| 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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| 05/18/1994 | EP0596971A1 Noise reduction system |
| 05/18/1994 | EP0461215B1 Noise-damping combination |
| 05/18/1994 | CN1086745A Unit for fastening of altrosonic power transferer |
| 05/11/1994 | WO1994010681A1 Ultrasonic probe and method of operating it |
| 05/11/1994 | EP0596088A1 Mineral fibres capable of dissolving in a physiological medium. |
| 05/11/1994 | DE4329411A1 Vehicle and industrial heat and sound insulating material - has wave profiled layered aluminium foils connected only at edge seam pressure points and are triangular in shape having flattened peaks |
| 05/11/1994 | DE4237513A1 Noise insulation panel esp. for engine compartment |
| 05/10/1994 | US5311453 Variable point sampling |
| 05/10/1994 | US5311446 Signal processing system for sensing a periodic signal in the presence of another interfering signal |
| 05/10/1994 | US5310137 Helicopter active noise control system |
| 05/10/1994 | US5309897 Apparatus for generating acoustic rarefaction pulses |
| 05/10/1994 | CA2001669C Ultrasonic treatment device by means of a focalizing and oscillating piezoelectrical ceramic |
| 05/05/1994 | DE4315759C1 Sound-absorbent glazing for building - comprises perforated plate with small-diameter holes close together |
| 05/04/1994 | EP0595695A1 Ultrasonic sounding system with digital phase control |
| 05/04/1994 | EP0595572A2 Ultrasonic parametric amplifier |
| 05/04/1994 | EP0595457A1 Noise cancellation apparatus |
| 05/04/1994 | EP0595400A1 Device for the active impedance adaptation between an ultrasonic transducer and the generator of impulse signals for this transducer |
| 05/04/1994 | EP0594626A1 High efficiency fan with adaptive noise cancellation |
| 05/04/1994 | CN1086305A Acoustic resonator having mode-alignment-cancelled harmonics |
| 05/03/1994 | US5309412 Element releasing system |
| 05/03/1994 | US5309411 For generating sonic waves |
| 05/03/1994 | US5309409 Target detection system |
| 05/03/1994 | US5309378 Multi-channel adaptive canceler |
| 05/03/1994 | CA1329143C Speaker system |
| 05/03/1994 | CA1329141C Gas blow-off attenuator |
| 05/03/1994 | CA1329140C Active sound attenuation system for engine exhaust systems and the like |
| 04/30/1994 | CA2109440A1 Noise cancellation apparatus |
| 04/28/1994 | WO1994009484A1 Active acoustic transmission loss box |
| 04/28/1994 | WO1994009483A1 Multiple source self noise cancellation |
| 04/28/1994 | WO1994009482A1 Adaptive control system |
| 04/28/1994 | WO1994009481A1 Adaptive control system |
| 04/28/1994 | WO1994009480A2 Adaptive control system |
| 04/28/1994 | WO1994008732A1 Process and device for acoustically irradiating and transferring vibrations to an acoustic irradiation fluid containing particles |
| 04/28/1994 | WO1994008540A1 Active gas turbine (jet) engine noise suppression |
| 04/28/1994 | DE4236255A1 Acoustic lens for plane-wave to spherical-wave transformation - divides tubular acoustic waveguide between two media sepd. by eg polystyrene with conical and ellipsoidal faces |
| 04/28/1994 | CA2147183A1 Active gas turbine (jet) engine noise suppression |
| 04/27/1994 | EP0594400A1 Ultrasonic waveguide |
| 04/27/1994 | EP0594399A1 Monochromatic ultrasonic transducer |
| 04/26/1994 | US5305756 Volumetric ultrasonic imaging with diverging elevational ultrasound beams |
| 04/26/1994 | US5305731 Apparatus for generating acoustic wave having a liquid lens with an adjustable focal length |
| 04/26/1994 | CA1328823C Low pressure acoustic reflector for conformal arrays |
| 04/21/1994 | DE4334453A1 Plastic foam components - comprise parts consolidated thermally to higher density than elsewhere and preferably contain reused scrap foam with e.g. flame retardant. |
| 04/21/1994 | DE4310002C1 Noise discharge connecting component - has body with projection having recess in which seal sits and has friction surfaces between body and screw |
| 04/21/1994 | DE4236155A1 Actively reducing internal noise in motor vehicle - using measuring microphone(s) and loudspeaker(s) to compensate detected noise by propagating sound field of opposite phase to that of disturbing noise |
| 04/20/1994 | EP0593045A2 Adaptive noise silencing system of combustion apparatus |
| 04/20/1994 | EP0592693A1 Noise control device |
| 04/19/1994 | US5305387 Apparatus in an active noise reduction system |
