| Patents for H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (5,050) |
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| 04/25/2001 | EP1093703A1 A method of manufacturing a transducer having a diaphragm with a predetermined tension |
| 04/05/2001 | WO2000070910A3 Bending wave panel loudspeakers |
| 04/04/2001 | EP1088316A1 Thin electret layer and corresponding production method |
| 03/29/2001 | WO2001022776A1 Method of forming parylene-diaphragm piezoelectric acoustic transducers |
| 03/28/2001 | CN1289221A Very thin loudspeaker and its manufacture |
| 03/21/2001 | EP1084022A1 Method of and arrangement for manufacturing a plastic diaphragm for an electroacoustic transducer |
| 03/15/2001 | WO2001019137A1 Method and assembly for manufacturing acoustic transducers |
| 02/21/2001 | EP1077585A1 Speaker edge |
| 02/21/2001 | EP1077014A1 Driver for a flat acoustic panel |
| 02/15/2001 | WO2000070908A3 Bending wave loudspeakers |
| 02/14/2001 | EP1075688A1 Method of applying a matching layer to a transducer |
| 02/14/2001 | CN1283950A Technology for making magnetically conductive iron core of loudspeake |
| 02/13/2001 | US6185809 Method of manufacturing a diaphragm for an electroacoustic transducer |
| 02/06/2001 | US6183674 Manufacturing method of diaphragm for use in electroacoustic transducers |
| 01/18/2001 | WO2001005189A2 Bending wave panel speaker and method of driving such a speaker |
| 01/09/2001 | US6171534 Method of making a speaker cone and surround assembly |
| 01/04/2001 | WO2000069214A3 Vibration exciter |
| 12/28/2000 | WO2000059262A3 Cap and center pole apparatus and method of coupling |
| 12/21/2000 | DE19925787C1 Verfahren zur Herstellung von Membranen für elektroakustische Wandler sowie Membranen Process for the preparation of membranes for electroacoustic transducers, as well as membranes |
| 12/14/2000 | WO2000076269A1 Method for producing membranes for electroacoustic transducers and membranes obtained by this method |
| 11/30/2000 | WO2000072631A2 Electrostatic ultrasonic transducer and method of making the same |
| 11/28/2000 | US6154556 Dome speaker |
| 11/23/2000 | WO2000070910A2 Bending wave panel loudspeakers |
| 11/23/2000 | WO2000070908A2 Bending wave loudspeakers |
| 11/16/2000 | WO2000069214A2 Vibration exciter |
| 11/14/2000 | US6145186 Wafer fabricated electroacoustic transducer |
| 11/08/2000 | CN1273015A Method of producing speaker diaphragm and speaker diaphragm formed by this method and speaker using this |
| 10/18/2000 | EP1044329A1 Pump actuated by an electrodynamic transducer and method for making such a pump |
| 10/12/2000 | WO2000060902A1 Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer |
| 10/10/2000 | US6130955 Voice coil assembly |
| 10/05/2000 | WO2000059262A2 Cap and center pole apparatus and method of coupling |
| 10/05/2000 | WO2000058073A1 Method of and arrangement for manufacturing a plastic diaphragm for an electroacoustic transducer |
| 09/27/2000 | CN1267679A Moulding compound Foamex. its forming method and loudspeaker diaphragm constituted therewith |
| 09/27/2000 | CN1056799C Forming method of shaped products of film and apparatus therefor |
| 09/20/2000 | EP0860095B1 Method for making a sound transducer integrated into an acoustic signal generating card |
| 09/14/2000 | WO2000054555A1 Speaker edge |
| 09/07/2000 | DE10010491A1 Injected foamed resin structure forming loudspeaker cone especially, comprises foam sandwiched by thin, non-foamed resin layers, with further single, unfoamed layer, produced in single machine and operation |
| 09/06/2000 | CN1265816A Cap and central pole device and their connection method |
| 08/30/2000 | EP1032244A2 Electroacoustic transducer |
| 08/30/2000 | CN2394396Y Ferromagnetic core for speaker |
| 08/30/2000 | CN1265001A Electrosonic energy transducer |
| 08/29/2000 | US6111971 Electroacoustic transducer |
| 08/09/2000 | EP1026919A2 Loudspeaker with connection without soldering |
| 08/09/2000 | CN1262592A Miniature loudspeaker and its manufacturing method |
| 08/03/2000 | WO2000045616A1 Resonant panel-form loudspeakers |
| 08/03/2000 | CA2360955A1 Resonant panel-form loudspeakers |
| 08/01/2000 | US6097828 Electroacoustic transducer |
| 08/01/2000 | US6096166 Speaker cover assembly apparatus |
| 07/19/2000 | CN2388791Y Voice coil positioning gage |
| 07/04/2000 | CA2232845C Voice coil actuator ii |
| 06/29/2000 | DE19859702A1 Sandwich panel manufacture by joining facing layers to core immediately after core production |
| 06/28/2000 | EP1012547A1 Miniature silicon condenser microphone |
