| 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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| 08/07/1990 | US4947434 Electronic attenuator |
| 08/07/1990 | US4947356 Aircraft cabin noise control apparatus |
| 08/07/1990 | US4945767 Method and system for controlling ultrasonic probe operation |
| 08/01/1990 | CN1044357A Measure for eliminating noise produced by impact of raindrops |
| 07/31/1990 | US4945520 Hydro-acoustic device for warning sea mammals |
| 07/26/1990 | WO1990008009A1 Device for obtaining focused shock waves |
| 07/26/1990 | DE3902187A1 Sound-insulating screen |
| 07/25/1990 | EP0378979A1 A device for reduction of noise transmission |
| 07/25/1990 | EP0378934A1 Mechanism for providing translatory movement in a marine environment, and sonar device equipped with such a mechanism |
| 07/24/1990 | US4943798 Large truck remote wheel trouble warning system |
| 07/17/1990 | US4942560 Sonar projector array drive signal source |
| 07/17/1990 | US4942327 Solid state electronic device |
| 07/17/1990 | US4942080 Composite material for vibration damping and structural sound damping |
| 07/12/1990 | WO1990007673A1 Viscoelastic damping system |
| 07/10/1990 | US4941135 Ultrasonic field generating device |
| 07/10/1990 | US4940113 Method of acoustically insulating a toilet bowl |
| 07/10/1990 | CA1271543A1 Active vibration isolation system employing an electro-rheological fluid |
| 07/05/1990 | DE3942248A1 Optische baugruppe fuer fahrzeuge mit eingebautem ultraschallsensor Optical assembly for vehicles with built-in ultrasonic sensor |
| 07/04/1990 | EP0376482A2 Masking sound device |
| 07/03/1990 | US4939703 Transducer baffle and sensor using same |
| 07/03/1990 | US4939697 Echo detection and ranging system |
| 07/03/1990 | US4938225 Ultrasonic echograph utilizing at least one piezoelectric transducer with an associated random phase screen, and method of scanning an object by means of such an echograph |
| 07/03/1990 | CA1271128A1 Borehole imaging apparatus |
| 06/28/1990 | WO1990007103A1 Sound reflection unit and audio loudspeaker unit comprising such a sound reflection unit |
| 06/28/1990 | DE3843033A1 High-sensitivity microphone |
| 06/27/1990 | EP0375304A2 Hydrophone and similar sensor |
| 06/27/1990 | EP0375132A1 A miniaturized mechanically steerable ultrasonic probe |
| 06/26/1990 | US4937767 Method and apparatus for adjusting the intensity profile of an ultrasound beam |
| 06/26/1990 | US4936307 Ultrasonic observation system and an ultrasonic endoscope system |
| 06/21/1990 | DE3842759A1 Directionally focused ultrasonic transducer with curved radiating surface |
| 06/21/1990 | DE3841226A1 Ultrasonic transducer with recessed piezoelectric body |
| 06/21/1990 | DE3841187A1 Multilayer sound-damping assembly |
| 06/20/1990 | EP0374013A1 Method of producing composite structures for the absorption of noise, and composite structures, made by this method |
| 06/20/1990 | EP0373981A1 Megaphone and sheet for its construction |
| 06/20/1990 | EP0373603A2 Ultrasonic probe |
| 06/20/1990 | EP0373188A1 Exhaust gas muffler arrangement for combustion engine. |
| 06/20/1990 | CA2005757A1 Mechanism for obtaining a translation motion in a marine environment and sonar equipped with said mechanism |
| 06/19/1990 | US4935838 Structural magnetic vibration controller and method for actively controlling vibrations on stationary components of rotary machinery |
| 06/19/1990 | US4934483 Method of reducing the overflying noise of airplanes having a propeller driven by a piston engine |
| 06/13/1990 | DE3940707A1 Heat and/or sound insulation element - has resilient foam plastics core enclosed by press-fitting sleeve |
| 06/12/1990 | US4932496 Self-supporting sound barrier |
| 06/12/1990 | US4932495 Vocal sound muffling device |
| 06/05/1990 | US4932006 Process for signal transmission without electric connection through a conducting wall, the hull of a ship for example, and a device for implementing same |
| 06/05/1990 | US4930515 Ultrasound probe with multi-orientation tip-mounted transducer |
| 06/05/1990 | US4930512 Hand held spring-loaded ultrasonic probe |
| 05/31/1990 | WO1990005910A1 Wholly microfabricated biosensors and process for the manufacture and use thereof |
