| Patents for H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859) |
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| 05/05/1993 | EP0539696A1 Method for contactless energy and data transmission |
| 05/05/1993 | CN1071793A Wireless earphone receiving and teaching system via power lines |
| 04/21/1993 | CN2130309Y Computer informing machine |
| 04/21/1993 | CN2130308Y Diplex carrier machine with repeatedly-used broadcasting wire without centre-control |
| 04/20/1993 | US5204675 Toll collecting system for a vehicle |
| 04/14/1993 | EP0536168A1 A data transmission equipment. |
| 04/13/1993 | CA1316268C Programmable memory for an encoding system |
| 04/13/1993 | CA1316253C Service and entertainment system |
| 04/01/1993 | WO1993006666A1 Improved electromagnetic hearing system |
| 03/30/1993 | CA1315375C Apparatus and network for transferring packets of electronic signals and associated method |
| 03/24/1993 | EP0532989A1 Wireless transmission equipment for power and data transmission |
| 03/23/1993 | CA1314938C Transceiver system for communication over wire laid along the path of guided vehicles |
| 03/18/1993 | WO1993005486A1 Binary encoded multiple frequency rf identification tag |
| 03/18/1993 | CA2117184A1 Binary encoded multiple frequency rf identification tag |
| 03/17/1993 | EP0531384A1 Electric power and data signal transmission system |
| 03/09/1993 | US5193212 Circuit for saving battery for use in a radio paging receiver and method thereof |
| 02/17/1993 | CN2127215Y Infrared tv sound reciver |
| 02/16/1993 | US5187803 Regenerative rf bi-directional amplifier system |
| 02/16/1993 | US5187720 Synchronous serial communication circuit |
| 02/10/1993 | EP0526822A1 Remote intervention method in a shaft of a deep disposal side of nuclear waste |
| 02/09/1993 | CA1313514C Housing and holder assembly for a portable communication apparatus |
| 02/04/1993 | DE4125143A1 Contactless transmission system for alternating signals - has flat surface aerials as transmitter and receiver on rigid, insulating support |
| 02/03/1993 | EP0526038A1 Article removal control system |
| 02/03/1993 | EP0525459A1 Transmission device |
| 02/02/1993 | US5184001 System for remote information interchange between a portable object and a station |
| 01/19/1993 | CA1312946C Tunnel distributed cable antenna system with signal taps coupling approximately same radiated energy |
| 01/13/1993 | EP0522993A2 Message recording and broadcasting system |
| 01/13/1993 | CN1067977A Automatic language alarm deivc eby use of radio walkie-talkie |
| 01/07/1993 | EP0572382A4 Three wire system for cochlear implant processor. |
| 12/09/1992 | EP0516723A1 A receiver and transmitter arrangement intended preferably for an electronic price information system. |
| 12/08/1992 | CA1311273C Direct current position measuring device |
| 12/02/1992 | CN2123841U Infrared pulse audio frequency transceiver |
| 12/01/1992 | US5168510 Spread spectrum-time diversity communications systems and transceivers for multidrop area networks |
| 12/01/1992 | CA1311043C Control station including a conductively isolated depluggable controller |
| 11/12/1992 | DE4114448A1 Remote transmission link between two data processing units - provides optical transmission in one direction with simultaneous transmission in other direction via inductive loop |
| 11/10/1992 | CA1310065C Mine emergency communication cable and method for use |
| 11/04/1992 | EP0397755A4 Magnetic field concentrator |
| 10/29/1992 | DE4113442A1 Individually rechargeable decorative Christmas tree lighting system - comprises number of rechargeable light units that plug into tree mounted holders to form mains-independent lighting system |
| 10/28/1992 | EP0511103A1 Information transmitting system between ground and mobil stations, especially in ground-train communications |
| 10/28/1992 | CN2120411U Aural synchronous receiving device for tv |
| 10/25/1992 | WO1992019483A1 System for transmitting data between the ground and moving vehicles, particularly in ground/train communication |
| 10/25/1992 | CA2108755A1 System for transmitting data between the ground and moving vehicles, particularly in ground/train communication |
| 10/21/1992 | EP0509125A1 Device for contactless data and energy transmission and operating method |
| 10/20/1992 | US5157393 Communication system for transmitting data between a transmitting antenna utilizing leaky coaxial cable and a receive antenna in relative movement to one another |
