| Patents for H01F 21 - Variable inductances or transformers of the signal type (1,432) |
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| 06/09/2010 | CN201503574U Electromagnetic pen and electromagnetic induction equipment |
| 06/08/2010 | US7733207 Vertically formed inductor and electronic device having the same |
| 06/03/2010 | US20100134229 Transmission-line transformer and amplifier unit having the same |
| 06/02/2010 | CN201498321U U1 type combined magnetic core with finely adjustable air gap |
| 05/26/2010 | CN1973342B Planar inductor |
| 05/25/2010 | US7724115 Circuit carrier and transformer assembly |
| 05/19/2010 | EP2185793A1 System and method for sensing pressure using an inductive element |
| 05/12/2010 | CN201465709U Variable resonant inductor |
| 05/11/2010 | US7714687 Transformer |
| 05/05/2010 | CN1697099B Inductive devices and methods |
| 05/04/2010 | US7710235 Inductors fabricated from spiral nanocoils and fabricated using noncoil spiral pitch control techniques |
| 05/04/2010 | US7710232 Microelectromechanical tunable inductor |
| 05/04/2010 | US7710230 Transformer of light tube driving device and method for adjusting light tube using thereof |
| 05/04/2010 | US7710228 Electrical inductor assembly |
| 04/27/2010 | US7705704 Inductor structure |
| 04/27/2010 | US7705703 Signal distributing inductor |
| 04/22/2010 | WO2010044670A2 Method and device for a controllable coil and/or capacitor and/or circuit |
| 04/21/2010 | CN201440360U Reactor for accurate tuning used for passive filter |
| 04/20/2010 | US7701316 Integrated magnetic device |
| 04/20/2010 | US7701315 Inductive rotary transfer device |
| 04/13/2010 | US7696851 Transformer with separated bobbin |
| 04/01/2010 | US20100079229 Planar transformer and method of manufacturing |
| 03/31/2010 | CN201435287Y Adjustable inductor used for resonance circuit |
| 03/18/2010 | US20100066473 Programmable inductor |
| 03/17/2010 | CN201425872Y Reactor with inductance regulating function and filtering function |
| 03/16/2010 | US7679482 Inductor |
| 03/10/2010 | CN201421772Y High-frequency and high-power adjustable inductance coil device |
| 03/04/2010 | WO2009040807A3 Inductive power transmission platform |
| 03/02/2010 | US7671713 Integrated structure of passive elements in LLC resonance converter realized by flexible circuit boards |
| 02/24/2010 | EP2156446A1 Method for influencing the magnetic coupling between two bodies at a distance from each other and device for performing the method |
| 02/23/2010 | US7667563 Transformer |
| 02/18/2010 | US20100039092 Inductor assembly |
| 02/16/2010 | US7663462 Inductive rotating transmitter |
| 02/16/2010 | US7663459 Short-circuit indicator for electrical lines for power distribution |
| 02/14/2010 | CA2675407A1 Dual voltage switch |
| 02/14/2010 | CA2675406A1 Tap changer switch |
| 02/03/2010 | CN101640103A Adjusting system of electronic parameters and device |
| 02/02/2010 | US7656262 Balun transformer, mounting structure of balun transformer, and electronic apparatus having built-in mounting structure |
| 01/27/2010 | CN101636800A Shielded power coupling device |
| 01/21/2010 | WO2009129239A3 Variable width transverse flux electric induction coils |
| 01/20/2010 | CN201387785Y Box substation type magnetic control reactor |
| 01/12/2010 | US7646279 Apparatus for supplying energy to a load and a related system |
| 01/12/2010 | US7646277 Ignition coil |
| 01/05/2010 | US7642888 Electric reactor of controlled reactive power and method to adjust the reactive power |
| 12/30/2009 | CN101615482A Continuous adjustable iron-core reactor |
| 12/29/2009 | US7639110 Inductively powered apparatus |
| 12/23/2009 | WO2009152662A1 Self power-acquiring quickly responsive controllable electric reactor |
| 12/23/2009 | CA2727976A1 Self power-acquiring quick-responsive controllable reactor |
| 12/15/2009 | US7633356 Tunable-inductance thin-layered superconductor components, method for the production thereof and devices including said components |
| 12/03/2009 | US20090295523 Rotating Transformer |
| 12/03/2009 | DE102008064640A1 Induktivität und Anordnung Inductance and arrangement |
| 12/03/2009 | DE102008024602A1 Controllable inductance optionally used in non-contacting, medium power transmission system, includes main winding and control windings on core with air gap |
