| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
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| 02/16/1999 | US5872163 Liquid epoxy resin composition containing wollastonite and calcite |
| 02/16/1999 | US5871673 Insulating liquids with polyol esters and perfluoropolyethers for nonflammable liquids |
| 02/16/1999 | US5871662 Sintered transformer or inductor core of nizn ferrite material |
| 02/11/1999 | DE19802473A1 Multilayer-Planarinduktivität und Verfahren zum Herstellen einer solchen Multi-layer planar inductance coil and methods for producing such |
| 02/10/1999 | EP0896346A1 Methods of manufacturing a magnetic device and tool for manufacturing the same |
| 02/10/1999 | CN1207827A Apparatus and method for connecting primary conductive lines of flexible transformer |
| 02/10/1999 | CN1207695A Electromagnetic joining or welding of metal objects |
| 02/10/1999 | CN1042070C Method and apparatus for making packets of amorphous steel strip for transformer core manufacture |
| 02/10/1999 | CN1042069C Transformer core comprising group of amorphous steel strips wrapped about core window |
| 02/09/1999 | US5870011 Line filter |
| 02/09/1999 | US5867891 Continuous method of manufacturing wire wound inductors and wire wound inductors thereby |
| 02/04/1999 | DE19829845A1 Ignition coils for internal combustion engines |
| 02/03/1999 | EP0895258A1 Process of mounting a winding on a multi-leg core |
| 02/03/1999 | CN2306556Y Epoxy resin vacuum poured copper conductor square coil transformer |
| 02/03/1999 | CN2306555Y General dry transformer for mine |
| 01/27/1999 | CN2305742Y Insulation cover arrangement of transformer's coil |
| 01/27/1999 | CN1206491A Choke coil |
| 01/27/1999 | CN1206207A Resin mold transformer, and its transfer method |
| 01/26/1999 | US5863455 Colloidal insulating and cooling fluid |
| 01/21/1999 | WO1999003118A1 Diode-split high-voltage transformer |
| 01/21/1999 | WO1999003117A1 Multi-layer planar inductance coil and a method for producing the same |
| 01/21/1999 | WO1999003116A1 Coil |
| 01/21/1999 | WO1999002467A1 Colloidal insulating and cooling fluid |
| 01/21/1999 | CA2296379A1 Colloidal insulating and cooling fluid |
| 01/20/1999 | EP0891625A1 Electrical apparatus having electrical conductors mounted in electrical insulation |
| 01/20/1999 | EP0640240B1 Strip conductor for transformers |
| 01/20/1999 | CN2304989Y Fully closed transformer with auxiliary oil tank |
| 01/20/1999 | CN1205526A Transformer |
| 01/20/1999 | CN1041765C Secondary winding bobbin for ignition coil for internal combustion engine |
| 01/19/1999 | US5861792 Coil component and method of stamping iron core used therefor |
| 01/19/1999 | US5861791 For an internal combustion engine |
| 01/19/1999 | US5861790 Stackable and cost-reduced transformer with embedded EMI filters |
| 01/14/1999 | WO1999001773A1 Electric current pick-up shoe |
| 01/14/1999 | WO1998039783A3 Low profile magnetic component with planar winding structure having reduced conductor loss |
| 01/14/1999 | DE19728875A1 High voltage transformer |
| 01/13/1999 | EP0889797A2 An electric drive system for vehicles |
| 01/13/1999 | CN2304176Y Strip-wound type iron-core of tranformer |
| 01/13/1999 | CN1204845A Flyback transformer |
| 01/13/1999 | CN1204844A Power transformer and method for manufacturing thereof |
| 01/12/1999 | US5859577 Transformer with laminated sheet cores |
| 01/07/1999 | WO1999000805A1 Method for impregnating amorphous metal transformer cores |
| 01/07/1999 | EP0889490A2 Current transformer for a metal-encapsulated gas-insulated high voltage installation |
| 01/07/1999 | EP0888662A2 Electromagnetic device |
| 01/07/1999 | EP0888661A2 An electric high voltage ac machine |
