| Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550) |
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| 08/03/1999 | US5933332 Converter transformer |
| 08/03/1999 | CA2172105C Resistor-printed board built in a flyback transformer for a video display appliance |
| 07/28/1999 | EP0932169A2 Ignition coil for internal combustion engine and method of manufacturing an ignition coil |
| 07/28/1999 | CN2331066Y Zero sequence current mutual inductance |
| 07/28/1999 | CN1224265A Inverter control unit |
| 07/27/1999 | US5929736 Engine igniting coil device and method of winding an ignition coil |
| 07/27/1999 | US5929599 Inductive coupling apparatus for charging an electric car |
| 07/27/1999 | US5929598 Noncontact charging device, charger, cordless electric equipment, and noncontact charger |
| 07/27/1999 | US5927259 Ignition apparatus for internal combustion engine |
| 07/22/1999 | WO1999036693A1 Stick coil for ignition systems |
| 07/22/1999 | DE19802188A1 Voltage converter for measurement function in low voltage (LV) power switch |
| 07/21/1999 | EP0929948A1 Wireless energy and data transfer for a modular peripheral system |
| 07/21/1999 | EP0843871B1 Arrangement for the contactless transmission of signals between a fixed and a rotary vehicle component |
| 07/21/1999 | CN2330051Y Multi-channel output fluorescent lamp electronic ballast |
| 07/15/1999 | DE19815153C1 Current transformer for driving over-current trip of low-voltage (LV) circuit-breaker |
| 07/14/1999 | EP0929139A2 Electronic trip unit with dedicated override current sensor |
| 07/14/1999 | EP0928469A1 Apparatus for deactivation of electronic article surveillance tags |
| 07/14/1999 | CN2329080Y Electronic starter and balast |
| 07/14/1999 | CN2329006Y 110 KV ceramic capacity subdivided optical fibre voltage mutual inductor |
| 07/14/1999 | CN2329005Y 110 KV non-subdivided optical fibre voltag mutual inductor |
| 07/14/1999 | CN2329004Y 110 KV passive optical fibre current mutual inductor insulation structure |
| 07/14/1999 | CN2329003Y 110千伏无源式光纤电流互感器 110 kilovolt passive fiber optic current transformer |
| 07/14/1999 | CN2329002Y General mutual inductor for ac voltage and current |
| 07/14/1999 | CN1044146C Ignition apparatus for internal combustion engine |
| 07/13/1999 | US5923544 Noncontact power transmitting apparatus |
| 07/13/1999 | US5923236 Magnetic core-coil assembly for spark ignition system |
| 07/12/1999 | CA2258179A1 Electronic trip unit with dedicated override current sensor |
| 07/08/1999 | DE19859557A1 Rotary connector with steering angle verification function for car's steering wheel |
| 07/07/1999 | CN2328015Y Capacitor voltage mutual inductor with harmonic detection function |
| 07/07/1999 | CN1221961A Ignition coil with counter magnetic field |
| 07/01/1999 | DE19860043A1 Ignition coil without permanent magnets for road vehicle engine systems |
| 06/30/1999 | EP0926690A1 Split transformer and transmission controller comprising the split transformer |
| 06/30/1999 | CN2326381Y Small dc. electric welder |
| 06/29/1999 | US5917307 Magnetic coupling device for charging an electric vehicle |
| 06/29/1999 | US5915367 Igniter for internal combustion engine having outer packing case equipped with coil and igniter unit |
| 06/24/1999 | WO1999017016A3 High pulse rate ignition source |
| 06/23/1999 | EP0923786A1 Improved high voltage coil subassemblies and method for their production |
| 06/23/1999 | EP0862524B1 Non-contacting device for the transmission of signals between vehicle parts which moves linearly with respect to each other |
| 06/23/1999 | CN1220765A Magnetic core-coil assembly for spark ignition systems |
| 06/23/1999 | CN1220764A Magnetic core-coil assembly for spark ignition system |
| 06/23/1999 | CN1043818C Current sensor comprising magnetic circuit with air gap |
| 06/16/1999 | EP0923182A2 Non-contact power transmitting device |
| 06/16/1999 | EP0923092A2 Transformer |
| 06/16/1999 | EP0922288A1 Charging coil core insert for electric toothbrushes |
| 06/16/1999 | CN1220035A Charging system for motor-driven vehicle |
| 06/16/1999 | CN1043699C Three-phase ac current transformer |
| 06/10/1999 | DE19856801A1 Ignition plug for i.c. engine |
| 06/10/1999 | DE19851047A1 Superconductive current limiting device for fault current protection |
