| Patents for G10K 9 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers (3,562) |
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| 05/10/2000 | EP0999539A1 Controlling method and apparatus of constant-frequency sound-production of electrical horn |
| 05/09/2000 | US6061459 Surface-mounted electromagnetic sound generating body |
| 05/09/2000 | US6060818 SBAR structures and method of fabrication of SBAR.FBAR film processing techniques for the manufacturing of SBAR/BAR filters |
| 04/26/2000 | CN2376044Y Multi-functional electronic horn |
| 04/26/2000 | CN2376043Y Electric control air horn |
| 04/19/2000 | EP0993344A2 Ultrasonic transducer |
| 04/11/2000 | US6047603 Ultrasonic sensor |
| 03/28/2000 | US6041888 Low frequency flextensional acoustic source for underwater use |
| 03/28/2000 | CA2056586C Moment bender transducer drive |
| 03/01/2000 | CN2366938Y Miniature and energy saving type adjustable steam whistle |
| 02/23/2000 | CN1049746C Timepiece comprising electro-acoustic transducer |
| 02/09/2000 | EP0910848B1 Piezo-electric actuator-transducer for sound reproduction systems |
| 02/08/2000 | US6023519 Electroacoustic transducer |
| 02/02/2000 | EP0976117A1 Sounder |
| 02/02/2000 | CN2362175Y Electric control air horn |
| 01/27/2000 | WO2000004531A1 Sound generating reed |
| 01/26/2000 | CN1242925A Driver circuit, and method for operating same |
| 01/26/2000 | CN1242721A Electric-mechanical-acoustic transducer and method for mfg. same |
| 01/20/2000 | DE19830415A1 Impact hammer machine for boring holes in ground with electrically energized piezoelectric transducer |
| 01/12/2000 | EP0970758A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same |
| 01/06/2000 | WO2000000299A1 Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion |
| 01/04/2000 | US6011856 Electroacoustic transducer and electronic equipment using the same |
| 12/29/1999 | EP0967591A2 Transducer assembly |
| 12/28/1999 | US6008732 Motor vehicle display apparatus |
| 12/28/1999 | US6008720 Portable timer alarm device with ear attachment |
| 12/22/1999 | CN1239394A Piezoelectric acoustic component |
| 12/22/1999 | CN1047681C Piezoelectric buzzer |
| 12/21/1999 | US6005478 Siren unit |
| 12/16/1999 | DE19922148A1 Surface mounting piezoelectric acoustic component for alarm or receiver in electronic device |
| 12/15/1999 | EP0880761B1 Alarm tag |
| 12/14/1999 | US6002323 Audible feedback apparatus for indicating operation and position of a movable element |
| 12/09/1999 | WO1999063604A1 Resonant piezoelectric alerting device |
| 12/08/1999 | EP0963040A2 Acoustic resonator and method for making the same |
| 12/01/1999 | CN2351800Y Portable electronic sounding device for baby urinating |
| 11/30/1999 | US5994854 Acoustic resonator power delivery |
| 11/24/1999 | CN2350837Y Sound-producing device |
| 11/17/1999 | EP0957659A1 Piezoelectric electroacoustic transducer |
| 11/16/1999 | US5987105 Appliance communication system |
| 11/09/1999 | US5982708 Acoustic sensor and array thereof |
| 10/26/1999 | US5974157 Small electroacoustic transducer |
| 10/20/1999 | EP0950342A1 Driver circuit and method of operating the same |
| 10/20/1999 | EP0843873B1 Audible warning device with a built-in interference suppressing device |
| 10/20/1999 | EP0821822B1 Piezoelectric horn, particularly for vehicles |
| 10/19/1999 | US5969614 Alarm tag |
| 10/13/1999 | CN1231468A Surface assembling tpe electromagnetic sound-producing device |
| 10/13/1999 | CN1231467A Electro-acoustic transducer |
| 10/12/1999 | US5964054 For use with an archery bow to attract game animals |
| 10/05/1999 | USRE36327 Electroacoustic transducer and method of fabricating the same |
