| Patents for H04B 11 - Transmission systems employing ultrasonic, sonic or infrasonic waves (1,545) |
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| 03/28/2002 | WO2001099389A3 Omnidirectional ultrasonic communication system |
| 03/26/2002 | US6363139 Omnidirectional ultrasonic communication system |
| 03/21/2002 | WO2001057624A3 Physical presence digital authentication system (points/cash purchasing mechanism) |
| 03/13/2002 | EP1038254B1 Remote energy supply process and system for an electronic information carrier |
| 02/14/2002 | WO2001058174A3 Physical presence digital authentication system (smart e-wallet) |
| 02/14/2002 | DE10029893A1 Signal receiver for data communication system, evaluates watermark embedded in received signal to control signal transmission and other processes |
| 02/13/2002 | CN1335973A Method and device for transmitting control and/or sensor signals |
| 02/07/2002 | WO2002010793A1 Navigating acoustic device for skin diving |
| 02/07/2002 | WO2001057622A3 Physical presence digital authentication system (crypto service provider (csp)) |
| 02/06/2002 | EP1178328A1 Acoustic navigation device for unterwater diving |
| 01/29/2002 | US6343049 Ultrasonic transmitting and receiving system for digital communication |
| 01/24/2002 | WO2001061987A3 Remote control signaling using audio watermarks |
| 01/03/2002 | WO2001057623A3 Physical presence digital authentication system (webpage-dependent activation) |
| 01/02/2002 | EP1166248A1 Remote-control system for appliances |
| 01/02/2002 | CN1329782A Method for transmitting information and suitable system therefor |
| 12/27/2001 | WO2001099389A2 Omnidirectional ultrasonic communication system |
| 12/27/2001 | US20010055397 Parametric virtual speaker and surround-sound system |
| 12/27/2001 | US20010055352 Process and system for information transfer |
| 12/13/2001 | WO2001095066A2 Physical presence digital authentication system (device fabrication) |
| 12/04/2001 | US6327220 Sonar location monitor |
| 11/28/2001 | CN1324526A Method and device for developing a virtual speaker distant from the sound source |
| 11/13/2001 | US6317388 Thermoacoustic bi-static sonar system |
| 10/24/2001 | CN2456382Y Programmable pulse width modulated acoustic wave transmitter |
| 10/17/2001 | EP1145208A2 Method and device for transmitting control and/or sensor signals |
| 10/10/2001 | EP1029321B1 Display element, control for a display element, corresponding control method in addition to a register element and registering system |
| 09/27/2001 | WO2001071953A1 Installation with piezoelectric element for equipping a structure and piezoelectric element for same |
| 09/27/2001 | WO2001070568A1 Apparatus for deploying a load to an underwater target position with enhanced accuracy and a method to control such apparatus |
| 09/11/2001 | CA2097048C Multiple segment fiber optic hydrophone |
| 08/23/2001 | WO2001061987A2 Remote control signaling using audio watermarks |
| 08/09/2001 | WO2001058176A1 Physical presence digital authentication system (plug-ins) |
| 08/09/2001 | WO2001058175A2 Physical presence digital authentication system (broadcast media) |
| 08/09/2001 | WO2001058174A2 Physical presence digital authentication system (smart e-wallet) |
| 08/09/2001 | WO2001058080A1 Physical presence digital authentication system (transactions and authentication) |
| 08/09/2001 | WO2001057625A2 Physical presence digital authentication system (device-to-device) |
| 08/09/2001 | WO2001057624A2 Physical presence digital authentication system (points/cash purchasing mechanism) |
| 08/09/2001 | WO2001057623A2 Physical presence digital authentication system (webpage-dependent activation) |
| 08/09/2001 | WO2001057622A2 Physical presence digital authentication system (crypto service provider (csp)) |
| 08/09/2001 | WO2001057620A2 Physical presence digital authentication system (transmission and routine) |
| 08/09/2001 | WO2001057619A2 Physical presence digital authentication system |
| 08/08/2001 | EP1121768A1 Method and device for developing a virtual speaker distant from the sound source |
| 08/08/2001 | EP1121763A1 A method to use acoustic signals for computer communications |
| 08/08/2001 | CN1307764A Transmission of data by ultrasound |
| 08/07/2001 | US6272073 Underwater location and communication device |
| 08/02/2001 | WO2001018763A3 Method and device for transmitting control and/or sensor signals |
| 07/19/2001 | WO2001052437A1 Parametric audio system |
| 07/18/2001 | EP1116155A2 Card for interaction with a computer |
| 07/18/2001 | CN1304230A Voice-frequency signal preprocessing device of radio sound transmitting equipment |
| 07/18/2001 | CN1304229A Radio sound transmitting equipment |
| 07/18/2001 | CN1304228A Radio sound transmitting method |
| 07/18/2001 | CN1304227A 调制装置 Modulation device |
| 07/12/2001 | US20010007591 Parametric audio system |
