Patents
Patents for H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859)
07/1987
07/14/1987US4679560 Wide band inductive transdermal power and data link
07/09/1987EP0216903A4 Telemetry system for an implantable device.
07/02/1987WO1987004028A1 Magnetic transmission
06/1987
06/23/1987US4675638 Ferromagnetic multiple shell core for electric coils
06/18/1987WO1987003501A2 Communication system
06/09/1987US4672223 Proving safe operation
06/04/1987DE3622010A1 Device for signal transmission with magnetic field, an elimination of the directional effects of the transmitting and receiving coil, usable in the case of uninterrupted information flow
06/03/1987EP0208711A4 Dc to dc converter.
05/1987
05/12/1987US4665559 FM-TV audio adapter
05/12/1987US4665399 Device for transmitting of binary data between a mobile data carrier and a stationary station
05/05/1987US4663624 Pager having receiving frame tuned by transducer
05/05/1987US4663623 Decoding arrangements for synchronous receivers
04/1987
04/30/1987DE3538165A1 Device for transmitting data to a rail vehicle
04/21/1987US4660032 Radio paging receiver operable on a word-scrolling basis
04/08/1987EP0216903A1 Telemetry system for an implantable device
04/08/1987CN85107348A Audio-frequency earpiece without power and wires
03/1987
03/31/1987US4654880 Signal transmission system
03/31/1987CA1219917A1 Radio paging receiver operable on a word-scrolling basis
03/18/1987CN85106546A Mutual-inductance carrier equipment for mine production
02/1987
02/26/1987WO1987001252A1 Adapter for car radio
02/24/1987US4646081 Radio paging receiver operable on a word scrolling basis
02/24/1987CA1218415A1 Piezoelectric reed power supply for use in abnormal tire condition warning system
02/19/1987DE3627194A1 Portable radio-frequency transmitter for keyless access systems, particularly on vehicles
02/17/1987US4644321 Wireless power line communication apparatus
01/1987
01/29/1987DE3621990A1 Device for supplying transceivers inside a vehicle
01/27/1987CA1217235A1 Display radio paging receiver for variable length messages
01/21/1987EP0208711A1 Dc to dc converter.
01/15/1987WO1987000368A1 Cable car with data transmission by cable
01/08/1987DE3603098A1 A device having a number of receiving coils for avoiding a loss of reception due to the directional patterns of the transmitting and receiving coil in a signal transmission with magnetic field
01/06/1987US4634956 DC to DC converter
12/1986
12/10/1986EP0204389A2 Guide wire communications system and method
12/03/1986CN86100063A Dc to dc converter
12/02/1986US4626904 Meter for passively logging the presence and identity of TV viewers
12/02/1986US4626842 Display radio paging receiver for variable length messages
11/1986
11/26/1986EP0202408A2 A paging system, particularly for hotels
11/25/1986US4625187 Radiating coaxial electric cable
11/18/1986US4623889 Signal transmitting device
11/12/1986CN86103021A Wide band inductive transdermal power and data link
11/05/1986EP0200359A2 A wide band inductive transdermal power and data link
11/04/1986US4621374 Circuit arrangement for processing, transmitting, and acoustically reproducing digitized audio-frequency signals
11/04/1986US4621200 Control device including a conductively isolated depluggable controller
10/1986
10/21/1986CA1212999A1 Universal paging device with power conservation
10/15/1986EP0197542A2 Selective call apparatus having display
10/09/1986WO1986005675A1 Telemetry system for an implantable device
10/08/1986CN86102554A Selective calling receiver equipment with indicator
09/1986
09/23/1986CA1211793A1 Transmitter for transmitting an fsk-modulated signal
09/16/1986US4612668 FM wireless transmitter
08/1986
08/27/1986EP0192108A2 Control station
08/26/1986CA1210465A1 Personnel identification marker coil assembly for isotropic flux linkage in a given plane
08/20/1986EP0191019A1 Unit for transferring binary data between a movable data medium and a fixed station.
