| Patents for H01F 30 - Fixed transformers not covered by group (4,595) |
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| 05/20/2009 | CN100490030C Semi-embedded type non crystalline alloy combined transformer structure |
| 05/19/2009 | US7535331 Booster transformer for driving magnetron and transformer unit having the booster transformer |
| 05/13/2009 | CN201238263Y Wave filter of inverter |
| 05/13/2009 | CN201237969Y Great-current low-voltage transformer structure improvement of high-frequency switching type DC rectifier |
| 05/13/2009 | CN101430968A Single-phase traction transformer used for AT power supply mode high speed passenger dedicated railway |
| 05/13/2009 | CN100487835C Distributed inductance |
| 05/07/2009 | DE112007001434T5 Konfigurierbare mehrphasige gekoppelte Magnetstruktur Configurable multi-phase coupled magnetic structure |
| 05/06/2009 | CN201233803Y Special reactor having functions of transformer and reactor concurrently |
| 05/06/2009 | CN201233802Y High-resistance transformer |
| 05/06/2009 | CN100485832C Transformer with safety creepage distance |
| 04/30/2009 | WO2006051540A3 A method and device for transforming and regulating a voltage signal |
| 04/29/2009 | CN101419862A Transformer and combined construction thereof |
| 04/29/2009 | CN100483576C Standard inductance box |
| 04/28/2009 | US7523542 Method of manufacturing a magnetic element |
| 04/22/2009 | EP2051264A1 Inductor element, inductor element manufacturing method, and semiconductor device with inductor element mounted thereon |
| 04/22/2009 | CN101414508A Chip type balance-unbalance transformer |
| 04/16/2009 | CA2640990A1 Parallel gapped ferrite core |
| 04/15/2009 | EP1256120B1 Power conversion systems utilizing wire core inductive devices |
| 04/15/2009 | CN201222419Y Flat-plate transformer |
| 04/15/2009 | CN100479074C Star-ladder type wiring three-phase to two phase balance transformer |
| 04/15/2009 | CN100479073C Star-double trapezoid wired three-to-four-phase or three-to-two phase balanced transformer |
| 04/09/2009 | WO2009044841A1 Electric compressor integrated with inverter and its coil component for inverter device |
| 04/09/2009 | CA2698566A1 Multiphase inductive power supply system |
| 04/08/2009 | CN201219064Y Energy-saving triangular transformer |
| 04/08/2009 | CN201219063Y Audio self-coupling output transformer used for electric vibration experiment system |
| 04/08/2009 | CN101404201A Power supply device and its transformer |
| 04/02/2009 | WO2009042076A1 A dry-type transformer with a polymer shield case and a method of manufacturing the same |
| 04/02/2009 | DE102004025212B4 Vollautomatisch fertigbarer Hochfrequenz-Übertrager Fully automatic fertigbarer high-frequency transformer |
| 04/01/2009 | CN201215764Y Novel non-crystal alloy electric transformer |
| 04/01/2009 | CN201215763Y 35KV energy saving transformer |
| 04/01/2009 | CN201215762Y Novel combined box type transformer |
| 04/01/2009 | CN201215755Y Oil immersion type electricity distribution transformer |
| 04/01/2009 | CN101399115A Transformer structure |
| 04/01/2009 | CN101399114A Multiple magnetic circuit transformer |
| 04/01/2009 | CN101399113A High and low-voltage transformer for micro-wave oven |
| 04/01/2009 | CN100474462C Transformer and lamp tube driving system using the same |
| 03/26/2009 | US20090079413 Power transformer distribution network and method of operating same |
| 03/25/2009 | CN101395682A Amorphous transformer for electric power supply |
| 03/25/2009 | CN101391333A Copper nose and copper wire welding device |
| 03/24/2009 | US7508290 Inductive component and use of said component |
| 03/18/2009 | CN201210442Y Novel high resistance self-coupled transformer |
| 03/18/2009 | CN100470689C Railway high voltage traction transformer |
| 03/11/2009 | EP2033303A2 Power supply for electrostatic precipitator |
| 03/11/2009 | CN201207615Y LLC resonance oscillation semi-bridge switch power supply output circuit for shunt-wound a plurality of homology transformer |
| 03/11/2009 | CN101385099A Power transformer |
| 03/11/2009 | CN101383554A Common mode/differential mode electromagnetic interference noise separating network |
| 03/11/2009 | CN101383224A Audio self-coupling output transformer applied in electric vibration experiment |
