| Patents for H01F 30 - Fixed transformers not covered by group (4,595) |
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| 02/14/2002 | US20020017974 Electrical transformer |
| 02/14/2002 | US20020017971 Transformer |
| 02/14/2002 | US20020017878 Power supply apparatus, an electronic ballast using the power supply, and a self-ballasted fluorescent lamp |
| 02/13/2002 | CN2476895Y Single-phase pre-assembling converting station |
| 02/13/2002 | CN2476864Y 10KV/0.4KV multifunction environmental protection distribution transformer |
| 02/12/2002 | CA2079323C Cable coupling transformer |
| 02/06/2002 | EP1129458A4 Endless core for a multiphase transformer and a transformer incorporating same |
| 02/06/2002 | CN1334573A Method and device for changing three-phase transformer to single-phase one |
| 01/31/2002 | WO2002009128A1 High frequency transformer with integrated rectifiers |
| 01/31/2002 | US20020011914 Transformer |
| 01/30/2002 | CN2475110Y Transformer |
| 01/30/2002 | CN1333915A High-voltage transformer |
| 01/30/2002 | CN1078732C High voltage transfomer |
| 01/24/2002 | US20020008604 Wire core inductive devices |
| 01/22/2002 | US6340851 Modular transformer arrangement for use with multi-level power converter |
| 01/17/2002 | WO2001065572A3 Transformer core |
| 01/10/2002 | US20020003715 Isolated converter |
| 01/03/2002 | DE10030605A1 Elektronisches Bauteil Electronic component |
| 01/02/2002 | EP1168387A2 Isolated converter |
| 01/02/2002 | EP1168384A1 Electronic component |
| 01/01/2002 | US6335671 Surface mount circuit assembly |
| 01/01/2002 | US6334972 Method for forming a resin molding for a coil of a transformer |
| 12/26/2001 | CN1328690A Three-phase transformer |
| 12/25/2001 | US6333881 Semiconductor memory |
| 12/19/2001 | CN1327244A Energy saving transformer |
| 12/12/2001 | CN2465291Y Combined coiled iron core three-phase transformer |
| 12/12/2001 | CN2465290Y High-efficient high and intermediate frequency transformer |
| 12/05/2001 | CN2463938Y Three-phase-two-phase balance phasing transformer |
| 12/05/2001 | CN2463937Y Semi-closed dry transformer |
| 12/05/2001 | CN2463931Y Power transformer with round section core |
| 11/29/2001 | WO2001091142A1 Multi-layer, multi-functioning printed circuit board |
| 11/28/2001 | EP1157454A1 Power supply with flux-controlled transformer |
| 11/28/2001 | CN2462523Y D-shape winding-form 3D transformer |
| 11/28/2001 | CN1324083A Power transformer changing triphase into four-phase |
| 11/20/2001 | US6320492 Transformer and coil bobbin therefor |
| 11/20/2001 | US6320490 Integrated planar transformer and inductor assembly |
| 11/14/2001 | EP1154446A1 High-voltage transformer |
| 11/14/2001 | CN1322365A Transformer |
| 11/14/2001 | CN1074850C Transformer and coil bobbin therefor |
| 11/07/2001 | EP1152640A2 Electromagnetic induction device |
| 11/07/2001 | CN2458704Y Step-up transformer for mine |
| 11/07/2001 | CN2458703Y Single-phase rolled iron-core transformer |
| 11/01/2001 | WO2001082316A1 A wound transformer core and a method and apparatus for manufacturing thereof |
| 10/31/2001 | CN2457711Y Power transformer |
| 10/31/2001 | CN1319852A Electromagnetic sensor |
| 10/25/2001 | US20010033216 Amorphous metal core transformer |
| 10/25/2001 | US20010033175 Coil for automated mounting |
| 10/24/2001 | CN2456282Y Non-crystal transformer |
| 10/24/2001 | CN1319238A Planar transformer |
| 10/24/2001 | CN1318851A Harmonic wave shielding balanced transfermer |
| 10/18/2001 | US20010030595 Inductor and method for manufacturing same |
| 10/17/2001 | EP1145388A2 Power cord provided with a power cord transformer |