08/12/1986US4605897 Apparatus and method for distance determination between a receiving device and a transmitting device utilizing a curl-free magnetic vector potential field
08/12/1986CA1209710A1 Passive programmable transducer for dynamic coding
07/1986
07/30/1986EP0188925A1 Method and arrangement for data transmission between moving vehicles on a road
07/30/1986CN86101271A 无线电话系统 Wireless telephone system
07/29/1986CA1208821A1 High speed link for rotating display
07/22/1986CA1208296A1 Dual-antenna transceiver
07/17/1986WO1986004189A1 Dc to dc converter
07/08/1986US4599615 Pager receiver comprising a memory storing a sequence of information signals to be tested
07/08/1986CA1207393A1 Battery saver for a paging receiver or the like
07/02/1986CA1207029A Radio communication systems for underground mines
07/01/1986US4598325 Apparatus for transmitting digital signals across a rotary gap
06/1986
06/25/1986EP0185610A2 Device for contactless signal and energy transmission
06/17/1986US4596041 Participant-identification recording and playback system
06/17/1986CA1206206A1 Radio paging receiver having display control means
06/17/1986CA1206205A1 Battery saver circuit for use with paging receiver
05/1986
05/27/1986US4591853 Paging receiver with a decoder-P-ROM
05/14/1986EP0181314A1 Antenna system for use in tunnels for broadband signal transmission
04/1986
04/22/1986US4584707 Cordless communications system
04/01/1986CA1202682A1 Pager receiver comprising a memory storing a sequence of information signals to be tested
03/1986
03/25/1986CA1202371A1 Paging receiver
03/25/1986CA1202369A1 Transceiver
03/04/1986US4573475 Receiving radiation from loops in a common plane for monitoring hospital patients leadlessly
02/1986
02/25/1986US4573048 High speed link for rotating display
02/13/1986WO1986001058A1 Unit for transferring binary data between a movable data medium and a fixed station
01/1986
01/22/1986EP0168821A1 Pager with display
12/1985
12/10/1985US4558320 Apparatus for the contactless transmission of data or the like between two relatively rotating parts
11/1985
11/26/1985US4555792 Transmitter for transmitting an FSK-modulated signal
11/21/1985EP0161545A1 Apparatus for locating persons for an electronic timepiece
11/13/1985EP0160990A2 Inductive transmission of power and data
11/05/1985CA1196388A1 Radio paging receiver having stored message protection means
11/05/1985CA1196386A1 Battery saving circuit for paging receiver or the like
10/1985
10/29/1985US4550444 Facility for intermittent transmission of information between guideway wayside equipment and vehicles moving along the guideway
10/22/1985US4549186 Coil assembly for substantially isotropic flux linkage in a given plane
09/1985
09/17/1985US4542532 Dual-antenna transceiver
09/11/1985EP0154563A2 Dual-antenna transceiver
08/1985
08/28/1985EP0153239A1 Radiating system for broadcasting in road tunnels and powering equipment for this system
08/20/1985US4536761 Radio paging receiver having display control means
06/1985
06/19/1985EP0145430A2 Signal transmission system
06/11/1985US4523332 Battery saver circuit for use with paging receiver
06/11/1985US4523192 Data processing network
05/1985
05/22/1985EP0141961A1 Radiating coaxial cable
05/21/1985US4518961 Communication system message receiving device
05/21/1985US4518958 Capacitively coupled machine tool safety having a self-test network
05/07/1985CA1186741A1 Intermittent facility for transmitting information between a guideway and vehicles moving along this guideway
04/1985
04/24/1985EP0138090A2 Radio-wave transmission system of keyless entry system for automotive vehicle devices
04/11/1985EP0120901A4 Signal reproduction apparatus.
04/11/1985EP0061462A4 Multi-system portable paging device.
04/09/1985US4510484 Piezoelectric reed power supply for use in abnormal tire condition warning systems
03/1985
03/26/1985US4507646 Radio communication system
03/19/1985US4506386 Battery saver for a paging receiver or the like _