| 03/05/2009 | WO2009029789A1 Three-phase multi-winding device |
| 03/05/2009 | WO2009028406A1 Wire-wound coil and wire-wound coil manufacturing method |
| 03/05/2009 | US20090058584 Three-phase multi-winding device |
| 03/05/2009 | CA2698101A1 Three-phase multi-winding device |
| 03/04/2009 | CN201204118Y Resin insulated dry power transformer |
| 03/03/2009 | US7498895 Noise filter, outdoor unit and air conditioner |
| 02/26/2009 | US20090054499 results in little or no liver damage |
| 02/25/2009 | EP1797573B1 Toroidal core transformer |
| 02/25/2009 | CN201199477Y High voltage line-outgoing structure for three phase combined transformer |
| 02/25/2009 | CN101373659A Coil-out apparatus of reactor coil and iron core reactor containing the same |
| 02/25/2009 | CN101373656A Double-body structure of reactor |
| 02/11/2009 | EP1668756A4 Distributed floating series active impedances for power transmission systems |
| 02/11/2009 | EP1360708A4 Toroidal inductive devices and methods of making the same |
| 02/10/2009 | US7489527 DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same |
| 02/10/2009 | US7489485 Method and equipment for the protection of power systems against geomagnetically induced currents |
| 02/04/2009 | CN201191769Y Current type dual input non-interruption switch power-supply |
| 01/29/2009 | US20090031157 Measuring AC Power Consumption Using Choke With Inductive Power Sensor |
| 01/28/2009 | CN201188347Y High-power flat-plate transformer |
| 01/28/2009 | CN101355321A Multiple power conversion apparatus and multiple transformer |
| 01/28/2009 | CN101354955A Single-phase traction transformer for AT power supply mode high speed electrified railroad |
| 01/22/2009 | US20090021336 Inductor for the excitation of polyharmonic rotating magnetic fields |
| 01/21/2009 | CN201185127Y Transformer |
| 01/14/2009 | CN201181642Y Transformer structure |
| 01/14/2009 | CN201181641Y Iron-core reactor |
| 01/14/2009 | CN201181633Y 10KV and 20KV dual-purpose single-phase rolled iron-core transformer |
| 01/07/2009 | CN201178516Y 灯管模块 Lamp Module |
| 01/07/2009 | CN100449660C Power conversion system utilizing wire core inductive devices |
| 01/06/2009 | US7474188 40° phase-shifting autotransformer |
| 12/31/2008 | EP2009651A1 High-voltage transformer |
| 12/31/2008 | CN201174314Y Conjugated serial reactor |
| 12/31/2008 | CN201174313Y Extra-high voltage single-phase autotransformer |
| 12/24/2008 | CN201170986Y 变压器 Transformer |
| 12/17/2008 | CN101326704A Power conversion device and power conversion system |
| 12/17/2008 | CN101326598A Composite transformer and insulated switching power supply |
| 12/17/2008 | CN101325119A Boosting transformer for driving magnetron |
| 12/11/2008 | DE102007026042A1 Verfahren und Vorrichtung zum Herstellen eines Ringkerntransformators Method and device for producing a toroidal transformer |
| 12/10/2008 | CN201163571Y Balancing transformator and back light device |
| 12/10/2008 | CN101322202A Switching transformer |
| 12/04/2008 | US20080300284 sustained release niacin formulation with side effect reduction of liver toxicity and effects on glucose metabolism and uric acid levels |
| 12/03/2008 | CN101315830A Energy-saving environment-friendly transformer device |
| 11/27/2008 | WO2008142889A1 Transformer |
| 11/27/2008 | WO2008142464A1 Lifting hook assembly for hollow electric components, especially toroid transformers |
| 11/26/2008 | CN101312094A Combination type transformer |
| 11/26/2008 | CN101312093A Energy-saving -type variable type water cooled type bushing transformer |
| 11/25/2008 | US7456724 Electrical steel sheet for low-noise transformer and low-noise transformer |
| 11/25/2008 | US7456716 Electrical devices having adjustable electrical characteristics |
| 11/19/2008 | CN101308723A Transformer construction |
| 11/19/2008 | CN101308722A 三维变压器 Three transformers |
| 11/19/2008 | CN100435247C Power apparatus and transformer thereof |
| 11/19/2008 | CN100435246C Switch transformer |
| 11/13/2008 | WO2008136383A1 Winding inductor and process for manufacturing the same |
| 11/12/2008 | EP1991034A1 Discharge lamp lighting circuit and electronic device |
| 11/12/2008 | EP1990812A1 Amorphous transformer for electric power supply |