| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 11/20/1986 | WO1986006918A1 Improvements in or relating to microphones |
| 11/12/1986 | EP0201421A1 Contact microphone pick-up with a piezo-polymeric membrane |
| 10/28/1986 | CA1213355A1 Annular array ultrasonic transducers |
| 10/21/1986 | US4617707 Alternating layers of ceramic and spacing layers; sintering |
| 10/15/1986 | CN85103008A Nonbarrierboard one-direction low-frequency wide-band high-pressure transducer |
| 10/08/1986 | EP0196652A2 A backing material for an ultrasonic transducer |
| 10/07/1986 | US4616152 Piezoelectric ultrasonic probe using an epoxy resin and iron carbonyl acoustic matching layer |
| 10/07/1986 | CA1212451A1 Ceramic microphone |
| 10/07/1986 | CA1212448A1 Selectable focus sphericone transducer, imaging apparatus and switching means |
| 09/12/1986 | WO1986005350A1 Ceramic body with ordered pores |
| 09/09/1986 | US4611141 Lead structure for a piezoelectric array-type ultrasonic probe |
| 09/03/1986 | EP0193048A2 Ultrasonic transducer |
| 09/02/1986 | CA1210842A1 Piezoelectric transducer with integral driver and sensor |
| 08/27/1986 | CN85100713A Circular cone piezoelectric earth-phone |
| 08/27/1986 | CN85100712A Wide band hydrophone with complex ceramic material and its manufacturing technology |
| 08/20/1986 | EP0054045B1 Receiver for a multi-element ultrasonic probe echograph |
| 08/19/1986 | US4607186 Ultrasonic transducer with a piezoelectric element |
| 08/19/1986 | US4607145 Electroacoustic transducer with a piezoelectric diaphragm |
| 08/13/1986 | CN85100483A Material for low and high frequency ultrasonic transducer |
| 08/06/1986 | EP0189520A1 Method of making an ultrasonic array antenna |
| 08/05/1986 | US4604542 Broadband radial vibrator transducer with multiple resonant frequencies |
| 07/31/1986 | WO1986004477A1 Electro-mechanical transducer |
| 07/30/1986 | EP0188609A1 Piezoelectric loudspeaker having a feedback transducer |
| 07/29/1986 | US4603276 Transducer comprising a network of piezoelectric elements |
| 07/23/1986 | EP0188017A1 Electroacoustic calling device |
| 07/16/1986 | EP0187668A2 Ultrasonic transducer and method of manufacturing same |
| 07/16/1986 | EP0115485B1 Electroacoustic transducer |
| 07/08/1986 | CA1207446A1 Method and apparatus for detecting problems in sucker- rod well pumps |
| 07/08/1986 | CA1207429A1 Electroacoustic transducer of the piezoelectric polymer type |
| 07/02/1986 | CA1207076A Multi-focus ultrasonic transducer |
| 06/24/1986 | US4597099 Piezoelectric transducer |
| 06/24/1986 | US4596903 Pickup device for picking up vibration transmitted through bones |
| 06/24/1986 | CA1206588A1 Piezoelectric apodized ultrasound transducers |
| 06/24/1986 | CA1206587A1 Ultrasonic examination device |
| 06/18/1986 | EP0184717A1 Transducer plate for piezoelectric transducers |
| 06/03/1986 | US4593160 Piezoelectric speaker |
| 05/28/1986 | EP0182140A1 Hybrid ultrasonic sensor with electronic circuitry |
| 05/21/1986 | EP0181506A2 Flexible piezoelectric transducer assembly |
| 05/13/1986 | US4588867 Ear microphone |
| 05/07/1986 | EP0180518A1 Electroacoustic transducer with piezoelectric diaphragm |
| 04/15/1986 | US4583018 Electrode configuration for piezoelectric probe |
| 03/25/1986 | US4578613 Diaphragm comprising at least one foil of a piezoelectric polymer material |
| 03/25/1986 | US4577500 Driving control method of ultrasonic transducer |
| 03/25/1986 | CA1202406A1 Underwater transducer with depth compensation |
| 03/19/1986 | EP0174897A2 Underwater piezoelectric arrangement |
| 03/19/1986 | EP0174837A2 Piezoelectric coaxial cable having a helical inner conductor |
| 03/18/1986 | US4576670 Method for making contact with the electrode on the adhesive-coated side of an electrical component and the article made by such method |
| 03/18/1986 | CA1202112A1 Ultrasonic transducer |
| 03/12/1986 | EP0173864A1 Porous matching layer in an ultrasonic applicator |
| 03/12/1986 | EP0173701A1 A circuit board assembly, a handset and a method of producing a circuit board assembly for a handset |