| 10/15/1992 | WO1992017991A1 Inconspicuous communication method utilizing remote electromagnetic drive |
| 10/14/1992 | EP0253877B1 Aerial systems |
| 10/07/1992 | CN2118371U Miniature digital wireless calling apparatus |
| 10/07/1992 | CN2118370U Household totipotent wireless transmitter |
| 10/06/1992 | US5153583 Transponder |
| 10/06/1992 | US5153448 Information separation device |
| 10/06/1992 | CA1308484C Process for contactless energy and data transfer, as well as mechanically and electronically coded lock |
| 10/02/1992 | CA2106459A1 Inconspicuous communication method utilizing remote electromagnetic drive |
| 09/30/1992 | EP0506164A1 Remote control for auction-price display |
| 09/30/1992 | EP0505906A1 Pneumatic tire having an integrated circuit transponder and pressure transducer |
| 09/30/1992 | EP0505501A1 Golf cart control system |
| 09/30/1992 | CN2117673U Multifunctional interphone |
| 09/29/1992 | US5152003 Delivery of pre-recorded message response to listener |
| 09/23/1992 | EP0504492A1 Device for combining different electrical signals by means of an optical carrier modulation |
| 09/08/1992 | US5146611 Mine communication cable and method for use |
| 09/02/1992 | EP0501314A1 Modular distributed antenna system |
| 08/19/1992 | CN2113576U Portable wireless information search device |
| 08/06/1992 | WO1992013397A1 Addressing arrangement |
| 08/05/1992 | EP0497533A2 Electronic price display apparatus |
| 08/05/1992 | EP0496743A1 Recorded message delivery system |
| 08/05/1992 | CN1063386A 通信系统 Communications systems |
| 08/05/1992 | CN1017768B Method and equipment for communication in underground channel |
| 07/29/1992 | EP0496024A1 Method to reduce power loss in contactless data and power transmission devices and means to carry out this method |
| 07/15/1992 | CN1062818A Broadcast system inside road |
| 07/07/1992 | US5128972 Memory package system |
| 07/01/1992 | EP0492212A1 Conveyor pallet |
| 07/01/1992 | EP0417267A4 Vehicle tire identification system |
| 06/25/1992 | WO1992010883A1 Communication system |
| 06/17/1992 | EP0490167A1 Procedure and device for bidirectional data transmission between a textile machine and a textile product |
| 06/10/1992 | CN2107086U Wireless calling system |
| 06/03/1992 | CN2106450U Multifunctional radio calling telecontrol device for dining hall |
| 06/02/1992 | US5119070 Resonant tag |
| 05/29/1992 | WO1992009175A1 Method and apparatus for modulating and dectecting a subcarrier signal for an inductively coupled transponder |
| 05/27/1992 | CN2105808U Multifunctional wired intercommunication machine |
| 05/27/1992 | CN2105807U Wired electronic intercommunication machine |
| 05/26/1992 | US5117500 Multi system decoding receiver |
| 05/26/1992 | US5117185 Transformer-coupled transducer |
| 05/26/1992 | CA1301906C Induction-based assistive listening system |
| 05/20/1992 | CN2105147U Ultrasonic noise-reducing handy-talkie |
| 05/20/1992 | CN2105146U Multichannel radio remote control switch |
| 05/12/1992 | CA1300688C Data terminal |
| 05/06/1992 | WO1992008294A1 Receiver with automatic frequency control |
| 05/05/1992 | US5111199 Pocket-portable radio code signal transmitter for automotive keyless entry system |
| 05/05/1992 | CA1300235C Shopping cart display system |
| 04/30/1992 | DE4033673A1 Wireless alarm and communication system for hard of hearing - provides inductive transmission to receiver worn by user e.g. in shirt or jacket pocket |
| 04/28/1992 | US5109544 Paging receiver with automatic frequency control |
| 04/23/1992 | DE4033054A1 Data signal transmitting system - has sensor which detects approach of receiver, switches on information display then switches it off until next approach |
| 04/14/1992 | US5105190 Electromagnetic identification system |
| 03/25/1992 | EP0476126A1 Full-duplex, sub-band spread spectrum communications system |
| 03/24/1992 | US5099227 Storing and transmitting coded information |
| 03/18/1992 | EP0386134A4 Antenna system for magnetic and resonant circuit detection |
| 03/11/1992 | EP0473776A1 Communication system using spread spectrum and leaky transmission line |
| 03/11/1992 | CN2098767U Electronic door bell having sound remaining |
| 03/10/1992 | CA1297158C Electromagnetic communication interface |
| 03/03/1992 | US5093929 Medium frequency mine communication system |
| 02/25/1992 | CA1296390C Radio broadcast communication systems |