| Patents for H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (5,050) |
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| 03/06/2002 | CN1339235A Resonant panel-form loudspeakers |
| 02/28/2002 | WO2002017677A2 Electrostatic electroacoustical transducer |
| 02/21/2002 | WO2002015636A2 Miniature broadband transducer |
| 02/21/2002 | DE10038780A1 Loudspeaker spherical cap used for producing high pitch has pairs of layers of approximately the same thickness |
| 02/19/2002 | US6347683 Loudspeaker and process for manufacturing a loudspeaker |
| 02/14/2002 | US20020018575 Panel-form loudspeakers |
| 02/14/2002 | US20020017423 Speaker and method of assembling the speaker |
| 02/13/2002 | EP1179283A2 Bending wave loudspeakers |
| 02/12/2002 | US6347149 Driver for a flat acoustic panel |
| 02/06/2002 | EP1178703A2 Speaker and method of assembling the speaker |
| 01/29/2002 | US6343136 Speaker apparatus and manufacturing method thereof |
| 01/10/2002 | US20020003890 Armature for a receiver |
| 01/02/2002 | EP1166598A1 Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer |
| 01/01/2002 | US6334504 Molded foam resin, process for forming the same and speaker diaphragm consisting of the same |
| 12/25/2001 | US6332508 Loudspeaker and method for producing the same |
| 12/25/2001 | US6332262 Method of fabricating a loudspeaker suspension device |
| 12/19/2001 | EP1164574A1 Electroacoustic transducer and method of manufacture thereof |
| 12/18/2001 | US6332029 Acoustic device |
| 12/13/2001 | DE10028319A1 Electromechanical transducer has piezoelectric elements in stack with intermediate contact electrodes in form of flat connecting vanes fed out of flexible circuit board |
| 12/05/2001 | CN1325259A Method for producing capacitor-type acoustical pick-up |
| 11/29/2001 | US20010045321 Speaker |
| 11/28/2001 | EP1158833A2 Method for manufacturing condenser microphone |
| 11/28/2001 | EP1158832A1 Cloth for loudspeaker diaphragm, loudspeaker diaphragm, and loudspeaker |
| 11/28/2001 | CN1075704C Attenuator used in laudspeaker and prodn. of same |
| 11/27/2001 | US6323049 Method for manufacturing condenser microphone |
| 11/27/2001 | US6321438 Method of applying a matching layer to a transducer |
| 11/22/2001 | US20010043713 Speaker apparatus and manufacturing method thereof |
| 11/22/2001 | US20010043029 Acoustic transducer and method of making the same |
| 11/22/2001 | US20010043028 Acoustic transducer and method of making the same |
| 11/22/2001 | US20010042291 Method of working piezoelectric substance and method of manufacturing composite piezoelectric substance |
| 11/20/2001 | US6320239 Surface micromachined ultrasonic transducer |
| 11/15/2001 | WO2001087008A2 Armature for a receiver |
| 11/15/2001 | US20010041225 Using stencil |
| 11/08/2001 | US20010037555 Method of processing magnetic head |
| 10/30/2001 | US6308398 Method of manufacturing a wafer fabricated electroacoustic transducer |
| 10/25/2001 | US20010033670 Thin film electret microphone |
| 10/24/2001 | EP1148760A2 Electroacoustic transducer |
| 10/24/2001 | EP1147681A1 Resonant panel-form loudspeakers |
| 10/24/2001 | CN1318964A Loudspeaker and its mfg. |
| 10/24/2001 | CN1318963A Electroacoustic transducer |
| 10/23/2001 | CA2087395C Loudspeakers |
| 10/17/2001 | EP1146773A2 Electromagnetic sound generator |
| 10/17/2001 | EP1146770A2 Loudspeaker and method for the preperation thereof |
| 10/17/2001 | CN1317782A Electromagnetic sounder |
| 10/11/2001 | US20010028303 Electromagnetic sound generator |
| 10/11/2001 | DE10111502A1 Manufacturing method for piezoelectric devices, involves providing several active piezoelectric layers or laminations to form laminated structure using glue or adhesive |
| 10/10/2001 | EP1143767A2 Speaker |
| 10/10/2001 | CN1316868A Loudspeaker |
| 10/10/2001 | CN1316725A Electroacoustic transducer and making method thereof |
| 09/26/2001 | CN1071986C Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 09/26/2001 | CN1071920C Electro-magnetic acoustic exchanger and method for winding coil of same |
| 09/20/2001 | WO2001068273A1 Unidirectional acoustic probe and method for making same |
| 09/20/2001 | US20010022846 Speaker parts and method of fabricating the speaker parts |
| 09/20/2001 | US20010022250 Loudspeaker and process for manufacturing a loudspeaker |
| 09/19/2001 | EP1135003A2 Speaker parts and method of fabricating the speaker parts |
