| Patents for H01F 30 - Fixed transformers not covered by group (4,595) |
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| 06/17/2004 | US20040113565 Inverter transformer and inverter circuit |
| 06/16/2004 | EP1429352A1 Electrical device and method of producing the same |
| 06/16/2004 | CN2620918Y Three-phase combined transformer for single phase magnetic circuit, common circuit |
| 06/16/2004 | CN1505069A Coil module, transformer having the coil module and manufacturing method thereof |
| 06/16/2004 | CN1504690A 微波炉 Microwave |
| 06/15/2004 | US6750749 Amorphous metal core transformer |
| 06/10/2004 | WO2004025671A3 Electronic transformer/inductor devices and methods for making same |
| 06/10/2004 | US20040108932 Step-up transformer for magnetron driving |
| 06/10/2004 | US20040108929 Transformer |
| 06/10/2004 | US20040108926 Transformer winding |
| 06/09/2004 | EP1427261A1 Microwave oven |
| 06/09/2004 | EP1426984A1 Transformer assembly for microwave oven, method for manufacturing the same, and microwave oven having the same |
| 06/09/2004 | EP1425766A1 3-limb amorphous metal cores for three-phase transformers |
| 06/03/2004 | US20040104218 Transformer assembly for microwave oven, method for manufacturing the same, and microwave oven having the same |
| 06/03/2004 | DE10353529A1 Transformer has metal core, and coil modules each having predetermined loop number of coils and encapsulator that comprises plastic material for encapsulating coils |
| 06/03/2004 | DE10304606B3 Transformer providing high electrical currents e.g. for magnetization of magnets or magnetic field deformation, has secondary provided by electrically-conductive plate divided by slit to providing current terminals |
| 05/26/2004 | CN2618274Y Transformer with V-shape leads |
| 05/25/2004 | US6741484 Power modulator having at least one pulse generating module; multiple cores; and primary windings parallel-connected such that each pulse generating module drives all cores |
| 05/25/2004 | US6741153 Flat high-voltage impulse transformer |
| 05/21/2004 | WO2004042922A1 System for generating high-power pulse |
| 05/19/2004 | CN1497621A Transformer, power supply switching device and manufacturing method of transformer |
| 05/19/2004 | CN1497620A High-tension transformer |
| 05/13/2004 | US20040089468 Induction winding |
| 05/12/2004 | CN2615838Y 干式变压器 Dry-type transformers |
| 05/12/2004 | CN1496214A Transformer and transformer unit with said transformer |
| 05/12/2004 | CN1495813A Step-up transformer for driving magnetron |
| 05/11/2004 | US6734773 Transformer with integrated inductor |
| 05/05/2004 | CN1494204A Single phase current increasing apparatus |
| 05/05/2004 | CN1494203A Three phase current increasing apparatus |
| 05/05/2004 | CN1494094A Lightning protection antiinterference capactive transformer |
| 04/29/2004 | WO2003094365A3 Construction of medium voltage power line data couplers |
| 04/29/2004 | US20040080393 Insulation and integrated heat sink for high frequency, low output voltage toroidal inductors and transformers |
| 04/28/2004 | EP0887815B1 Converter transformer |
| 04/28/2004 | CN1492455A Panel mounting type choke coil |
| 04/27/2004 | US6727791 Capacitive voltage transformer |
| 04/22/2004 | US20040075524 High-voltage transformer |
| 04/22/2004 | DE10246261A1 Vorrichtung zur induktiven Ankopplung von elektrischen Signalen an eine Spannungsversorgungsleitung sowie Bearbeitungsverfahren für einen Bandwickel Device for inductive coupling of electrical signals to a voltage supply line and processing method for a tape winding |
| 04/21/2004 | EP1410489A2 Power converters |
| 04/21/2004 | CN1490829A Magnetic core and magnetic field shielding component and coil, transformer, electronic apparatus and camera device |
| 04/15/2004 | DE20303983U1 Tubular transistor end-stage screened against stray inductance, comprising amplifier of low stray, annular core transformers, with fore- and end-stage tubes and output |
| 04/14/2004 | CN1489159A 电感元件 Inductive element |
| 04/13/2004 | US6720855 Magnetic-flux conduits |
| 04/08/2004 | US20040066267 Toroidal inductive devices and methods of making the same |
| 04/07/2004 | EP1406369A2 Device for inductive coupling of electric signals to a voltage supply line and method for making a wound web |
| 04/07/2004 | EP1405321A1 Transformer |
