| Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550) |
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| 10/07/2004 | WO2004085837A1 Attachable rod ignition coil |
| 10/07/2004 | US20040196668 Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element |
| 10/07/2004 | US20040196131 Inverter transformer and core structure thereof |
| 10/07/2004 | US20040196129 Circuit to mitigate transformer shorted turn |
| 10/07/2004 | US20040196128 Electrical reactor assembly having center taps |
| 10/07/2004 | US20040194769 Ignition apparatus for internal combustion engine |
| 10/07/2004 | US20040194768 Ignition spark enhancing device |
| 10/07/2004 | DE10313639A1 Elektrochemischer Gassensor The electrochemical gas sensor |
| 10/06/2004 | EP1275208B1 Arrangement for contactless transmission of electrical signals or energy |
| 10/06/2004 | CN2646928Y An electric apparatus for eliminating power network pollution |
| 10/06/2004 | CN2646927Y Harmonic current suppressor |
| 10/06/2004 | CN2646838Y Electrical arc welder |
| 09/30/2004 | WO2004084372A1 Transmitter head and a system for contactless energy transmission |
| 09/30/2004 | WO2004036879A3 Filter for segmenting power lines for communications |
| 09/30/2004 | US20040190212 Current sensor supporting structure |
| 09/30/2004 | US20040189428 Device useful for signal transfer from static surface to rotating surface and viceversa |
| 09/29/2004 | CN2645197Y Current transformer |
| 09/23/2004 | US20040183644 Cores and core laminations for electromagnetic devices |
| 09/23/2004 | US20040183640 Device for the inductive transmission of electrical power |
| 09/23/2004 | US20040183638 Ignition coil with optimized thermal stress relaxing member |
| 09/23/2004 | US20040183448 Transformer and voltage supply circuit thereof for lighting tubes |
| 09/23/2004 | DE10307458A1 Coil assembly, especially for the ignition of an internal combustion engine has a cast mass to fix the coil and an elastic mass to bond the coil to the core, giving compensation for expansion |
| 09/22/2004 | CN2643459Y Combined high-voltage current transformer |
| 09/22/2004 | CN2643457Y Constant voltage transformer for pumping unit |
| 09/22/2004 | CN1168104C AC current dividing current transformer |
| 09/21/2004 | US6794976 HF transformer assembly having a higher leakage inductance boost winding |
| 09/21/2004 | US6794975 Non-contact transformer |
| 09/21/2004 | US6794974 Ignition coil core isolation |
| 09/21/2004 | US6794860 Transformer for a current sensor |
| 09/21/2004 | US6794769 Current mode coupler having a unitary casing |
| 09/16/2004 | US20040178877 Silicon steel core for transformers or choke coils |
| 09/16/2004 | US20040178875 Current transformer |
| 09/16/2004 | US20040178873 Wound-rotor transformer and power source device using said wound-rotor transformer |
| 09/16/2004 | DE10308077A1 Vorrichtung zur Energiespeicherung und Energietransformierung Apparatus for energy storage and energy transformation |
| 09/15/2004 | EP1457671A1 Ignition coil assembly |
| 09/15/2004 | EP0956571B1 Transformer with voltage regulating means |
| 09/15/2004 | CN2641908Y Low excitation inrush current, low operation overvoltage phase-shifting transformer |
| 09/15/2004 | CN2641788Y Voltage mutual inductor for large size power transformer experiment |
| 09/15/2004 | CN1529404A Three-phase split phase-shifting transformer for high-voltage frequency conversion and its use |
| 09/15/2004 | CN1167254C Displaying monitor |
| 09/14/2004 | US6791447 Configuration for producing electrical power from a magnetic field |
| 09/14/2004 | US6791446 Inductance component comprising a permanent magnet greater in sectional area than a magnetic path and disposed in a magnetic gap |
| 09/10/2004 | WO2004036813A3 Repeaters sharing a common medium for communications |
| 09/09/2004 | US20040173194 Ignition coil,and internal combustion engine ignition device |
| 09/09/2004 | DE10216481A9 Niederspannungs-Universal-Aufsteckstromwandler mit 2 Verwendungsarten, Doppel-Stromwandler und Kombi-Stromwandler Low Voltage Universal Moulded with 2 modes of use double-CT and combined CT |
| 09/08/2004 | EP1455369A1 A residual current device |
| 09/08/2004 | EP1454096A1 Electronic ignition circuit for oil burners |
| 09/07/2004 | US6788182 Metalized polyester film with heat-seal layer on opposite side for flyback transformer application |
| 09/01/2004 | EP1451445A1 A device and a method for electrical coupling |
| 08/31/2004 | US6784781 Reactor and ballast system |
| 08/31/2004 | US6784627 Discharge lamp lighting device to light a plurality of discharge lamps |