| 04/19/1994 | US5304750 Absorber for electromagnetic and acoustic waves |
| 04/19/1994 | US5304415 Sound absorptive material |
| 04/19/1994 | CA1328680C Localization and therapy system for treatment of spatially oriented focal disease |
| 04/14/1994 | WO1994008253A1 Therapy device for destroying a target by acoustic signals featuring time reversal |
| 04/14/1994 | WO1994007689A1 Multi-layer laminate |
| 04/13/1994 | EP0591313A1 Vibration damping constructions using aromatic epoxy high temperature damping materials. |
| 04/13/1994 | CN2161803Y Impedance reflection pipe type dissipative muffler |
| 04/12/1994 | US5303210 Integrated resonant cavity acoustic transducer |
| 04/12/1994 | US5303208 Side looking sonar transducer |
| 04/12/1994 | US5301674 Method and apparatus for focusing transmission and reception of ultrasonic beams |
| 04/06/1994 | EP0591061A1 Method and device for acoustic examination with time reversal |
| 04/06/1994 | EP0590445A1 Vibration absorbing headliner assembly |
| 04/06/1994 | EP0590350A2 Noise controller |
| 04/06/1994 | EP0590193A1 Ultrasonic transducer arrangement with acoustic impedance matching layer |
| 04/06/1994 | EP0590176A1 Ultrasonic transducer arrangement with acoustic matching layer |
| 04/06/1994 | CN1024143C Assembly with vibration-damping coating and making method |
| 04/05/1994 | US5301168 Ultrasonic transducer system |
| 04/05/1994 | US5299578 Endoscopic probe |
| 03/31/1994 | WO1994007303A1 Variable point sampling |
| 03/31/1994 | WO1994007236A1 Ultrasonic transducer |
| 03/31/1994 | DE4333384A1 Vibration damping mounting system for motor vehicle - uses controlled mountings with adjustment of control ratio dependent on detected operating parameter |
| 03/31/1994 | DE4333157A1 Active vibration damping system for motor vehicle - with suppression stage in vibration generator drive control responsive to detected parameter level |
| 03/31/1994 | DE4333145A1 Active vibration damping system for motor vehicle - uses vibration generator for active damping of detected vibration within passenger space due to vehicle engine |
| 03/30/1994 | EP0589516A2 Silencer arrangement for combustion engines |
| 03/30/1994 | EP0589082A1 Intracavitary ultrasonic probe |
| 03/29/1994 | US5298694 Acoustical insulating web |
| 03/29/1994 | CA1328124C Ultrasound generator and emitter |
| 03/23/1994 | EP0588732A1 Method of ultrasonic testing of a metal piece |
| 03/23/1994 | EP0588702A1 Method of forming the output surface of a focussing ultrasonic transducer and a transducer comprising such an output surface |
| 03/23/1994 | EP0588182A2 Foam sound damping or insulating element manufacturing method thereof and its use |
| 03/22/1994 | US5297109 Piling and pier inspection apparatus and method |
| 03/22/1994 | US5296839 Sound generating apparatus |
| 03/22/1994 | US5295641 System for reducing vibrations in the cabin of an aircraft |
| 03/22/1994 | CA1328004C Aircraft cabin noise control apparatus |
| 03/17/1994 | WO1994006046A1 Optical reflector arrays and apparatus using such arrays |
| 03/17/1994 | WO1994005207A1 Disposable sensing device with cutaneous conformance |
| 03/16/1994 | EP0586831A2 Sound absorption method for motor vehicles |
| 03/16/1994 | EP0586452A1 Noise attenuation panel |
| 03/15/1994 | US5295192 Electronic noise attenuation method and apparatus for use in effecting such method |
| 03/15/1994 | US5295120 Hermetically sealed ultrasonic transducer system |
| 03/15/1994 | US5294861 Ultrasonic probe |
| 03/10/1994 | DE4229631A1 Acoustic lens with variable focus - has one ring shaped deformable lens wall with outer edge kept bending moment free and inner area displaced by adjuster for focussing |
| 03/10/1994 | DE4229630A1 Acoustic lens with variable focal length for acoustic working medium - has optical fluid and pressure equalising medium between incident and emergent lens walls |
| 03/09/1994 | EP0586261A1 Pulse combustor |
| 03/09/1994 | EP0585875A2 Vibration damping system for vehicle |
| 03/09/1994 | EP0585772A1 Reduction of noise emission of transformers |
| 03/08/1994 | US5293425 Active noise reducing |
| 03/08/1994 | US5293010 Sound dampening device for horns |
| 03/08/1994 | US5291892 Ultrasonic flow imaging |
| 03/03/1994 | WO1994005005A1 Active high transmission loss panel |
| 03/03/1994 | WO1994005004A1 Ultrasonic transducer |
| 03/03/1994 | WO1994004980A1 Multiple interacting dve algorithm |
| 03/03/1994 | WO1994004866A1 Active force cancellation system |