| Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550) |
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| 03/24/1999 | CN2311845Y Outdoor dry mutual inductor |
| 03/18/1999 | DE19740664A1 Transformer arrangement with isolating device |
| 03/17/1999 | EP0902605A1 Discharge lamp lighting device |
| 03/17/1999 | EP0902523A1 Charging system for motor-driven vehicle |
| 03/17/1999 | EP0902442A1 Coil with inductive and capacitive characteristics |
| 03/17/1999 | EP0902238A1 High voltage ignition system for gas ranges |
| 03/11/1999 | DE19736602A1 Current transducer unit |
| 03/10/1999 | CN1210617A Converter transformer |
| 03/03/1999 | EP0898651A1 Low inductance high energy inductive ignition system |
| 03/02/1999 | US5875767 Ignition coil arrangement for internal combustion engines |
| 02/25/1999 | WO1999009633A1 Device for contactless transmission of electric energy |
| 02/25/1999 | DE19735685A1 Non contact electrical energy transmission device for personal vehicle |
| 02/24/1999 | EP0898289A2 Ignition coil having a toroidal magnet |
| 02/24/1999 | EP0897999A2 Method and apparatus for contactless energy and signal transfer in textile machines, in particular in twisting machines |
| 02/24/1999 | EP0897542A1 Current sensor, in particular for low currents |
| 02/17/1999 | EP0896726A1 Magnetic core-coil assembly for spark ignition systems |
| 02/17/1999 | EP0896725A1 Magnetic core-coil assembly for spark ignition systems |
| 02/17/1999 | EP0896724A1 Magnetic core-coil assembly for spark ignition systems |
| 02/17/1999 | CN1208237A Ignition coil having toroidal magnet |
| 02/16/1999 | US5872163 Liquid epoxy resin composition containing wollastonite and calcite |
| 02/16/1999 | CA2138822C Dc current sensor |
| 02/11/1999 | WO1999007047A1 Bushing-type current transformer for an air-insulated metal-encapsulated middle voltage switching station |
| 02/11/1999 | DE19733852A1 Rail current transducer with shape-locking primary rail clamp |
| 02/10/1999 | CN2307343Y Energy-saving transformer for electric furnace |
| 02/10/1999 | CN1207602A Charging connector for electric vehicle |
| 02/09/1999 | US5868123 Magnetic core-coil assembly for spark ignition systems |
| 02/04/1999 | WO1999005690A1 Current transformer for three-phase systems |
| 02/04/1999 | DE19829845A1 Ignition coils for internal combustion engines |
| 02/03/1999 | EP0894357A1 Electrical installation using electromagnetic induction |
| 01/28/1999 | WO1999004403A1 System for transferring electrical power between non-contacting elements in relative motion |
| 01/28/1999 | DE19736346C1 Arrangement for transferring electrical energy between a vehicle and its steering wheel |
| 01/28/1999 | DE19731170A1 Stromwandler für Drehstromsysteme Current transformers for AC systems |
| 01/27/1999 | EP0893806A2 Current transformer device with a current shunting path and its use |
| 01/27/1999 | EP0893599A1 Ignition coil with open core and central air gap |
| 01/27/1999 | CN2305743Y Structure-improved fly back transformer |
| 01/26/1999 | US5864276 Current transformer assemblies |
| 01/26/1999 | CA2143657C A current transformer |
| 01/21/1999 | WO1999003118A1 Diode-split high-voltage transformer |
| 01/21/1999 | WO1998045867A3 Unit for switching electrical energy |
| 01/20/1999 | EP0811168B1 Voltage transformer with increased electric strength |
| 01/20/1999 | CN1205527A Ignition coil bank-winding method |
| 01/20/1999 | CN1041775C Diode split high voltage transformer for television receiver |
| 01/20/1999 | CN1041765C Secondary winding bobbin for ignition coil for internal combustion engine |
| 01/19/1999 | US5861791 For an internal combustion engine |
| 01/14/1999 | WO1999001878A1 Split transformer and transmission controller comprising the split transformer |
| 01/14/1999 | DE19728875A1 High voltage transformer |
| 01/13/1999 | EP0750323B1 Fa connector and work pallet using it |
| 01/13/1999 | CN2303702Y Alternative-current liquid-immersed electric welder capable of balancing three-phase power-supply current |