| 05/31/1990 | DE3840392A1 Ultraschallwandler fuer die werkstoffpruefung Ultrasonic transducer for the werkstoffpruefung |
| 05/31/1990 | DE3524130A1 Monitoring device |
| 05/30/1990 | EP0370841A1 Ultrasound treatment apparatus using a focalizing and oscillating piezoelectric ceramic device |
| 05/30/1990 | EP0370107A1 Ultrasonic diagnostic apparatus |
| 05/29/1990 | US4930113 Suppression of air-coupled noise produced by seismic vibrators |
| 05/29/1990 | US4929368 Fluoroether grease acoustic couplant |
| 05/29/1990 | US4928915 Mounting apparatus for sonar transducer |
| 05/29/1990 | US4928671 Shock wave generator for generating an acoustical shock wave pulse |
| 05/23/1990 | DE3839243A1 Sound absorber for heating devices |
| 05/22/1990 | US4928264 Noise-suppressing hydrophones |
| 05/22/1990 | US4928263 Hydrophones and similar devices |
| 05/22/1990 | US4926961 Use with communications equipment |
| 05/22/1990 | US4926872 Ultrasonic transducer system and method for the operation thereof |
| 05/22/1990 | CA1269334A1 Compact muffler apparatus and associated methods |
| 05/17/1990 | WO1990005358A1 Amplified transducer |
| 05/16/1990 | EP0368418A1 Device for focussing an ultrasonic beam in three dimensions |
| 05/16/1990 | EP0368098A2 A porous structural unit and a method of preparing the same |
| 05/15/1990 | US4926399 Transducer mounting system |
| 05/15/1990 | US4924976 Tuned array vibration absorber |
| 05/09/1990 | EP0367135A2 Panel of composite material and process for producing the panel |
| 05/08/1990 | US4923057 Electrorheological fluid composite structures |
| 05/08/1990 | US4922754 Acoustic emission transducer and mounting adapter for monitoring metalcutting tools |
| 05/08/1990 | US4922594 Electrodeposition of gold on a polarized piezoelectric disk |
| 05/03/1990 | DE3940402A1 Ultrasonic transducer array element apparent prepositioning - feeds signals, received by active aperture of transducer array, to several delay units |
| 05/02/1990 | EP0366161A2 Electro-sound transducer, and a probe unit or ultrasonic diagnostic apparatus using such a transducer |
| 05/01/1990 | US4922542 Headphone comfort |
| 05/01/1990 | US4922473 Enclosure for suppression of air-coupled noise produced by seismic vibrators |
| 05/01/1990 | US4922469 Acoustic characteristics changing device having variable characteristics |
| 05/01/1990 | US4921415 Cure monitoring apparatus having high temperature ultrasonic transducers |
| 05/01/1990 | US4920966 Ultrasound transducer holder |
| 05/01/1990 | CA1268534A1 Vertical marine flute |
| 04/26/1990 | DE3834853A1 Arrangement for reducing the noise level in the interior of a motor vehicle |
| 04/25/1990 | EP0365408A1 Hinged arm-type mechanism and sonar aerial equipped with such a mechanism |
| 04/25/1990 | EP0364960A2 Sound damping arrangement |
| 04/24/1990 | US4920523 Hydrophone mount |
| 04/24/1990 | US4920522 Method and apparatus for measuring electrical or magnetic fields |
| 04/19/1990 | WO1990004318A1 Air-gap hydrophone |
| 04/19/1990 | WO1990004071A1 System for modifying acoustic environment |
| 04/17/1990 | US4918561 Housing for electronic apparatus |
| 04/17/1990 | US4917096 Portable ultrasonic probe |
| 04/12/1990 | CA2000599A1 System for modifying acoustic environment |
| 04/11/1990 | EP0363032A2 Flextensional transducers |
| 04/10/1990 | US4915114 Shock wave source having central locating system & disposed in a cavity free of shock waves |
| 04/10/1990 | CA1267550A1 Foamed metal and method of producing same |
| 04/05/1990 | WO1990003150A1 Phacoemulsification transducer |
| 04/05/1990 | DE3833341A1 Method and device for measuring the transit time of acoustic waves |
| 04/05/1990 | DE3833340A1 Method and device for measuring the transit time of acoustic waves |
| 04/05/1990 | DE3833339A1 Method and device for measuring the transit time of acoustic waves |
| 04/04/1990 | EP0361968A2 Noise cancellor |
| 04/04/1990 | EP0361757A2 A matching member |
| 04/03/1990 | US4914706 Masking sound device |
| 04/03/1990 | US4913158 Ultrasonic probe for medical diagnostic examinations |
| 04/03/1990 | US4913155 Ultrasonic transducer probe assembly |
| 03/29/1990 | DE3832948A1 Ultrasonic measuring arrangement with ultrasonic transducers arranged in pairs |