| 04/07/2004 | CN1488153A Toroidal inductive devices and methods of making the same |
| 04/01/2004 | WO2004027792A1 Transformer and transformer unit having the same |
| 04/01/2004 | US20040061586 Wire core inductive devices having a flux coupling structure and methods of making the same |
| 03/31/2004 | EP1403888A2 Reactor unit |
| 03/30/2004 | US6714111 Inverter transformer |
| 03/25/2004 | WO2004025671A2 Electronic transformer/inductor devices and methods for making same |
| 03/25/2004 | US20040056747 Reactor unit |
| 03/25/2004 | DE19508695B4 Trafoklemme Transformer Terminal |
| 03/25/2004 | CA2498819A1 Transformer/inductor devices and methods for making same |
| 03/24/2004 | EP1400988A2 Step-up transformer for magnetron driving |
| 03/24/2004 | EP1399934A1 E-i or e-e transformer |
| 03/24/2004 | EP1021811B1 Superconducting coreless transformer |
| 03/24/2004 | CN2607648Y Columnar transformer |
| 03/24/2004 | CN1484258A Transformer with heat conductive glue auxiliary radiation |
| 03/23/2004 | US6710692 Coil component and method for manufacturing the same |
| 03/18/2004 | US20040051617 Wire core inductive devices having a biassing magnet and methods of making the same |
| 03/17/2004 | CN2606960Y Packaged transformer |
| 03/10/2004 | CN1141721C Power distributing transformer-switch combination |
| 03/09/2004 | US6703724 Electric machine |
| 03/03/2004 | EP1393333A2 Devices and methods for protecting windings around a sharp edged core |
| 03/03/2004 | CN2605651Y High-power high-frequency transformer |
| 02/26/2004 | WO2004017340A1 Reactor core for a non-linear core-type reactor and method for the production thereof |
| 02/26/2004 | WO2004017338A1 Inductive component and use of said component |
| 02/26/2004 | US20040037597 Magnetic core and magnetic field shield member,and excitation coil, transformer, electric equipment, and electrophotographic apparatuses using the magnetic core and the magnetic field shield member |
| 02/26/2004 | US20040036454 Signal transformer and method for operating such a signal transformer |
| 02/25/2004 | EP1391900A1 Signal transformer as well as method of operation of such a signal transformer |
| 02/25/2004 | EP0923783B1 Single coil constitutive of windings for air-core transformer |
| 02/25/2004 | CN1477656A Fault phase-supplementing combined transformer |
| 02/20/2004 | CA2396735A1 Power transformer elevator |
| 02/18/2004 | CN1476025A Out going line method of transformer and its structure |
| 02/12/2004 | DE10234979A1 Inductance core has a ring shaped with a profiled radial slot produced in sintered material to produce a non linear characteristic |
| 02/11/2004 | CN1138286C Transformer |
| 02/10/2004 | US6690256 Coil device |
| 02/04/2004 | CN1472754A Coils |
| 01/27/2004 | US6683524 Transformer core |
| 01/22/2004 | US20040012042 Isolating material element for the assembly of inductive electronic components |
| 01/20/2004 | US6680665 Three-phase current transformer |
| 01/07/2004 | CN1466679A Electronic transformer/inductor device and methods for making same |
| 12/30/2003 | US6668444 Method for manufacturing a wound, multi-cored amorphous metal transformer core |
| 12/25/2003 | US20030234639 Multi-site spare transformer |
| 12/17/2003 | CN1462456A Planar coil and planar transformer |
| 12/16/2003 | US6663039 Process for manufacturing an electrical-power transformer having phase windings formed from insulated conductive cabling |
| 12/11/2003 | WO2003102980A1 Step-up transformer |
| 12/11/2003 | US20030227365 Transformer core |
| 12/10/2003 | CN2591740Y Single-machine 18 phase rectifier transformer |
| 12/04/2003 | US20030222751 Coil |
| 12/04/2003 | US20030222748 Construction of medium voltage power line data couplers |
| 12/04/2003 | US20030222745 Combination of transformer and coil |
| 12/03/2003 | EP1367612A1 Coil bobbin and inductance with such bobbin |
| 12/02/2003 | US6657529 Magnetic component |
| 11/27/2003 | WO2003079378A3 High impedance electrical transformer and manufacturing method |
| 11/27/2003 | DE10223995C1 Coil body for annular choke coil has wire guide devices at its ends for maintaining wire windings in required pattern |
| 11/26/2003 | EP1364378A1 Induction winding |
| 11/26/2003 | CN2588506Y T-type transformer for electric furnace |
| 11/26/2003 | CN1458655A Three phase to two phase balance transformer |