| 03/11/1986 | CA1201824A1 Method of manufacturing an apodized ultrasound transducer |
| 02/27/1986 | WO1986001362A1 Piezoelectric loudspeaker having a feedback transducer |
| 02/25/1986 | US4572981 Transducer comprising composite electrical materials |
| 02/25/1986 | US4571794 Method of accommodating electronic component in casing |
| 02/04/1986 | US4568851 Piezoelectric coaxial cable having a helical inner conductor |
| 01/29/1986 | EP0169727A2 Broadband radial vibrator transducer |
| 01/21/1986 | US4564980 Ultrasonic transducer system and manufacturing method |
| 01/21/1986 | CA1199719A1 Piezo-electric ultrasonic transducer with damped suspension |
| 01/14/1986 | CA1199396A1 Electroacoustic transducer |
| 01/02/1986 | EP0166180A1 Hydrophone |
| 01/01/1986 | CN85200255U Standard underwater sound projecting transducer in the 15-25khz range |
| 12/31/1985 | CA1198807A1 Acoustic transducer with honeycomb diaphragm |
| 12/27/1985 | EP0165886A2 Sheet-like piezoelectric element |
| 12/17/1985 | US4559418 Ceramic microphone |
| 12/10/1985 | US4558249 Stretched piezopolymer transducer with unsupported areas |
| 12/03/1985 | CA1197492A1 Method of fabrication of piezoelectric polymer transducers by forging |
| 11/27/1985 | EP0162618A2 Underwater acoustic wave transmitting and receiving unit |
| 11/27/1985 | EP0162515A1 Ultrasonic transducer devices using an array of piezoelectric transducer elements |
| 11/10/1985 | CN85200406U Transducer for measuring elasticity coupling with a suspended filament |
| 10/22/1985 | US4549107 Ultrasonic beam focusing device with a concave surface |
| 10/16/1985 | EP0158230A1 Piezoelectric-acoustic transducer for electroacoustic units with constructional features for assembling |
| 10/15/1985 | CA1195419A1 Transducer supporting and contacting means |
| 10/08/1985 | US4546459 Method and apparatus for a phased array transducer |
| 09/18/1985 | EP0154706A2 Piezoelectric air-ultrasound transducer with broadband characteristics |
| 09/10/1985 | CN85200308U A sensor for monitoring sound emission in high temperature |
| 08/15/1985 | WO1985003613A1 A circuit board assembly, a handset and a method of producing a circuit board assembly for a handset |
| 08/13/1985 | US4535205 Electroacoustic transducer of the piezoelectric polymer type |
| 08/13/1985 | US4534221 Ultrasonic diagnostic imaging systems for varying depths of field |
| 07/03/1985 | EP0146933A2 Sound generating apparatus |
| 06/25/1985 | US4525645 Cylindrical bender-type vibration transducer |
| 06/25/1985 | US4524693 Underwater transducer with depth compensation |
| 06/18/1985 | US4524295 Apparatus and method for generating mechanical waves |
| 05/28/1985 | US4520238 Pickup device for picking up vibration transmitted through bones |
| 05/22/1985 | EP0142318A2 Ultrasonic probe |
| 05/22/1985 | EP0142215A2 Ultrasound transducer with improved vibrational modes |
| 05/22/1985 | EP0142178A1 Ultrasonic transducer |
| 05/21/1985 | US4518889 Piezoelectric apodized ultrasound transducers |
| 05/21/1985 | US4518555 Manufacturing an active suspension electromechanical transducer |
| 05/08/1985 | EP0140363A2 Phased array transducer construction |
| 04/30/1985 | US4514621 Firing range |
| 04/30/1985 | US4514247 Laminated piezoelectric material and passive material |
| 04/17/1985 | EP0137529A2 Method for fabricating composite electrical transducers |
| 04/10/1985 | EP0136908A2 Process for producing array-type ultrasonic probe |
| 04/03/1985 | EP0135665A2 Transducer plate for a piezoelectric transducer, and apparatus for manufacturing the same |
| 04/02/1985 | US4509153 Resolution transducers, systems and methods for the transmission and/or reception of waves propagated by vibration |
| 04/02/1985 | US4508668 Compression, electrical polarization |
| 03/12/1985 | CA1183937A1 Piezoelectric transducer apparatus |
| 02/19/1985 | US4499902 Receiver device for a multi-element ultrasonic probe echograph and echograph equipped in this way |
| 01/29/1985 | US4496871 Parallel type piezoelectric bimorph vibrator |
| 01/22/1985 | US4494410 Convertor apparatus for accurate and consistent non-destructive testing of objects |