| 12/02/2009 | CN101593608A Induction adjusting filter reactor |
| 12/02/2009 | CN100565724C Variable inductor |
| 11/26/2009 | DE102008023953A1 Manually operated actuating device for use as control element, particularly switch and for operation of switchgear cabinets, has actuating element formed for manual movement along movement direction relative to stationary section |
| 11/19/2009 | WO2009138089A1 Inductive input device |
| 10/27/2009 | US7608975 Piezoelectrically-controlled integrated magnetic device |
| 10/22/2009 | WO2009129239A2 Variable width transverse flux electric induction coils |
| 10/22/2009 | DE102009017081A1 Bedienelement Control element |
| 10/21/2009 | EP2109866A2 Shielded power coupling device |
| 10/20/2009 | US7605681 Transformer |
| 10/06/2009 | US7598836 Multilayer winding inductor |
| 09/23/2009 | CN101539816A Electromagnetic pen, electromagnetic signal transmitting method, processing method, device and equipment |
| 08/27/2009 | US20090212758 Method and apparatus for power conversion with wide input voltage range |
| 08/19/2009 | EP2091054A2 An electromagnetic current limiter device |
| 08/19/2009 | CN201294504Y Complementary type pulse-forming network for generating high-voltage impulse |
| 08/13/2009 | US20090201113 Integrated inductor structure and method of fabrication |
| 08/11/2009 | US7573363 Communication transformer for power line communication |
| 08/06/2009 | US20090195343 Planar inductor |
| 07/30/2009 | US20090189725 On-chip integrated voltage-controlled variable inductor, methods of making and tuning such variable inductors, and design structures integrating such variable inductors |
| 07/29/2009 | CN201281997Y Arc welding arrangement |
| 07/29/2009 | CN101496121A Inductive sensor |
| 07/23/2009 | US20090185658 Contactless power and data transmission apparatus |
| 07/21/2009 | US7562432 Method for manufacturing magnetostrictive torque sensor |
| 07/16/2009 | WO2009089261A1 Electrically variable inductor, associated tunable filter and methods |
| 07/16/2009 | CA2711310A1 Electrically variable inductor, associated tunable filter and methods |
| 07/15/2009 | CN201274211Y Current regulator for electric welding machine |
| 07/09/2009 | US20090174501 Electronically variable inductor, associated tunable filter and methods |
| 07/09/2009 | US20090174493 Adjustable inductor and wideband voltage controlled oscillator |
| 07/08/2009 | CN201270182Y Dry type hollow series connection tunable reactor |
| 07/08/2009 | CN101479815A Electricity generating apparatus utilizing a single magnetic flux path |
| 06/25/2009 | US20090160424 High-voltage power supply device and image forming apparatus having same |
| 06/24/2009 | CN101465194A On-load adjustable stepless voltage-stabilizing transformer |
| 05/20/2009 | CN101434248A Series cab signal two-way receiver coil |
| 05/13/2009 | CN201237963Y Iron core type reactor for high tension inflation adjustable test |
| 05/06/2009 | CN201234141Y Electricity quality intelligent monitoring and resonating device |
| 05/06/2009 | CN101425358A Lightning current waveform forming inductor |
| 05/05/2009 | US7528692 Voltage stress reduction in magnetics using high resistivity materials |
| 04/29/2009 | CN100483574C High-frequency decimal inductance box |
| 04/23/2009 | WO2006116330A3 Monitoring scan mirror motion in electro-optical readers and image projectors |
| 04/23/2009 | DE102007049978A1 Differenzialtauchankeraufnehmer aus Metallen unterschiedlicher magnetischer Permeabilität Differential diving Anke Rauf taker of metals of different magnetic permeability |
| 04/22/2009 | CN101413808A Transformer type sensor |
| 04/21/2009 | US7521932 Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils |
| 04/16/2009 | DE10311071B4 Magnetanordnung Magnet assembly |
| 04/15/2009 | EP2047606A2 Dual inductor circuit for multi-band wireless communication device |
| 04/09/2009 | WO2009046265A1 Energy generation apparatus and methods based upon magnetic flux switching |
| 04/07/2009 | US7513170 Magnetic shear force sensor |
| 04/02/2009 | WO2005028685A3 Multi-stable magnetic article |
| 04/01/2009 | EP2041760A2 Inductive sensor |
| 03/31/2009 | US7511475 Mobile member speed sensor |