| Patents for H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (5,050) |
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| 02/04/1997 | US5598625 Method for assembly of radial magnet voice coil actuators |
| 01/30/1997 | WO1997003537A1 Improved surround for a loudspeaker |
| 01/15/1997 | EP0753238A1 Method of manufacturing a loudspeaker spider |
| 01/02/1997 | DE19523974A1 Prodn. of acoustic function layer of transformer |
| 12/31/1996 | US5590212 High molecular weight polyethylene terephthalate |
| 12/31/1996 | US5590210 Loudspeaker structure and method of assembling loudspeaker |
| 12/25/1996 | CN1138816A Structural component of speaker, speaker and its mfg. method |
| 12/10/1996 | US5583945 Speaker with a molded plastic frame including a positioning projection, and a method for manufacturing the same |
| 12/03/1996 | US5581623 Electroacoustic transducer and method of fabricating the same |
| 12/03/1996 | US5581053 Diaphragm of electroacoustic transducer and method of manufacturing the same |
| 11/26/1996 | US5578800 Member for loudspeaker |
| 11/05/1996 | US5571891 Aromatic copolyamides, production thereof, formed structures and production thereof |
| 10/30/1996 | EP0739656A2 Ultrasonic transducer array and manufacturing method thereof |
| 10/09/1996 | CN1132994A Manufacturing method of electromagnetic sound converter and electronic device using the converter |
| 10/02/1996 | CN1132461A Loudspeaker vibrating diaphragm and methods for its production |
| 09/17/1996 | US5556464 Vibration plate of a speaker and method for producing same |
| 08/28/1996 | EP0729289A2 Speaker damper and production method thereof |
| 08/21/1996 | EP0540622B1 Method for preparing membranes for acoustic applications in particular for loudspeakers, and membranes obtained by such method |
| 08/07/1996 | EP0724820A1 Device and method for assembly of radial magnet voice coil actuators |
| 07/17/1996 | EP0629333B1 Electret microphone assembly, and method of manufacture |
| 07/03/1996 | EP0720415A2 Speaker component, speaker, and its manufacturing method |
| 05/28/1996 | US5521886 Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 05/01/1996 | CN2226360Y Emulsion vibration diaphragm |
| 05/01/1996 | CN1121678A Loudspeaker |
| 05/01/1996 | CN1031740C Method for preparing diamond-like composite vibrating membrane |
| 04/17/1996 | CN1120793A Method of fabricating an electroacoustic transducer |
| 04/10/1996 | EP0705527A1 Folded dielectric film element and method for manufacturing the same |
| 03/20/1996 | EP0591152B1 Anti-infection catheter arrangement |
| 03/06/1996 | CN1118129A Electracoustic transducer and method of fabricating the same |
| 02/28/1996 | CN2221277Y Cone quantitatively paper-picking device |
| 02/21/1996 | CN1117275A Ultrasonic transducer array and manufacturing method thereof |
| 01/31/1996 | CN2219002Y Pull down sound speaker magnetic steel float mould |
| 01/25/1996 | DE19504453C1 Prodn. of membrane for electro-acoustic converter |
| 01/24/1996 | EP0693862A2 Loudspeaker and process of manufacturing |
| 01/24/1996 | CN1115557A Attenuator used in laudspeaker and production of same |
| 01/24/1996 | CN1115556A Production of vibrating objects used in electric acoustic exchanger |
| 01/24/1996 | CN1115486A Electro-magnetic acoustic exchanger and method for winding coil of same |
| 12/20/1995 | EP0688144A2 Method of fabricating an electroacoustic transducer |
| 12/20/1995 | EP0687895A2 Method of Straining a diaphragm and a device therefor |
| 12/13/1995 | EP0687128A1 Voice oil and method for production thereof |
| 12/06/1995 | EP0685983A2 Magnetic circuit unit for loud-speaker and method of manufacturing the same |
| 12/05/1995 | US5473683 Post assembly process for adjusting the gain of an electret microphone within a communications apparatus |
| 12/05/1995 | US5473121 Acoustic vibration plate |
| 11/15/1995 | EP0681513A1 Manufacturing method of an mechanically focusing ultrasonic transducer array |
| 11/15/1995 | CN2212872Y Domed loudspeaker |
| 10/25/1995 | EP0678539A2 Aromatic copolyamides, process for their preparation, moulded articles and their manufacture |
| 10/17/1995 | US5458958 Comprised of acrylic synthetic fibers having long and narrow voids extending internally along the longitudinal axis |
| 10/12/1995 | DE4411757A1 Aromatic co:poly:amide(s) for wet-spinning to fibres, etc. |