| 09/28/1999 | US5960096 Electroacoustic transducer |
| 09/28/1999 | US5959939 Electrodynamic driving means for acoustic emitters |
| 09/21/1999 | US5956293 Flexural plate sound transducer having low resonant frequency |
| 09/21/1999 | US5955824 Reduced size electro-acoustic transducer with improved terminal |
| 09/21/1999 | US5955821 Piezoelectric electro-acoustic transducer |
| 09/21/1999 | CA2007096C Shock-resistant flextensional transducer |
| 09/15/1999 | CN2338851Y Sound producing mechanism for theft-proof alarming device |
| 09/15/1999 | CN2338850Y Multi-sound channel and environmental protection vehicle hooter |
| 09/14/1999 | US5953437 Electroacoustic transducer |
| 09/14/1999 | US5953436 Apparatus for generating an audible tone |
| 09/10/1999 | WO1999045743A1 Radio telecommunication terminal |
| 09/10/1999 | CA2288942A1 Radio telecommunication terminal |
| 09/08/1999 | EP0941013A1 Radio telecommunication terminal |
| 09/08/1999 | CN2337645Y Contactorless electric horn sounding controller for vehicle |
| 09/01/1999 | CN2336451Y Sound source type automotive moving-coil horn circuit |
| 09/01/1999 | CN2336450Y Horn for motor vehicle |
| 08/25/1999 | CN2335232Y Energy-storage high-loudness electronic loudspeaker |
| 08/25/1999 | CN2335231Y Contactless electric loudspeaker device |
| 08/24/1999 | US5942858 Apparatus for supplying direct current pulses to an electrical load for improved efficiences |
| 08/24/1999 | US5941838 Shock wave source based on the electromagnetic principle |
| 08/19/1999 | WO1999041930A1 Communication buzzer |
| 08/18/1999 | CN1226052A Improved drive circuit of piezoelectric buzzing piece |
| 08/12/1999 | WO1999039843A1 Electromagnetic actuator and structure for mounting the same |
| 08/04/1999 | CN2332032Y Buzzer |
| 07/27/1999 | US5929751 Rear mounted vehicular horn |
| 07/21/1999 | EP0930607A2 Ultrasonic sensor |
| 07/21/1999 | CN2330043Y Electric horn for vehicle |
| 07/20/1999 | US5926439 Flextensional dual-section push-pull underwater projector |
| 07/15/1999 | WO1999034935A1 A vibrating aggregate |
| 07/07/1999 | EP0927987A2 Sound transducer system |
| 06/30/1999 | CN2327044Y Magnetic-conductive rear-piece choke for loudspeaker |
| 06/30/1999 | CN2327043Y Contact-less loudspeaker |
| 06/24/1999 | DE19756462A1 Ultrasound transducer used as part of an electronic circuit |
| 06/23/1999 | CN1220755A Protective cover assembly having sound transmission characteristics |
| 06/17/1999 | WO1999030313A1 Ultrasonic transducer with a cup-shaped support |
| 06/16/1999 | EP0921864A1 Flexural plate sound transducer having low resonant frequency |
| 06/16/1999 | CN2324614Y Electric circuit board and framework component of horn for vehicle |
| 06/16/1999 | CN2324613Y Diaphragm type circuit horn of vehicle |
| 06/10/1999 | WO1999018563A3 Ultrasonic transducer |
| 06/08/1999 | US5910648 Sound generator |
| 06/03/1999 | WO1999027636A1 Acoustic resonator power delivery |
| 06/03/1999 | CA2311637A1 Acoustic resonator power delivery |
| 05/26/1999 | CN2321091Y 电子哨子 Electronic whistle |
| 05/26/1999 | CN2321090Y Double-sound screw electric vehicle horn |
| 05/19/1999 | CN2319891Y 蜂鸣器 Buzzer |
| 05/18/1999 | US5905437 Pager with low voltage alarm |
| 05/14/1999 | WO1999023804A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 05/14/1999 | WO1999022882A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same |
| 05/14/1999 | CA2308038A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 05/11/1999 | US5903076 Vibration actuator for pager |
| 04/29/1999 | WO1999020987A1 A resonator for the acoustic transmission of information and a system utilizing same |
| 04/29/1999 | DE19744229A1 Ultrasonic transducer |