Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 13 - Transmission systems characterised by the medium used for transmission, not provided for in groups
Patents for H04B 13 - Transmission systems characterised by the medium used for transmission, not provided for in groups (1,959)
11/2003
11/19/2003EP1363182A1 Information input device
11/19/2003CN1457567A Signal transmission device and method
11/19/2003CN1457456A 信息输入装置 Information input means
11/11/2003US6646250 Method and system for information transfer and replication between spatially distinct points via engineered quantum states
11/05/2003EP1358779A2 Acoustic source array system module for underwater operation which can be installed on a motorized boat
11/05/2003EP1358720A2 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
10/2003
10/23/2003WO2003088511A1 Multimodulation transmitter
10/23/2003WO2002061958A8 Acoustic array for installation on a boat
10/23/2003US20030196814 Fuel cell for downhole and subsea power systems
10/15/2003CN1449135A Dielectric transferring communication system and method
10/14/2003US6633236 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
10/02/2003US20030186655 System and method for communication via medium
10/01/2003EP1348267A1 Subsea communication
10/01/2003EP1348139A1 Subsea navigation and survey
10/01/2003CN1122954C Method and device for transmitting control and/or sensor signals
09/2003
09/30/2003US6628724 Process and system for information transfer
09/04/2003WO2001067628A3 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
09/04/2003US20030164240 Controllable gas-lift well and valve
07/2003
07/16/2003CN1430349A Signal treatment method of underwater sound coherent communication system with high code speed and low error probability
07/10/2003WO2003056727A1 Water acoustic coherently communication system and signal processing method having high code rate, low probability of error
07/10/2003CA2471708A1 Coherent water acoustic communication system and signal processing method with a high processing rate and low error probability
06/2003
06/26/2003US20030116321 Long duration fuel cell system
06/17/2003US6580356 Advanced personal identification systems and techniques
06/10/2003US6575248 Fuel cell for downhole and subsea power systems
06/04/2003CN1110910C System and method for near-field human-body coupling of encrypted communication with identification cards
05/2003
05/15/2003US20030092973 Method and apparatus for communication between inside and outside of transmission medium using transmission medium as communication line
05/08/2003US20030085771 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
05/07/2003EP1005723B1 Underwater communication apparatus and communication network
04/2003
04/29/2003US6556144 Method and apparatus for data communication with an underground instrument package
04/02/2003EP1298822A2 Transceiver suitable for data communication between wearable computers
04/02/2003EP1062753B1 Borehole transmission system using impedance modulation
03/2003
03/27/2003US20030060162 Transceiver suitable for data communications between wearable computers
03/26/2003CN1406311A Choke inductor for wireless communication and control in a well
03/11/2003US6531871 Extension assembly for an electromagnetic antenna and method of connection
02/2003
02/27/2003WO2003017538A1 Fiber optic sensor signal amplifier
02/27/2003WO2002082696A3 Communication system for underwater use
02/27/2003WO2002082695A3 Underwater communication system
02/20/2003WO2002061958A3 Acoustic array for installation on a boat
02/20/2003US20030035205 Fiber optic sensor signal amplifier
02/18/2003US6522301 Above deck unit for automatic identification system
02/06/2003US20030025588 Method for enabling authenticated access of an individual to a security area and security system for implementing the method
01/2003
01/14/2003CA2275828C Using discrete message-oriented services to deliver short audio communications
01/08/2003EP1274187A1 Signal transmission device and method
01/08/2003EP1274038A1 Method and system for enabling authenticated access of an individual to a security area
12/2002
12/24/2002US6498568 Pipeline communication system
12/19/2002WO2002102102A1 Network and methof for connecting antennas to base stations in a wireless communication network using space diversity
12/19/2002US20020191565 Methods and systems employing receive diversity in distributed cellular antenna applications
12/19/2002US20020190689 Power supply apparatus and electronic equipment
12/12/2002US20020187809 Method and apparatus for multiplexing in a wireless communication infrastructure
