| 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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| 08/12/1981 | EP0033711A2 Sound barrier material |
| 08/12/1981 | EP0033463A2 Ultrasonic multi-probe |
| 08/11/1981 | US4283781 In-flight hydrophone deployment system for underwater vehicles |
| 08/11/1981 | US4283606 Coaxial loudspeaker system |
| 08/11/1981 | US4283457 Comprising a nonflammable fiber mat or open-cell foam backing bonded to a non-woven needle punched mat |
| 08/11/1981 | US4282879 Ultrasonic diagnosing apparatus |
| 08/11/1981 | US4282755 Transducer drive and control |
| 08/05/1981 | EP0033071A1 Ultrasonic transducer |
| 08/04/1981 | US4282590 Adjustable position sonar transducer depth finder |
| 08/04/1981 | US4282577 Process and apparatus for automatically adjusting ultrasonic test heads |
| 08/04/1981 | US4281661 Medical echo sounding apparatus with a wide sector scanning angle |
| 08/04/1981 | US4281550 Curved array of sequenced ultrasound transducers |
| 07/29/1981 | EP0032739A1 A multielement acoustic transducer, a method of manufacturing the same, and use of the same in an acoustic imaging instrument |
| 07/29/1981 | EP0032732A1 Ultrasonic imaging equipment |
| 07/28/1981 | US4281407 Surface acoustic wave pickup and recording device |
| 07/28/1981 | US4280354 Acoustic method and apparatus for measuring surfaces of wafers and similar articles |
| 07/21/1981 | CA1105394A1 Honeycomb core with internal septum, and method of making same |
| 07/15/1981 | EP0032095A1 Acoustic radar antenna matching process and device for carrying it out |
| 07/14/1981 | US4278146 Sound barrier |
| 07/14/1981 | US4277979 Scan-control apparatus for pulse-echo ultrasonic imaging system incorporating oscillated transducer |
| 07/08/1981 | EP0031614A1 Curved array of sequenced ultrasound transducers |
| 07/08/1981 | EP0031510A1 Ultrasonic scanning equipment |
| 07/07/1981 | US4277839 Transducer array release and pressure compensation system |
| 07/07/1981 | US4277712 Acoustic electric transducer with slotted base |
| 07/07/1981 | US4277711 Acoustic electric transducer with shield of controlled thickness |
| 07/07/1981 | US4277367 Phantom material and method |
| 07/07/1981 | US4276779 Dynamically focussed array |
| 07/01/1981 | EP0031049A2 Acoustic transducer |
| 06/30/1981 | US4276491 Focusing piezoelectric ultrasonic medical diagnostic system |
| 06/24/1981 | EP0030854A2 Surface acoustic wave transducer |
| 06/23/1981 | US4275461 Parallel digital beam-forming system |
| 06/23/1981 | US4274421 Echo sound apparatus including an oscillating mirror for use in medical diagnosis |
| 06/23/1981 | US4274353 Acoustic imaging system for wire guided torpedo |
| 06/17/1981 | EP0030458A2 Transducer drive and control in ultrasound imaging systems |
| 06/16/1981 | US4273213 Element for sonic and vibratory absorption |
| 06/10/1981 | EP0029898A2 Variable resonators for noise attenuation |
| 06/09/1981 | US4272835 Master buoy system for acoustic array deployment, using underwater glide bodies remotely launched from a submerged pod |
| 06/03/1981 | EP0029578A1 Apparatus for ultrasonic imaging |
| 06/02/1981 | US4271219 Method of manufacturing an adhesive bonded acoustical attenuation structure and the resulting structure |
| 05/28/1981 | WO1981001480A1 Improved method and apparatus for cancelling vibration |
| 05/28/1981 | WO1981001479A1 The cancelling of vibrations transmitted through a fluid in a containing vessel |
| 05/27/1981 | EP0029288A1 An acoustical-damping fibrous or cellular material, a process for its preparation and a latex composition useful for its preparation |
| 05/27/1981 | EP0029140A1 Sound unit for vibrating bar instruments |
| 05/27/1981 | EP0029112A2 Sound damping for doors and windows |
| 05/27/1981 | EP0029043A1 Packless silencer. |
| 05/26/1981 | US4269882 Method of manufacturing of honeycomb noise attenuation structure and the structure resulting therefrom |