| 01/13/1999 | CN1205124A Bar-type coil for ignition systems |
| 01/13/1999 | CN1204845A Flyback transformer |
| 01/13/1999 | CN1041663C Method for making ferrite core |
| 01/12/1999 | US5859529 Voltage transformer with increased electric strength |
| 01/07/1999 | EP0889490A2 Current transformer for a metal-encapsulated gas-insulated high voltage installation |
| 01/07/1999 | DE19723130A1 Leakage current display arrangement for electrical conductors in house |
| 01/06/1999 | CN2303369Y Assembling type low voltage current transformer |
| 01/05/1999 | US5855261 For guiding an electrically powered vehicle |
| 12/30/1998 | EP0887815A1 Converter transformer |
| 12/30/1998 | EP0887547A1 Coil with horizontal secondary spool |
| 12/30/1998 | CN2302589Y Three-phase multi-function moving-iron dividing-magnet sillicon rectifier welder |
| 12/30/1998 | CN2302588Y Energy-saving arc furnace transformer |
| 12/30/1998 | CN1203432A Magnetic coupling device for charging electric car |
| 12/23/1998 | WO1998058267A1 Toroidal core current transformer with integrated measuring shunt |
| 12/23/1998 | EP0886363A1 Power source apparatus |
| 12/23/1998 | CN2301780Y Energy-saving ring core welder |
| 12/23/1998 | CN1202976A Magnetic core-coil assembly for spark ignition systems |
| 12/23/1998 | CN1202708A Core assembly for coil units and method for producing the same |
| 12/22/1998 | US5852395 Rogovski coil |
| 12/22/1998 | US5852394 Electromagnetic coupling device for charging an electric motor vehicle |
| 12/17/1998 | WO1998057339A1 Slit transformer |
| 12/16/1998 | EP0884933A2 An ignition transformer for gas discharge bulbs |
| 12/16/1998 | EP0884742A2 Ignition circuit |
| 12/16/1998 | CN1202272A Coil winding structure of flyback transformer |
| 12/16/1998 | CN1202265A Cylindrical coil winding structure of flyback transformer |
| 12/10/1998 | DE19824642A1 Ignition device for IC engine |
| 12/03/1998 | DE19823459A1 Ignition arrangement for internal combustion engine |
| 12/02/1998 | CN1200836A Ballast for discharge lamp and method and apparatus for mfg. same |
| 12/02/1998 | CN1200622A Flyback transformer |
| 12/02/1998 | CN1041040C Plasma-arc power supply apparatus |
| 12/02/1998 | CN1041031C Transformer for arc welder |
| 12/01/1998 | US5844793 High-voltage transformer for a televison receiver including separated partial windings tuned to different harmonics |
| 12/01/1998 | US5844778 High-voltage electronic device |
| 12/01/1998 | US5844462 Magnetic core-coil assembly for spark ignition systems |
| 11/26/1998 | WO1998053467A1 Ignition coil unit for engine and engine provided with plastic head cover |
| 11/25/1998 | EP0715764B1 Method of forming an ignition coil assembly |
| 11/25/1998 | CN1199913A Single-unit bobbin for flyback transformer |
| 11/25/1998 | CN1199912A Molding structure for flyback transformer |
| 11/25/1998 | CN1199911A Single body bobbin structure for flyback transformer |
| 11/24/1998 | US5841336 For internal combustion engines; ferromagnetic amorphous metal alloy |
| 11/24/1998 | US5841267 Power flow control with rotary transformers |
| 11/24/1998 | US5839554 Power collector for inductive power transfer |
| 11/19/1998 | WO1998052350A1 Coupler for transmitting signals across a rotating interface |
| 11/19/1998 | WO1998052172A2 Plug-and-socket connection for power and data transmission |
| 11/19/1998 | WO1998052054A1 Current transformer for alternating current measurements in the low voltage range |
| 11/19/1998 | WO1998052052A2 Magnet core |
| 11/19/1998 | CA2290438A1 Coupler for transmitting signals across a rotating interface |
| 11/18/1998 | EP0878811A2 Magnetic coupling device for charging electric car |
| 11/18/1998 | EP0878810A2 Ignition coil for ignition systems of internal combustion engines |
| 11/18/1998 | EP0878809A2 Ignition coil |
| 11/18/1998 | EP0878785A2 Universal security element and production method thereof |
| 11/12/1998 | WO1998050993A1 Inductive power transfer across an extended gap |