| Patents for H01F 19 - Fixed transformers or mutual inductances of the signal type (1,296) |
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| 06/17/2004 | DE10255376A1 Inductive structural element, useful for the transfer of energy or data from primary to secondary circuit, comprising air gaps and a frame type core |
| 06/16/2004 | EP1429352A1 Electrical device and method of producing the same |
| 06/15/2004 | US6750752 High power wideband balun and power combiner/divider incorporating such a balun |
| 06/10/2004 | WO2004049675A2 Arrangement of an inductive coupler for power line communications |
| 06/10/2004 | CA2507126A1 Arrangement of an inductive coupler for power line communications |
| 06/03/2004 | US20040104798 Arrangement of an inductive coupler for power line communications |
| 05/21/2004 | WO2004042922A1 System for generating high-power pulse |
| 05/18/2004 | US6738240 Microtransformer for system-on-chip power supply |
| 05/13/2004 | US20040090300 Ferrite cores with a new shape |
| 05/13/2004 | DE10000118B4 Magnetischer Kern The magnetic core |
| 05/12/2004 | EP1417691A1 Planar inductive component and a planar transformer |
| 05/12/2004 | EP1208692A4 High frequency network communications over various lines |
| 05/06/2004 | US20040085176 High power wideband balun and power combiner/divider incorporating such a balun |
| 05/06/2004 | EP1416575A1 Balun transformer |
| 05/06/2004 | DE10248471A1 Transformer circuit for communication system such as xDSL has two transformers connected together to create circuit with band-pass characteristic |
| 04/29/2004 | WO2003094365A3 Construction of medium voltage power line data couplers |
| 04/29/2004 | US20040080392 Integrated circuit transformer |
| 04/15/2004 | US20040070893 Microtransformer for system-on-chip power supply |
| 04/13/2004 | US6721166 Ceramic electronic component and method for manufacturing the same |
| 04/08/2004 | WO2003065597A3 High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies |
| 04/07/2004 | EP1405321A1 Transformer |
| 04/07/2004 | EP1405319A1 Multiple-interleaved integrated circuit transformer |
| 04/06/2004 | US6718040 Transformer, loudspeaker device, loudspeaker network, and loudspeaker system |
| 04/06/2004 | US6717502 Integrated balun and transformer structures |
| 04/01/2004 | US20040061581 3-Line balun transformer |
| 03/31/2004 | CN1485947A 3-line balun transformer |
| 03/30/2004 | CA2284958C Output choke for d.c. welder and method of using same |
| 03/03/2004 | CN2605651Y High-power high-frequency transformer |
| 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 | EP1082737B1 Safety isolating transformer |
| 02/24/2004 | US6696913 Ferrite core for a transformer |
| 02/11/2004 | EP1388988A2 Chip-scale coils and isolators based thereon |
| 02/11/2004 | EP1388907A1 Broadband planar coupled spiral balun |
| 02/11/2004 | CN1475019A Ferrite core with novel construction |
| 02/04/2004 | CN1137496C Coil element |
| 02/03/2004 | US6686832 High frequency network multiplexed communications over various lines |
| 01/27/2004 | US6683522 Planar miniature inductors and transformers |
| 01/27/2004 | US6683510 Ultra-wideband planar coupled spiral balun |
| 01/22/2004 | US20040012933 Magnetically coupled RJ-45 modular jack assembly for ethernet applications |
| 01/22/2004 | US20040012042 Isolating material element for the assembly of inductive electronic components |
| 01/21/2004 | EP1383145A1 Laminated balun transformer |
| 12/17/2003 | CN1462456A Planar coil and planar transformer |
| 12/10/2003 | CN1461488A Laminated balun transformer |
| 12/04/2003 | US20030222748 Construction of medium voltage power line data couplers |
| 11/13/2003 | WO2003094365A2 Construction of medium voltage power line data couplers |
| 11/13/2003 | WO2003094179A1 Pulse transformer for transmitting and receiving signal |
| 11/13/2003 | CA2485094A1 Construction of medium voltage power line data couplers |
| 11/12/2003 | CN1455968A Integrated broadside coupled transmission line element |
| 10/28/2003 | US6639499 Inductance component in which a permanent magnet for applying a magnetic bias is arranged outside an excitation coil |
| 10/22/2003 | EP1355328A1 Support for the assembly of inductive electronic components |
| 10/22/2003 | EP1354371A1 Integrated broadside coupled transmission line element |