| 08/26/2004 | WO2004073283A2 Inductive coil assembly |
| 08/26/2004 | WO2004073177A2 Inductively powered apparatus |
| 08/26/2004 | US20040164838 Element for Use in an Inductive Coupler for Downhole Drilling Components |
| 08/26/2004 | US20040164833 Inductive Coupler for Downhole Components and Method for Making Same |
| 08/26/2004 | US20040164832 Axially potted progressive wound remote mount ignition coil |
| 08/26/2004 | US20040163632 Ignition coil cassette having epoxy anchored bushings |
| 08/26/2004 | DE10261003A1 Electromagnetic transformer especially for High-Intensity-Discharge lamps has several layered secondary windings on high voltage side that are arranged on top of each other and wound from isolated wire |
| 08/25/2004 | EP1450381A1 Axially potted progessive wound remote mount ignition coil |
| 08/25/2004 | CN1523618A A photoelectric current transformer |
| 08/24/2004 | US6781500 Ingition coil for internal combustion engine |
| 08/24/2004 | US6781496 Electromagnetic connecting device for high voltage and large current |
| 08/24/2004 | US6781346 Charging unit for a contactless transfer of electric power as well as a power absorbing device and a charging system |
| 08/19/2004 | WO2004051677A3 Rod ignition coil |
| 08/19/2004 | DE20306162U1 Electromagnetic coil has coils which are wound on to cylindrical base made from rigid thermoplastic, sleeves of rigid thermoplastic being fitted on base and melted to encapsulate coils |
| 08/19/2004 | DE10304587A1 Magnetic field generating system with two dimensional winding arrangement e.g. for industrial robots, has winding connection line of each winding joined to coupling element for compensating mechanically conditioned deviations |
| 08/18/2004 | CN2634699Y Combined harmonic current suppressor |
| 08/18/2004 | CN2634618Y Maintenance free dew condensation type current mutual inductor |
| 08/18/2004 | CN2634617Y Electronic type capacitive voltage mutual inductor |
| 08/18/2004 | CN2634616Y Less oil light test transformer |
| 08/18/2004 | CN1162984C Non-contact signal transmission device |
| 08/17/2004 | US6776147 Ignition coil assembly for engine |
| 08/12/2004 | WO2004068638A2 Power line coupling device and method of using the same |
| 08/12/2004 | WO2004067901A1 Data transmission system for a downhole component |
| 08/12/2004 | US20040155748 Transformer for producing high electrical currents |
| 08/12/2004 | US20040155596 Inverter circuit for discharge lamps for multi-lamp lighting and surface light source system |
| 08/12/2004 | DE10312792B3 Contactless electrical power transmission device for supplying moving load using stationary primary circuit and power transmission head with secondary winding associated with load |
| 08/11/2004 | EP1444708A1 Plug-in unit assembly comprising instrument transformers |
| 08/11/2004 | CN2632825Y Bus style current transformer against charge evasion |
| 08/11/2004 | CN1519292A Potting material for electronic components |
| 08/11/2004 | CN1161970C 高电压变压器 High voltage transformer |
| 08/10/2004 | US6775079 Signal transmission apparatus and signal recording apparatus in which a rotary transformer is used |
| 08/10/2004 | US6774758 Low harmonic rectifier circuit |
| 08/05/2004 | US20040150532 Method and apparatus for transmitting and receiving data to and from a downhole tool |
| 08/05/2004 | US20040149471 Data transmission system for a downhole component |
| 08/04/2004 | CN2631017Y Low-voltage pole head current mutual inductor for transformer |
| 08/04/2004 | CN1518015A Wound rotor transformer and supply unit using wound rotor transformer |
| 08/03/2004 | US6771142 Network coupler |
| 07/29/2004 | US20040145839 Disconnect protection structure for rotary transformer type resolver |
| 07/29/2004 | US20040145438 Ignition coil |
| 07/28/2004 | EP1440498A1 Rod coil for ignition systems |
| 07/28/2004 | CN1159738C Power supply system for welding |
| 07/22/2004 | US20040142599 Power line coupling device and method of using the same |
| 07/22/2004 | US20040140879 Transformaer for a current sensor |
| 07/22/2004 | DE10160543B4 Stromwandler für eine NH-Sicherungsleiste, NH-Sicherungs-Lastschalteinrichtung oder dergleichen Current transformer for NH fuse strip, NH-fuse switch, or the like |
| 07/21/2004 | EP1439555A1 Potting material for electronic components |
| 07/21/2004 | CN2627629Y Full-cubic inductance ballast iron core |
| 07/21/2004 | CN1514452A 隔离式电流互感器 Isolated current transformer |
| 07/20/2004 | US6763816 Internal combustion engine ignition coil |
| 07/15/2004 | US20040137173 Potting material for electronic components |