higher order modes |
| 02/01/1994 | US5283398 For an internal combustion engine |
| 02/01/1994 | CA1326706C Structural magnetic vibration controller and method for actively controlling vibrations on stationary components of rotary machinery |
| 01/27/1994 | DE4322955A1 Invasive-endoscopic therapy instrument with duct for simultaneous transmission of ultrasound and laser radiation - has at least one wave conductor for transmission of sonic energy of proximal ultrasonic source and transmission of light energy from proximal laser radiation source |
| 01/27/1994 | DE4240719C1 Ultraschall-Wandler mit Dämpfungskörper für hohe Arbeitstemperaturen Ultrasonic transducer with damping body for high working temperatures |
| 01/27/1994 | DE4224487A1 Wind tunnel, esp. for aero-acoustic measurements - has acoustically damped deflection corners with channel sections contg. acoustic dampers |
| 01/26/1994 | EP0580304A1 Intracavity ultrasound diagnostic probe using fiber acoustic waveguides |
| 01/26/1994 | EP0579667A1 Active noise recuction |
| 01/23/1994 | CA2074424A1 Acoustic gel |
| 01/20/1994 | WO1994001857A1 Ultrasonic converter device |
| 01/20/1994 | WO1994001810A1 Low cost controller |
| 01/20/1994 | WO1994001629A1 Anechoic structural elements and chamber |
| 01/20/1994 | DE4323313A1 Medical ultrasonic diagnosis system - has ultrasonic converters arranged in specified direction in order to obtain tomographic images of inside of subject using ultrasonic waves which are transmitted from and received by probe |
| 01/19/1994 | EP0579542A1 Noise insulating hollow body |
| 01/19/1994 | EP0518893B1 Ultrasonic testing machine with a rotor with a plurality of testing heads and a transmission device for connecting the testing heads to a stationary electronic device |
| 01/18/1994 | US5279282 Acoustic wave generator having a circulatable, liquid acoustic propagation medium |
| 01/13/1994 | DE4222904A1 Noise neutralising coating - comprises rubber particles embedded in basic mass of hydraulically binding silicate and-or phosphate-contg. binder |
| 01/12/1994 | EP0578272A1 Porous structural unit |
| 01/12/1994 | EP0578212A2 Active control apparatus with an adaptive digital filter |
| 01/12/1994 | EP0578202A2 Vibration damping system for vehicle |
| 01/12/1994 | EP0578008A1 Vehicular radio receiver with speed compensated tone control |
| 01/12/1994 | CN2152521Y Silencer for massage of human eardrum |
| 01/11/1994 | US5278913 Active acoustic attenuation system with power limiting |
| 01/11/1994 | US5278780 System using plurality of adaptive digital filters |
| 01/06/1994 | WO1994000930A1 Control system for periodic disturbances |
| 01/06/1994 | WO1994000911A1 Control system using harmonic filters |
| 01/06/1994 | WO1994000835A1 Holder for ultrasonic power converters |
| 01/05/1994 | DE4322144A1 Vibrator unit using piezoelectric resonator - uses vibrations transmission element between oscillation source and oscillating element exhibiting flexure oscillation anode |
| 01/05/1994 | DE4321949A1 Vibrator unit using piezoelectric resonator - has coupling between resonator and resonance element attached at oscillation mode |
| 01/05/1994 | CN2152274Y Calling device with replay function |
| 01/04/1994 | US5276740 Earphone device |
| 01/04/1994 | US5276658 Acoustic window |
| 01/04/1994 | US5276654 Apparatus for the examination of objects by ultrasonic echography |
| 01/04/1994 | US5276291 Acoustic muffler for high volume fluid flow utilizing Heimholtz resonators with low flow resistance path |
| 01/04/1994 | US5275052 Tenon inspection systems and methods |
| 12/29/1993 | EP0575771A1 Foam panel, in particular shaped article of one or a plurality of foam sheets |
| 12/28/1993 | US5274701 Telephone alerter |
| 12/28/1993 | US5274200 Sound containment enclosure |
| 12/28/1993 | CA1325671C Hand held spring loaded ultrasonic probe |
| 12/23/1993 | WO1993026085A1 Active/passive headset with speech filter |
| 12/23/1993 | WO1993026084A1 Active plus selective headset |
| 12/23/1993 | WO1993025999A1 A transducer arrangement for active sound cancellation systems |
| 12/23/1993 | WO1993025998A1 An active noise cancellation muffler for a motor vehicle |
| 12/23/1993 | WO1993025879A1 Active acoustical controlled enclosure |
| 12/23/1993 | WO1993025167A1 Active selective headset |
| 12/23/1993 | CA2136951A1 Active/passive headset with speech filter |
| 12/23/1993 | CA2136949A1 Active selective headset |
| 12/22/1993 | EP0528910A4 A coupling device |
| 12/21/1993 | US5272285 Sound attenuating machinery cover |
| 12/21/1993 | US5271142 Method for producing a sound-dampened automotive enclosure |
| 12/16/1993 | DE4233252C1 Acoustic signalling display indicating engine running noise in car - uses signal representing depression of accelerator pedal to control throttle in pneumatic line leading to oscillating membrane |
| 12/14/1993 | US5271062 Device for noise attenuation of weaving machine |
| 12/14/1993 | US5269307 Medical ultrasonic imaging system with dynamic focusing |
| 12/14/1993 | US5269292 Pressure pulse source having a positive lens with a pressure sensor |
| 12/09/1993 | WO1993024994A1 Back-masking effect generator |
| 12/09/1993 | WO1993024244A1 Underwater acoustic antenna having a surface sensor |
| 12/08/1993 | EP0572492A1 Method and apparatus for attenuating acoustic vibrations in a medium |
| 12/08/1993 | CN2148993Y Conduit type memory enhancer |
| 12/07/1993 | US5268878 Accelerometer sensor noise reduction method and means |
| 12/07/1993 | US5268877 Circuit for enhancing the amplitude of a signal |
| 12/07/1993 | US5268540 Sound barrier absorption panel |
| 12/07/1993 | US5268539 Acoustic apparatus |
| 12/07/1993 | CA1324893C Vibration transducer mounting |
| 12/02/1993 | DE4218041A1 Ultrasonic pulse echo detector e.g for collision prevention in driverless vehicle - has functional monitoring transducer which evaluates pulse emitted by working transducer and returns standard pulse to it for amplitude check |
| 12/01/1993 | EP0572349A1 Combined force-, strain and sound emission transducer |
| 12/01/1993 | EP0572208A2 Noise controller |
| 12/01/1993 | EP0571992A2 Ultrasonic transducer assembly |
| 12/01/1993 | EP0373188B1 Exhaust gas muffler arrangement for combustion engine |