| 07/11/2001 | CN1303227A Transmission/receiving device and transmission/receiving method |
| 07/11/2001 | CN1303186A Method and device for emitting ultrasonic signals from vehicle to pedestrian |
| 07/03/2001 | US6256588 Seismic sensor array with electrical to optical transformers |
| 06/28/2001 | US20010005176 Transmission of data by ultrasound |
| 06/27/2001 | EP1110339A1 Method and apparatus for coding an information signal using delay contour adjustment |
| 06/13/2001 | EP1105986A2 Method for transmitting information and suitable system therefor |
| 05/25/2001 | WO2001037294A1 Connection system for submarine acoustic antenna |
| 05/22/2001 | US6236142 Ultrasonic liquid gauging system |
| 05/08/2001 | US6229899 Method and device for developing a virtual speaker distant from the sound source |
| 05/01/2001 | US6226227 Manual scan imaging sonar |
| 04/18/2001 | EP1092291A1 Transmission of data by ultrasound |
| 04/10/2001 | US6215732 Expendable device for measurement of sound velocity profile |
| 04/10/2001 | US6215226 Ultrasonic liquid gauging system |
| 04/04/2001 | EP1075098A9 Electronic converter of an acoustic signal to a pseudo-digital signal and bidirectional communication method by acoustic waves |
| 03/22/2001 | DE19945212A1 Unit employed in low frequency transmission system to obtain time-coherence in processing of electroacoustic signals, comprises conductor structure forming dispersive delay line |
| 03/15/2001 | WO2001018763A2 Method and device for transmitting control and/or sensor signals |
| 03/15/2001 | DE19942508A1 Verfahren und Vorrichtung zur Übertragung von Steuer- und/oder Sensorsignalen Method and apparatus for transmission of control and / or sensor signals |
| 02/13/2001 | US6188645 Seismic sensor array with electrical-to optical transformers |
| 02/08/2001 | WO2001010065A1 Acoustic communication system |
| 02/08/2001 | WO2001010064A1 Sound communication system between a portable unit and a communication terminal |
| 02/08/2001 | WO2001009689A1 System for automatically setting a portable object with a clock function |
| 02/07/2001 | EP1075098A1 Electronic converter of an acoustic signal to a pseudo-digital signal and bidirectional communication method by acoustic waves |
| 02/01/2001 | DE19931386A1 Parametric broadcast signal reception for under-water radar and signal transmission, using secondary frequency amplifiers with consecutive blocking filters and amplifier elements |
| 01/30/2001 | US6181644 Diver mask underwater imaging system |
| 01/24/2001 | CN1281566A Remote energy supply structure and process for electric information carrier |
| 12/26/2000 | US6166996 Ultrasonic broadband frequency transducer pest repulsion system |
| 12/14/2000 | DE19927040A1 Information transmission method produces composite signal from reference and information components individually developing discrete states to assemble pattern of binary digits |
| 11/23/2000 | WO2000021020A8 Card for interaction with a computer |
| 11/22/2000 | CN2407516Y Audio signal precprocessing device for radio acoustic transmitter |
| 11/22/2000 | CN2407515Y Radio acoustic transmitter |
| 11/07/2000 | US6144367 Method and system for simultaneous operation of multiple handheld control devices in a data processing system |
| 10/17/2000 | US6133849 Control signal coding and detection in the audible and inaudible ranges |
| 10/11/2000 | EP1042653A1 Ultrasonic liquid gauging system |
| 10/05/2000 | WO2000058925A1 Remote-control system for appliances |
| 10/05/2000 | CA2368609A1 Remote-control system for appliances |
| 09/27/2000 | EP1038254A2 Remote energy supply process and system for an electronic information carrier |
| 09/26/2000 | US6125172 Apparatus and method for initiating a transaction having acoustic data receiver that filters human voice |
| 09/26/2000 | US6125080 Underwater communication apparatus and communication method |
| 09/20/2000 | EP1036441A1 Method and apparatus for carrying out high data rate underwater communication |
| 09/19/2000 | US6122312 Acoustic wave communication apparatus and method |
| 09/12/2000 | US6118732 Secure marine communication system |
| 09/05/2000 | US6113653 Method and apparatus for coding an information signal using delay contour adjustment |
| 08/23/2000 | EP1029321A2 Display element, control for a display element, corresponding control method in addition to a register element and registering system |
| 08/22/2000 | US6108427 Method and apparatus for eliminating audio feedback |
| 08/22/2000 | US6108272 Method and apparatus for locating diver(s) from a surface station and alerting the surface station of a diver emergency |
| 07/06/2000 | WO2000021020A3 Card for interaction with a computer |
| 06/22/2000 | WO2000011817A3 Method for transmitting information and suitable system therefor |
| 06/21/2000 | EP1010269A1 Signalling system |
| 06/07/2000 | EP1005723A1 Underwater communication apparatus and communication network |