Patents
Patents for H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859)
11/2001
11/22/2001WO2001088931A1 Inductive translator composed of two spools with respective cores
11/21/2001CN1323106A Radio tourist guiding and explaining system for scenic spots
11/20/2001US6320508 Arrangement for an antenna resonant circuit for contactless transmission systems
11/20/2001US6320399 Measuring method for detecting a short-circuit between the turns of a coil integrated on a chip, and integrated circuit structure adapted to such a measuring method
11/20/2001US6320169 Method and apparatus for magnetic induction heating using radio frequency identification of object to be heated
11/20/2001US6319827 Integrated electronic micromodule and method for making same
11/15/2001WO2001086967A2 Radio frequency detection and identification system
11/15/2001WO2001086899A1 Device for carrying out wide-band electrical signal transmission with a mobile directional coupler
11/15/2001WO2001086853A2 System for communication on a computer unit
11/15/2001WO2001086832A1 Transmitter and receiver coil
11/15/2001US20010041531 Hub and probe system and method
11/15/2001US20010040507 Radio frequency detection and identification system
11/15/2001DE10021671A1 Broadband signal transmission device with bi-directional transmission path, includes units mutually movable along selectable trajectory
11/14/2001EP1154368A1 Reader having means for determining the number of electromagnetic transponders in the field of the reader
11/14/2001EP1153362A1 Contactless data transmission system and method for contactlessly transmitting data
11/14/2001EP1153317A2 Method of interrogating a radio frequency identification device
11/14/2001EP1153316A2 Method of detecting a radio frequency identification device
11/14/2001EP1153315A2 System for radio frequency identification
11/14/2001CN1322391A Multiple loop antenna
11/13/2001US6317045 Reproducing device
11/13/2001US6317027 Auto-tunning scanning proximity reader
11/08/2001WO2001084488A1 Data carrier having means for changing the resonant frequency of its resonant circuit
11/08/2001WO2001083948A1 Logging sondes for use in boreholes
11/08/2001US20010038280 Non-contact signal transmission apparatus
11/07/2001CN1321005A Non-contact signal transmission device
11/01/2001WO2001082254A1 Event driven information system
11/01/2001WO2001082222A1 Frequency sensor for each interface of a data carrier
11/01/2001WO2001041315A3 Arrangement for transmitting electrical signals and/or energy between parts that can be rotated in relation to each other
11/01/2001US20010035729 Method of connecting a mobile control and/or monitoring unit to a machine and a control and/or monitoring unit for same
11/01/2001CA2406735A1 Event driven information system
10/2001
10/31/2001EP1150314A2 Non-contact signal transmission apparatus
10/31/2001EP1149313A1 An article identification tag, and a method for the detection thereof
10/31/2001EP1149305A2 Radio frequency identification device
10/31/2001DE10026174A1 Kapazitiver Bus Capacitive bus
10/31/2001DE10026173A1 Arrangement for transferring electrical energy/signals has voltage-isolated primary circuit at each central unit connection point, external unit secondary circuits
10/31/2001CN2457798Y Radio communication device for indoor telephone set
10/31/2001CN1319966A Small amount payment system design scheme for electronic business of cellular mobile telecommunication network
10/31/2001CN1319953A Radio induction system
10/25/2001WO2001080444A1 Device for transferring electrical energy or signals
10/25/2001WO2001080443A1 Arrangement for contactless transmission of electric signals or energy between several mobile units
10/25/2001WO2001080442A2 Array for contactless transmission of electrical signals or energy
10/25/2001US20010033164 Focused through-casing resistivity measurement
10/24/2001EP1148406A2 Noncontact transmitting apparatus
10/24/2001EP1147603A2 Antenna system for radio frequency identification
10/24/2001CN1318936A Method of realizing wideband movable communication in fixed telecommunication network
10/18/2001DE10107208A1 Equipment and method for locating containers and contents of containers provided with HF labels determines both x and y coordinates for these
10/17/2001EP1145460A2 Device for transmitting signals in a vehicle
10/17/2001EP1145371A1 Carrier with antenna for radio frequency identification
10/17/2001EP1145203A1 Auto-tuning scanning proximity reader
10/17/2001EP1145183A1 Games apparatus
10/16/2001US6304613 Data carrier having rectifier and improved voltage limiter