| 10/17/2001 | CN2454880Y V/V connected conjugate three-to-two phase transformer |
| 10/11/2001 | WO2001075911A1 A multiphase induction device |
| 10/11/2001 | DE10064076A1 Transformator Transformer |
| 10/11/2001 | DE10016974A1 Spule für automatisierte Montage Coil for automated assembly |
| 10/10/2001 | EP1143461A1 Automatically mounted coil |
| 10/10/2001 | CN1316751A Ring-type three-phase transformer and its manufacture method |
| 10/10/2001 | CN1316750A Coil for autoamtic erected |
| 10/09/2001 | US6300856 Electrical transformer |
| 10/04/2001 | US20010026463 Arrangement for transferring information in transformer |
| 10/04/2001 | US20010026459 Transformer |
| 10/03/2001 | CN2452108Y Single-phase voltage transformer body structure |
| 10/03/2001 | CN1315736A Transformer |
| 10/02/2001 | US6297593 Boosting transformer for high-frequency heating device |
| 09/27/2001 | US20010024379 Inverter transformer |
| 09/27/2001 | US20010024152 Electromagnetic induction device |
| 09/26/2001 | EP1137017A2 Inverter Transformer |
| 09/26/2001 | EP1135782A1 Wire core inductive devices |
| 09/26/2001 | CN2450760Y Structure of current-limiting transformer |
| 09/19/2001 | EP1134756A2 Arrangement for transferring information in transformer |
| 09/19/2001 | EP1134755A1 Toroidal choking coil |
| 09/19/2001 | EP1133778A1 Transformer |
| 09/19/2001 | CN1313612A Inductors and manufacture thereof |
| 09/13/2001 | US20010020887 Toroidal choking coil |
| 09/13/2001 | US20010020886 Coil device and switching power supply apparatus using the same |
| 09/07/2001 | WO2001065572A2 Transformer core |
| 09/06/2001 | DE10009078C1 Planar transformer with multi-layer cores has at least one winding turn of secondary winding passed through only part of winding windows of total number of transformer cores |
| 09/05/2001 | EP1129518A1 Electric motor |
| 09/05/2001 | EP1129458A1 Endless core for a multiphase transformer and a transformer incorporating same |
| 09/05/2001 | CN2446644Y Perfect wholly oblique seam three-phase transformer |
| 08/28/2001 | US6281779 Coil device and switching power supply apparatus using the same |
| 08/28/2001 | US6281603 Pulse line generators |
| 08/22/2001 | EP1125308A1 A three-phase transformer |
| 08/15/2001 | CN2443472Y Energy-saving transformer for pumping unit |
| 08/09/2001 | WO2001057984A1 Inherently short-circuit-proof power distribution system |
| 08/09/2001 | WO2001057890A1 Transformer core |
| 08/09/2001 | DE10005176A1 Inhärent kurzschlußfestes Stromverteilungssystem Inherently short-circuit proof power distribution system |
| 08/09/2001 | DE10005029A1 Drossel Throttle |
| 08/08/2001 | EP1122750A1 Choke coil |
| 08/08/2001 | CN2442374Y Three phase change into two phase transformer |
| 08/08/2001 | CN1307400A Supply unit, electronic ballast using the supply and self-ballasting fluorescent lamp |
| 07/31/2001 | US6268786 Shielded wire core inductive devices |
| 07/25/2001 | CN1068954C Power supply conductor from conductive foil of the foil winding of power transformer |
| 07/18/2001 | CN1304578A Switching power supply circuit |
| 07/05/2001 | WO2001048768A1 Power conversion systems utilizing wire core inductive devices |
| 07/05/2001 | US20010006364 Low profile transformer |
| 07/04/2001 | EP1113570A1 Modular transformer for use with multi-level power converter |
| 06/26/2001 | CA2202238C Alternating current power control device |
| 06/21/2001 | DE19960881A1 Low-cost transformer design, uses cylindrical core partly enclosed by coils forming the low-voltage (LV) and high-voltage (HV) circuits |