| 05/26/1981 | US4269800 Process for the preparation of a composite mat consisting of a layer of mineral wool and a layer of steel wool |
| 05/26/1981 | US4269176 Treatment head for electromedical diagnostic or therapeutic treatment of body parts |
| 05/26/1981 | US4269067 Method and apparatus for focusing elastic waves converted from thermal energy |
| 05/26/1981 | CA1101982A1 Rotation of characteristic vectors with piezoelectric coupling |
| 05/26/1981 | CA1101981A1 Beam forming system |
| 05/26/1981 | CA1101980A1 Ultrasonic transducer probe |
| 05/19/1981 | CA1101536A1 Device for the excitation of waves and especially ultrasonic waves including a cell |
| 05/14/1981 | WO1981001306A1 Acoustic filter silencer |
| 05/13/1981 | EP0028325A1 Ultrasonic sector-scanning device |
| 05/13/1981 | EP0028239A1 Sound absorbent. |
| 05/12/1981 | US4267584 Permutating analog shift register variable delay system |
| 05/06/1981 | EP0027945A2 Composite panel |
| 05/05/1981 | US4265955 Honeycomb core with internal septum and method of making same |
| 05/05/1981 | CA1100620A1 Digital output force sensor using surface acoustic waves |
| 05/05/1981 | CA1100552A1 Vibration absorbing track wheel |
| 04/29/1981 | EP0027544A2 Acoustic surface wave component |
| 04/29/1981 | EP0027542A2 Ultrasonic transducer element |
| 04/22/1981 | EP0027315A1 Machinery with noise suppression screen |
| 04/21/1981 | US4262378 Buoyant capsule depth controller |
| 04/16/1981 | WO1981001069A1 Noise suppression arrangement for engine enclosures |
| 04/07/1981 | US4260928 Electro-acoustic transducer with horn and reflector |
| 03/31/1981 | US4259385 Rubber-based foamable adhesive |
| 03/31/1981 | US4258824 Sound muffling baffle for drainage device |
| 03/31/1981 | US4258754 Method and apparatus for fluid sound amplification and detection of low frequency signals |
| 03/31/1981 | US4258576 Pulse-echo ultrasonic wave-energy imaging system incorporating high-velocity oscillated transducer |
| 03/31/1981 | CA1098451A1 One-piece dual density acoustical panel |
| 03/25/1981 | EP0025632A1 Method of creating acoustic barriers |
| 03/24/1981 | US4257998 For jet engine; heat curing |
| 03/24/1981 | US4257272 Ultrasonic apparatus |
| 03/24/1981 | US4257271 Selectable delay system |
| 03/18/1981 | EP0025215A2 Contact for an ultrasonic transducer |
| 03/17/1981 | US4256198 Urethane foam absorber |
| 03/10/1981 | US4255083 Method and device for reducing the noise of turbo-machines |
| 03/10/1981 | US4254662 Multiple acoustic beamformer step scanner |
| 03/10/1981 | CA1097226A1 Sound deadening in ultrasonic heel attacher |
| 03/09/1981 | EP0018997A4 Improved acoustical panel. |
| 03/05/1981 | WO1981000638A1 A method of reducing the adaption time in the cancellation of repetitive vibration |
| 03/03/1981 | US4254417 Beamformer for arrays with rotational symmetry |
| 03/03/1981 | US4254388 Frequency selector apparatus |
| 03/03/1981 | US4254171 Method of manufacture of honeycomb noise attenuation structure and the resulting structure produced thereby |
| 03/03/1981 | US4253543 Device for absorption of airborne sound |
| 03/03/1981 | US4253338 Ultrasonic diagnostic equipment |
| 02/24/1981 | US4253168 CCD Signal processor |
| 02/24/1981 | US4252125 Ultrasonic diagnosing apparatus |
| 02/24/1981 | US4252026 Multiple line of sight ultrasonic apparatus |
| 02/24/1981 | US4252024 Flaw detection, characterization and study |
| 02/18/1981 | EP0024044A2 Sound absorber, in particular for anechoic chambers |
| 02/17/1981 | US4251807 Miniature buzzer |
| 02/11/1981 | EP0023867A1 Air-dropped buoy |
| 02/03/1981 | US4248090 Apparatus for ultrasonically imaging a body |
| 01/28/1981 | EP0022966A2 Ultrasonic diagnosis apparatus |
| 01/28/1981 | EP0022867A1 Metal-containing synthetic resin molding material |
| 01/27/1981 | US4247900 Signal combiner with permuted addressing |
| 01/27/1981 | US4247835 Surface acoustic wave devices |