10/16/2001US6304043 Circuit arrangement for signal coupling between circuit parts having supply lines isolated from one another
10/11/2001US20010029167 Nonconctact transmitting apparatus
10/11/2001US20010028691 Data carrier having means for synchronization with a received data stream
10/11/2001DE10016413A1 Transmitting and receiving system for signals on several frequency domains, for vehicle security system, comprises noise figure and ultra high-frequency circuits having suitable circuits working with common antenna
10/10/2001CN1072819C Method for far-end requiring portable data card and requiring device
10/09/2001US6300617 Magnetic digital signal coupler having selected/reversal directions of magnetization
10/04/2001US20010026186 Semiconductor integrated circuit device and contactless electronic device
10/04/2001EP1139280A2 Semiconductor integrated circuit device and contactless electronic device
10/04/2001EP1138129A1 A method for use in a teleloop system, a teleloop system and an amplifier for a teleloop system
10/04/2001EP1138128A1 Contactless electronic communication device with optional auxiliary power source
10/04/2001EP1138098A1 Multiple loop antenna
10/03/2001CN1316115A Electrical signal coupling device
10/02/2001US6298271 Medical system having improved telemetry
09/2001
09/26/2001CN1315056A Integrated electronic micromodule and method for making same
09/26/2001CN1315025A Non-contact IC medium and system using the same
09/20/2001DE10110776A1 Linking mobile operational and monitoring unit to e.g. robotic machine or manipulator employs data exchange in assignment or logging-on process
09/20/2001DE10012057A1 Identification/authentication data transfer method for connecting mobile telephone to radio network, involves establishing wireless short range communication between mobile telephones
09/19/2001EP1134693A2 Non-contact communication apparatus and control method for non-contact communication apparatus
09/19/2001EP1134690A1 Transmission power adaptation in a reader for electromagnetic transponders
09/19/2001CN2449304Y Paging remote controlled anti-robbing alarm device
09/18/2001US6291907 Magnetically coupled signal isolator using a faraday shielded MR or GMR receiving element
09/13/2001WO2001067043A1 Ultra-sensitive magnetic field receiver capable of operating in high noise environments
09/13/2001DE10010585A1 Verfahren zur Übertragung von Daten Method for transmitting data
09/12/2001EP1131773A1 Contactless integrated circuit with reduced power consumption
09/12/2001CN2447487Y Three-point fixed anti-theft electromagnetic door lock
09/12/2001CN1312622A Radio telephone signal transmitting device
09/11/2001US6289209 Wireless communication system, radio frequency communications system, wireless communications method, radio frequency communications method
09/07/2001WO2001065718A2 Wireless power and communications cross-bar switch
09/07/2001WO2001065479A2 Data carrier having means for synchronization with a received data stream
09/07/2001WO2001065069A1 Oilwell casing electrical power pick-off points
09/07/2001WO2001065068A1 Wireless reservoir production control
09/07/2001WO2001065066A1 Wireless communication using well casing
09/07/2001WO2001065063A1 Wireless downhole well interval inflow and injection control
09/07/2001WO2001065062A2 Use of downhole high pressure gas in a gas-lift well
09/07/2001WO2001065061A1 Electro-hydraulically pressurized downhole valve actuator
09/07/2001WO2001065056A1 Wireless downhole measurement and control for optimizing gas lift well and field performance
09/07/2001WO2001065055A1 Controlled downhole chemical injection
09/07/2001WO2001065054A1 Power generation using batteries with reconfigurable discharge
09/07/2001WO2001065053A1 Tracer injection in a production well
09/07/2001CA2401705A1 Wireless downhole measurement and control for optimizing gas lift well and field performance
09/06/2001US20010019303 Method for transmission of data
09/05/2001EP1130556A1 Electronic detectable resonant tags, particularly RFID labels
09/05/2001EP1130531A2 Method for data transmission
09/05/2001CN1070672C Reference channel maintaining method of wide area paging system
09/04/2001US6285858 Electronic toll collection system and method featuring antenna arrangement
09/04/2001US6285284 Theft preventive tag and method for attaching the same
08/2001
08/29/2001EP1127657A1 Apparatus for detecting operation of machine tool
08/29/2001EP1127469A1 Rfid tag having parallel resonant circuit for magnetically decoupling tag from its environment
08/29/2001CN1310833A RFID radio frequency identification system for detecting low power resonant tags