12/12/2002US20020186674 Method and apparatus for multiplexing in a wireless communication infrastructure
12/12/2002US20020186436 Method and apparatus for multiplexing in a wireless communication infrastructure
12/04/2002EP1263114A2 Power supply apparatus and electronic equipment
11/2002
11/28/2002US20020176323 Underwater alert system
11/13/2002CN2520614Y Low frequency radio voice teaching apparatus
11/07/2002WO2002046859A3 Capacitively coupled e-field communications system
10/2002
10/31/2002US20020158187 Method and system for information transfer and replication between spatially distinct points via engineered quantum states
10/30/2002EP1252416A1 Choke inductor for wireless communication and control in a well
10/24/2002US20020154572 Subsea communication system and technique
10/22/2002US6469635 Bore hole transmission system using impedance modulation
10/17/2002WO2002082696A2 Communication system for underwater use
10/17/2002WO2002082695A2 Underwater communication system
10/17/2002WO2002082692A1 Method and equipment for guided transmission of information through fluid media and/or plasma using electromagnetic radiation
10/15/2002US6463950 Method and device for the transmission of control and/or sensor signals
10/03/2002WO2002078220A1 Data transmission method in an acoustic and/or microwave radio system
09/2002
09/12/2002US20020128030 Group creation for wireless communication terminal
09/12/2002US20020126021 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
09/11/2002EP1239420A1 Identification system and code transmitter for the access control to an object or the use of an object, especially for a vehicle
09/06/2002WO2002069530A1 Signal transmission device and method
09/03/2002US6445307 Drill string telemetry
08/2002
08/29/2002WO2002067104A1 Information input device
08/29/2002DE10140571A1 Fluides Sende- und Empfangssystem für longitudinale elektromagnetische Wellen Fluid transmission and reception system for longitudinal electromagnetic waves
08/27/2002US6441721 Data transmission apparatus and data reception apparatus
08/27/2002US6441695 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
08/27/2002US6441358 Method and system for information transfer and replication between spatially distinct points via engineered quantum states
08/21/2002EP0824799B1 System for non-contact sensing and signalling using human body as signal transmission medium
08/21/2002CN1365552A Method and apparatus for data communication with an underground instrument package
08/20/2002US6437890 Laser communications link
08/14/2002CN1364003A Medium for modulated signals transmission
08/08/2002WO2002061958A2 Acoustic array for installation on a boat
07/2002
07/24/2002EP1224710A1 Electromagnetic antenna extension assembly and method
07/23/2002CA2181052C Method and apparatus for underwater communication
07/11/2002WO2002054635A1 Subsea communication
07/11/2002WO2002054110A1 Subsea navigation and survey
07/09/2002CA2220294C System for non-contact sensing and signalling using human body as signal transmission medium
07/03/2002EP1220501A2 Group creation for wireless communication terminals
06/2002
06/25/2002US6411566 System and method for processing an underwater acoustic signal by identifying nonlinearity in the underwater acoustic signal
06/25/2002US6411565 Multi-use torpedo dispensed single mode optical fiber
06/13/2002WO2002046859A2 Capacitively coupled e-field communications system
05/2002
05/02/2002US20020050952 Above deck unit for automatic identification system
05/02/2002EP1202388A2 Above deck unit for automatic identification system
04/2002
04/18/2002US20020043369 Petroleum well having downhole sensors, communication and power
04/04/2002DE10044322A1 Wireless VHF or UHF transmission of signals from transmitter to receiver antenna e.g. between submarines or ships by transmitting through medium of water
03/2002
03/28/2002US20020036085 Toroidal choke inductor for wireless communication and control
03/14/2002US20020030585 Data transmission system using a human body as a signal transmission path
03/13/2002EP1187375A1 Data transmission system using a human body as a signal transmission path
02/2002
02/19/2002CA2119986C Measuring-while-drilling telemetry apparatus and method
02/13/2002CN1335973A Method and device for transmitting control and/or sensor signals
01/2002
01/31/2002US20020011335 Fuel cell for downhole and subsea power systems
01/24/2002US20020009972 Bioacoustic control system, method and apparatus
01/03/2002US20020000316 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system
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