| 10/05/1995 | WO1995026616A1 Method of manufacturing a loudspeaker spider |
| 10/04/1995 | EP0675668A1 A damper for a loudspeaker and a method for producing the same |
| 09/27/1995 | CN1108995A Method and apparatus for forming shaped products of film |
| 08/30/1995 | EP0669785A1 Electroacoustic transducer and method of winding coil therein |
| 08/30/1995 | EP0669784A2 Edge for loudspeaker |
| 08/30/1995 | EP0669783A1 Rotomolded speaker enclosure |
| 08/29/1995 | CA2143565A1 Rotomolded speaker enclosure |
| 08/02/1995 | CN1106185A Diaphragm of pneumatic loudspeaker and its manufacturing method |
| 07/19/1995 | CN1105500A Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 07/18/1995 | US5433705 Infection-preventing catheter arrangement |
| 07/11/1995 | US5432004 Vibration plate of a speaker and method for producing same |
| 06/21/1995 | CN2201763Y Speaker paper |
| 06/13/1995 | US5423220 Ultrasonic transducer array and manufacturing method thereof |
| 06/07/1995 | EP0656738A1 Method of manufacturing speakers and speakers made by the method |
| 05/31/1995 | CN1103229A Loudspeaker and manufacturing method |
| 05/17/1995 | EP0616751A4 Voice coil actuator. |
| 04/27/1995 | WO1995011579A1 Device and method for assembly of radial magnet voice coil actuators |
| 04/27/1995 | CA2172727A1 Device and method for assembly of radial magnet voice coil actuators |
| 04/26/1995 | EP0650308A1 Electroacoustic transducer and method of fabricating the same |
| 04/25/1995 | US5408731 Process for the manufacture of integrated capacitive transducers |
| 04/18/1995 | US5408534 Electret microphone assembly, and method of manufacturer |
| 04/12/1995 | EP0647386A1 Loudspeaker cone suspension rim having integral gasket |
| 03/29/1995 | CN1100884A Paper drum diaphragm and method for mfg. same |
| 03/29/1995 | CN1100883A Sound effect changeable diaphragm and the method for mfg. same |
| 03/09/1995 | DE4329637A1 Method for producing a contoured diaphragm for electroacoustic transducers such as headphones, and a transducer diaphragm produced in accordance with this method |
| 03/08/1995 | EP0641606A2 Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof |
| 02/01/1995 | EP0637190A2 Diaphragm for a capacitance type loudspeaker |
| 01/31/1995 | EP0647386A4 Loudspeaker cone suspension rim having integral gasket. |
| 01/18/1995 | EP0634227A2 Broadband ultrasonic transducers and related method of manufacture |
| 01/12/1995 | DE4321506A1 Loudspeaker diaphragm for a sound generator |
| 01/10/1995 | US5380960 Process for the preparation of films or diaphragms for acoustic applications |
| 01/05/1995 | WO1995001079A1 Folded dielectric film element and method for manufacturing the same |
| 01/04/1995 | EP0632676A1 Loudspeaker and manufacturing method |
| 01/04/1995 | EP0632675A1 Diaphragm-edge integral moldings for speakers, acoustic transducers comprising same and method for fabricating same |
| 01/04/1995 | EP0632674A1 Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 12/21/1994 | EP0629333A1 Electret microphone assembly, and method of manufacture. |
| 11/23/1994 | EP0305540B1 Diaphragm unit of a condenser microphone, a method of fabricating the same, and a condenser microphone |
| 11/17/1994 | EP0624452A1 Film molding method and apparatus |
| 11/15/1994 | US5364253 Magnetic circuit component molding device |
| 11/09/1994 | EP0624048A1 Structure for supporting a vibrating system of a loudspeaker |
| 11/02/1994 | EP0622971A1 Loudspeaker structure and method of assembling loudspeaker |
| 10/12/1994 | EP0619688A1 Speaker and its manufacturing method |
| 10/05/1994 | CN1093213A Method for producing diamond composite vibrating membrane |
| 09/28/1994 | EP0616751A1 Voice coil actuator |
| 08/30/1994 | US5343533 Transducer flux optimization |
| 08/24/1994 | EP0498793B1 Process for manufacturing an acoustic sensor with an essentially non-detachable protective layer, and acoustic sensor so obtained |
| 08/04/1994 | WO1994016826A1 Ultrasonic transducer array and manufacturing method thereof |
| 07/19/1994 | US5330695 Rubber and plastic |
| 07/19/1994 | US5329682 Method for the production of ultrasound transformers |
| 06/14/1994 | US5321762 Voice coil actuator |
| 06/07/1994 | US5319718 Loudspeaker cone and method for making same |
| 05/11/1994 | EP0596456A1 Method of manufacturing an integrated capacitive transductor |