| 06/09/1999 | CN2323378Y Wide band failure discharge coupler |
| 06/09/1999 | CN2323160Y Ignition coil device for IC engine |
| 06/03/1999 | WO1999027603A1 Electronic device |
| 06/02/1999 | EP0918930A1 Ignition coil |
| 06/02/1999 | DE19751548A1 Discharge lamp starter transformer has a closed or gap core of electrically non-conductive material |
| 06/02/1999 | CN2322250Y Secondary tapped arc-welding transformer |
| 06/01/1999 | US5909100 Charging connector for electric vehicle |
| 06/01/1999 | US5909099 Electric vehicle charging system including refrigerant system |
| 05/27/1999 | WO1999026258A1 Transformer with improved integrated potentiometer |
| 05/27/1999 | WO1998052172A3 Plug-and-socket connection for power and data transmission |
| 05/26/1999 | EP0918342A1 Slit transformer |
| 05/26/1999 | EP0917718A1 Winding, particularly for a high-voltage ignition coil circuit |
| 05/26/1999 | CN2321104Y Current transformer avoiding or indicating fraudulent use of electricity |
| 05/25/1999 | US5907231 Magnetic coupling device for charging an electric vehicle |
| 05/25/1999 | US5906040 Method and apparatus for manufacturing a magnetic core |
| 05/19/1999 | EP0917271A2 Compensation for power transfer systems using rotary transformer |
| 05/19/1999 | EP0917270A2 Power flow control and power recovery with rotary transformers |
| 05/19/1999 | CN1217085A Magnetic core-coil assembly for spark ignition system |
| 05/14/1999 | WO1999022565A2 Planar magnetic component with transverse winding pattern |
| 05/14/1999 | WO1998052052A3 Magnet core |
| 05/12/1999 | EP0915487A1 Ignition coil with rod-shaped core |
| 05/12/1999 | DE19800924C1 Ignition coil for internal combustion engines |
| 05/12/1999 | CN2318702Y Small variable-ratio current transformer |
| 05/12/1999 | CN2318701Y Electrolytic electronic ballast |
| 05/12/1999 | CN2318700Y Interlink coupling high-voltage impact isolation transformer |
| 05/11/1999 | US5903134 Inductive battery charger |
| 05/11/1999 | US5901433 Cylindrical coil winding structure of flyback transformer |
| 05/06/1999 | WO1999022385A1 Electric power transmission device |
| 05/06/1999 | DE19800879A1 Ignition coil plug for vehicle ignition |
| 05/06/1999 | DE19749945A1 Load equalising adjustment circuit for trigger and power switch circuit low voltage (LV) installations |
| 05/06/1999 | DE19746919A1 Elektrische Übertragungsvorrichtung Electric transmission device |
| 04/28/1999 | EP0910905A1 Device for transmitting and receiving digital data by electromagnetic induction and inductive coupling |
| 04/27/1999 | US5898578 Transformer-isolated power transfer apparatus having intermittent and continuous oscillation modes of operation |
| 04/27/1999 | US5898354 Molding structure for flyback transformer |
| 04/22/1999 | WO1999019890A1 Magnetic coupler and associated method for coupling conductors |
| 04/21/1999 | CN2315643Y Energy saving self starting thin tube high efficiency fluorescent lamp ballast |
| 04/21/1999 | CN1214597A Mode coding method in binary shape encoding |
| 04/21/1999 | CN1214523A Transfering method and apparatus of energy and signal for textile machine, especially twiner |
| 04/21/1999 | CN1043070C 点火线圈 Ignition coils |
| 04/20/1999 | US5896278 Non-contact electric power transmission apparatus |
| 04/14/1999 | CN2314456Y Gapless discharge lamp ballast |
| 04/14/1999 | CN2313697Y Multi-winding electric welder |
| 04/08/1999 | WO1999017016A2 High pulse rate ignition source |
| 04/08/1999 | DE19808341A1 Low inductance cored reactor e.g. as power reactor in power pack |
| 04/08/1999 | DE19743860C1 System esp. charge part for accumulator for inductive transmission of electric power |
| 04/07/1999 | CN1213231A Method and apparatus for encoding motion vector |
| 04/06/1999 | US5890473 Ignition device for a multi-cylinder internal combustion engine |
| 03/31/1999 | EP0905972A2 Flyback transformer |
| 03/31/1999 | EP0905872A1 Regulated high voltage DC power supply and its application |
| 03/31/1999 | EP0905722A2 Ignition coil with counter magnetic field |
| 03/25/1999 | WO1999014772A1 Transformer system provided with a decoupling system |
| 03/24/1999 | EP0847342B1 Device for the contactless transfer of signals between two vehicle parts mounted to rotate with respect to each other |