| 09/11/2001 | US6289106 Cap and center pole apparatus and method of coupling |
| 09/06/2001 | US20010019616 Self-locking mold cure system |
| 08/30/2001 | US20010017930 Speaker and its production method of the same |
| 08/30/2001 | US20010017929 Cap and center pole apparatus and method of coupling |
| 08/29/2001 | CN1310665A Method of and arrangement for manufacturing a plastic diaphragm for an electroacoustic transducer |
| 08/23/2001 | US20010015106 Micromechanical sensor and method for its production |
| 08/22/2001 | CN2444375Y Assembling tool for magnet of voice coil exciter |
| 08/22/2001 | CN2444374Y Aseembling device for pole shoe of voice coil exciter |
| 08/22/2001 | CN2444373Y Assembling tool for pole shoe of voice coil exciter |
| 08/15/2001 | CN1308832A A method of manufacturing a transducer having a diaphragm with a predetermined tension |
| 08/15/2001 | CN1308830A Loudspeaker drive unit having a resonant panel-form member |
| 08/07/2001 | US6272228 Method for making a sound transducer integrated into an acoustic signal generating card |
| 08/07/2001 | US6271620 Acoustic transducer and method of making the same |
| 08/02/2001 | US20010010611 Thin-film magnetic head capable of narrowing track width and method of manufacturing the same |
| 08/01/2001 | EP1120995A2 Electroacoustic transducer and method of manufacturing the same |
| 07/31/2001 | US6269167 Loudspeaker spider, method of making it and loudspeaker incorporating it |
| 07/26/2001 | US20010009586 Electroacoustic transducer and method of manufacturing the same |
| 07/25/2001 | CN1305300A Sound producing apparatus such as telephone |
| 07/05/2001 | US20010006488 Electroacoustic transducer and method for manufacturing the same |
| 07/04/2001 | CN1302171A Electro-acoustic transducer and its producing method |
| 06/28/2001 | WO2001046943A1 Electroacoustic transducer and method of manufacture thereof |
| 06/28/2001 | US20010005032 Method for producing a filled recess in a material layer, and an integrated circuit configuration produced by the method |
| 06/27/2001 | EP1111959A2 Electroacoustic transducer and method for manufacturing the same |
| 06/21/2001 | WO2001045461A1 Cloth for loudspeaker diaphragm, loudspeaker diaphragm, and loudspeaker |
| 06/20/2001 | CN2435894Y Sounding device |
| 06/19/2001 | US6248400 Vapor phase diamond synthesis method |
| 06/14/2001 | WO2001042742A1 Integrated sound transmitter and receiver, and corresponding method for making same |
| 06/13/2001 | EP1105344A1 Micromechanical sensor and corresponding production method |
| 06/13/2001 | CN1299152A Electro-acoustic transducer and its mfg. method, and electro-acoustic transducing using same |
| 06/07/2001 | WO2001041501A1 Diaphragm of piezoelectric sound generator, and method of manufacture thereof |
| 06/05/2001 | US6243474 Thin film electret microphone |
| 06/05/2001 | US6243473 Laptop computer with loudspeaker(s) |
| 05/23/2001 | EP1101389A2 Method for producing a filled recess in a material layer, integrated circuit produced using said method |
| 05/23/2001 | EP1101388A1 Louspeaker drive unit having a resonant panel-form member |
| 05/23/2001 | DE10057087A1 Acoustic oscillatory plate producing method e.g. for use in loudspeaker involves heat processing titanium oscillatory plate during ceramic formation to change titanium oscillatory plate into titanium oxide |
| 05/23/2001 | CN1296721A Speaker edge |
| 05/16/2001 | EP1100289A2 Electroacoustic transducer, process of producing the same and electroacoustic transducing device using the same |
| 05/16/2001 | EP1098719A1 Method of manufacturing a capacitive ultrasound transducer |
| 05/10/2001 | WO2001005189A3 Bending wave panel speaker and method of driving such a speaker |
| 05/09/2001 | EP1098549A2 Electroacoustic transducer |
| 05/03/2001 | WO2000072631A3 Electrostatic ultrasonic transducer and method of making the same |
| 05/01/2001 | US6224801 Making a speaker with dies and cavities, receivers of thermoplastic elastomers for outer flanges |
| 04/26/2001 | WO2001028760A1 Method of manufacturing a composite panel and composite panel obtained thereby |
| 04/26/2001 | DE19946467A1 Electroacoustic converter has piezo converter elements mounted at a distance apart and connected via sound transfer medium with opposed membrane surface normals |
| 04/25/2001 | EP1094684A2 Sound producing device for an electronic instrument such as a telephone |