| 10/22/2003 | CN1450571A Tranformox formed between two wiring-layers |
| 10/21/2003 | US6636140 High-frequency large current handling transformer |
| 10/15/2003 | CA2425592A1 Isolating material element for the assembly of inductive electronic components |
| 10/01/2003 | EP1166440B1 Transformer with compensation transmission line |
| 10/01/2003 | CN2577420Y Audio-frequency transformer |
| 09/30/2003 | US6628189 Laminated balun transformer |
| 09/30/2003 | CA2135803C Step switch |
| 09/24/2003 | EP1346380A1 High voltage transformer with over voltage protection, and method for over voltage protection |
| 09/10/2003 | CN2572522Y High-frequency transformer |
| 09/04/2003 | WO2003073446A1 Transformer |
| 09/02/2003 | US6614670 Isolation circuit for providing isolation from a switch of a welding power supply |
| 08/28/2003 | WO2003071675A2 Thirty-degree length impedance transformer |
| 08/21/2003 | WO2003069795A1 System and associated suppression assembly for limiting electromagnetic emissions in network devices communicating via a network bus |
| 08/21/2003 | US20030156003 Printed circuit board transformer |
| 08/21/2003 | US20030156001 Thirty-degree length impedance transformer |
| 08/14/2003 | US20030154316 System and associated suppression assembly for limiting electromagnetic emissions in network devices communicating via a network bus |
| 08/14/2003 | US20030151881 First conductive layer has a plurality of interleaved inductors; second conductive layer above the substrate, wherein the second conductive layer has at least one inductor. |
| 08/14/2003 | US20030150898 Micromagnetic device for power processing applications and method of manufacture therefor |
| 08/13/2003 | EP1334495A1 Ferrite core with a novel construction |
| 08/07/2003 | WO2003065597A2 High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies |
| 08/06/2003 | CN1434469A Method for making pulse transformer having plastics metalated film |
| 08/05/2003 | US6603383 Multilayer balun transformer structure |
| 07/31/2003 | DE20306035U1 Power supply stage for supplying low voltage loads has coupling capacitance between transformer windings reduced by special winding layer structure, low transformer current gradients |
| 07/30/2003 | CN1433563A Ceramic electronic device and method of manufacture thereof |
| 07/29/2003 | US6600910 Radio frequency transformer and its use |
| 07/29/2003 | US6600404 Planar coil and planar transformer, and process of fabricating a high-aspect conductive device |
| 07/24/2003 | US20030137383 On-chip transformer balun |
| 07/22/2003 | US6597593 Powering IC chips using AC signals |
| 07/17/2003 | US20030132825 Planar coil and planar transformer |
| 06/17/2003 | US6580334 Monolithically integrated transformer |
| 06/10/2003 | US6577219 Multiple-interleaved integrated circuit transformer |
| 06/05/2003 | US20030102948 Method for increased coupling coefficient in a pulse type transformer through coil configuration and varied core area |
| 05/22/2003 | WO2003043034A1 Controlled induction device and method of manufacturing |
| 05/22/2003 | CA2466706A1 Controlled induction device and method of manufacturing |
| 05/15/2003 | WO2003041272A1 Integrated balun and transformer structure |
| 05/08/2003 | US20030085788 Integrated balun and transformer structures |
| 04/29/2003 | US6556117 Multi-channel uniform output type transformer |
| 04/22/2003 | USRE38082 High frequency pulse transformer for an IGBT gate drive |
| 04/17/2003 | US20030071706 Planar transformers |
| 04/02/2003 | CN1407565A Special output transformer for power amplifier with wide frequency band of audio frequency to ultra-audio frequency |
| 03/19/2003 | EP1293995A2 Inductive electronic flat-type component, in particular planar transformer or planar inductor |
| 03/19/2003 | EP0875908B1 High frequency transformer |
| 03/12/2003 | CN2540016Y Pulse transformer containing plastic metallic membrane |
| 03/11/2003 | US6532161 Power supply with flux-controlled transformer |
| 03/11/2003 | US6531943 Balun-transformer |
| 03/06/2003 | US20030042571 Chip-scale coils and isolators based thereon |
| 03/05/2003 | CN1401127A Electronic component-use substrate and electronic component |
| 03/05/2003 | CN1401124A High voltage transformer with over voltage protection,and method for over voltage protection |