| 06/21/2000 | EP1009977A2 Wafer fabricated electroacoustic transducer |
| 06/21/2000 | CN1257638A Loudspeaker suspension device and fabricating met thereof |
| 06/07/2000 | CN1255936A Synthetic chloroprene rubber adhesive compsn. and process for producing speaker by using same |
| 05/31/2000 | EP1005251A1 Method of producing speaker diaphragm and speaker diaphragm formed by this method and speaker using this |
| 05/04/2000 | DE19921210A1 Production of electroacoustic resonant panel of speaker, microphone, involves bonding cell edge and resonant panel housing to a die in predetermined gap |
| 05/03/2000 | EP0997056A1 Loudspeakers |
| 04/19/2000 | EP0705527B1 Folded dielectric film element and method for manufacturing the same |
| 03/28/2000 | US6041488 Semi-automated media rework process |
| 03/21/2000 | US6039146 Method of manufacturing speaker diaphragm |
| 03/21/2000 | US6039145 Diaphragm-edge integral moldings for speakers, acoustic transducers comprising same and method for fabricating same |
| 03/21/2000 | US6038752 Method for manufacturing an ultrasonic transducer incorporating an array of slotted transducer elements |
| 03/15/2000 | CN1247386A Pressure converter and its mfg. method |
| 03/01/2000 | EP0981823A1 Thin film electret microphone |
| 02/29/2000 | US6030561 Methods for making a loudspeaker vibrating diaphragm |
| 02/24/2000 | WO2000009440A1 Micromechanical sensor and corresponding production method |
| 02/24/2000 | WO2000003560A3 Method for producing a filled recess in a material layer, integrated circuit produced using said method |
| 02/10/2000 | WO2000007409A1 Loudspeaker drive unit having a resonant panel-form member |
| 02/10/2000 | CA2338713A1 Loudspeaker drive unit having a resonant panel-form member |
| 02/03/2000 | WO2000005001A1 Method of manufacturing a capacitive ultrasound transducer |
| 01/27/2000 | DE19831771A1 Kunststoffkapselung für akustischen Wandler Plastic enclosure for transducer |
| 01/26/2000 | CN1242721A Electric-mechanical-acoustic transducer and method for mfg. same |
| 01/20/2000 | WO2000003560A2 Method for producing a filled recess in a material layer, integrated circuit produced using said method |
| 01/19/2000 | EP0973355A2 Plastic encapsulation for an acoustic transducer |
| 01/18/2000 | USRE36512 Method of fabricating an electroacoustic transducer |
| 01/18/2000 | US6014898 Ultrasonic transducer array incorporating an array of slotted transducer elements |
| 01/12/2000 | EP0970758A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same |
| 01/11/2000 | US6012335 High sensitivity micro-machined pressure sensors and acoustic transducers |
| 01/05/2000 | EP0969694A2 Pressure transducer and manufacturing method thereof |
| 01/05/2000 | EP0969067A1 Synthetic chloroprene rubber adhesive composition and process for producing speaker by using the same |
| 12/30/1999 | DE19827793A1 Schwingspulenanordnung und Verfahren zu ihrer Herstellung Voice coil assembly and process for their preparation |
| 12/29/1999 | EP0967831A2 Mobil coil device and method for its implementation |
| 12/29/1999 | EP0966862A2 Loudspeaker and method for producing the same |
| 12/16/1999 | WO1999065277A1 A method of manufacturing a transducer having a diaphragm with a predetermined tension |
| 12/16/1999 | WO1999065272A1 Method of producing speaker diaphragm and speaker diaphragm formed by this method and speaker using this |
| 11/25/1999 | WO1999060820A1 Driver for a flat acoustic panel |
| 11/24/1999 | CN1236287A Capacitive speaker composed of plastic and conductive liquid and its producing method |
| 11/23/1999 | US5987992 Ultrasonic sensor with temperature compensation capacitor |
| 11/18/1999 | WO1999059172A1 Thin electret layer and corresponding production method |
| 11/18/1999 | DE19821860A1 Driver for flat panel loudspeaker |
| 11/11/1999 | WO1999057712A1 Method of applying a matching layer to a transducer |
| 11/11/1999 | CA2330657A1 Method of applying a matching layer to a transducer |
| 11/10/1999 | EP0847661B1 Acoustic device |
| 11/10/1999 | CN1234717A Method for manufacturing U-shaped yoke for Al-Ni-Co/neodium magnet with multistage cold forming machine |
| 10/27/1999 | CN1046058C 超声转换器阵列及其制造方法 Ultrasonic transducer array and manufacturing method thereof |
| 10/19/1999 | US5966797 Method of manufacturing a damper for a loudspeaker |
| 10/05/1999 | USRE36327 Electroacoustic transducer and method of fabricating the same |
| 10/05/1999 | US5961762 Method and assembly for manufacturing acoustic transducers |
| 09/22/1999 | EP0944292A2 Loadspeaker diaphram of an injection foam molded body |