| 01/07/1999 | EP0888631A1 A method of producing an lc-circuit |
| 01/07/1999 | EP0888630A1 A method of producing an lc-circuit |
| 01/07/1999 | EP0888628A1 Transformer/reactor |
| 01/07/1999 | EP0888627A1 A dc transformer/reactor |
| 01/07/1999 | EP0888228A1 Control unit |
| 01/07/1999 | DE19821592A1 Electrical voltage distribution sub-station |
| 01/06/1999 | CN2303368Y Mild magnetic ferrite magnetic core |
| 01/06/1999 | CN1204130A Iron-core material iron-core and transformer for balancing-non-balancing transformer |
| 01/06/1999 | CN1041575C Sintered transformer of inductor core of NiZn ferrite material |
| 01/05/1999 | US5855723 Process for the adhesive bonding of ferrite pieces |
| 12/30/1998 | WO1998059531A1 Device for protecting an electric circuit against interface micro-discharges |
| 12/30/1998 | EP0888038A1 Surface mounted electronic parts and manufacturing method therefor |
| 12/30/1998 | EP0887856A1 Method of manufacturing electronic components |
| 12/30/1998 | EP0887815A1 Converter transformer |
| 12/30/1998 | EP0887547A1 Coil with horizontal secondary spool |
| 12/30/1998 | EP0886874A1 Device comprising an integrated coil |
| 12/30/1998 | CN1203692A Flexible coil winding structure of flyback transformer and manufacturing process thereof |
| 12/23/1998 | EP0886287A2 Bushing insulator |
| 12/23/1998 | EP0886286A2 High-voltage transformer and a vehicle-lamp lighting-on device using the same |
| 12/23/1998 | CN1202977A Flexible coil winding structure of flyback transformer and manufacturing process thereof |
| 12/23/1998 | CN1202711A Laterally inserting and mounting framework for isolating transformer |
| 12/23/1998 | CN1202708A Core assembly for coil units and method for producing the same |
| 12/17/1998 | WO1998057340A1 Coil to be mounted on substrate and structure mounting the same on substrate |
| 12/17/1998 | WO1998057338A1 Planar winding structure and low profile magnetic component having reduced size and improved thermal properties |
| 12/16/1998 | EP0884775A1 Electronic component and manufacturing method therefor |
| 12/16/1998 | EP0884741A1 Electronic component |
| 12/16/1998 | EP0795184A4 Planar pulse transformer |
| 12/16/1998 | CN1202265A Cylindrical coil winding structure of flyback transformer |
| 12/10/1998 | WO1998056018A2 Planar inductive devices |
| 12/10/1998 | WO1998056017A1 Method for evaluating deterioration of insulating paper |
| 12/10/1998 | WO1998056016A1 Inductive component |
| 12/09/1998 | EP0883222A1 Self-protected trip device for immersed electrical transformer |
| 12/09/1998 | EP0883144A2 Pressure assembly |
| 12/09/1998 | EP0746843A4 Global quieting system for stationary induction apparatus |
| 12/09/1998 | CN2300175Y 干式电力变压器 Dry type power transformers |
| 12/09/1998 | CN2300174Y Improvement of transformer iron core combined structure |
| 12/09/1998 | CN1201366A Printed circuit board |
| 12/09/1998 | CN1201246A Self-protection tripping mechanism for subway electric transformer |
| 12/09/1998 | CN1201243A Resin-mold coil |
| 12/09/1998 | CN1201138A Core group of linear displacement sensor and mfg. method therefor |
| 12/09/1998 | CN1041138C Multifunctional impedance matching tractive transformer |
| 12/08/1998 | US5847947 High voltage transformer |
| 12/08/1998 | US5847518 High voltage transformer with secondary coil windings on opposing bobbins |
| 12/03/1998 | WO1998054735A1 Device and method for cooling a planar inductor |
| 12/03/1998 | WO1998054733A2 Low profile pin-less planar magnetic devices and method of making same |
| 12/03/1998 | WO1998054498A1 Shield for pressure relief device |
| 12/03/1998 | DE19808592A1 Vorrichtung und Verfahren zum Kühlen einer Planarinduktivität Apparatus and method for cooling a planar inductance coil |
| 12/02/1998 | EP0881647A1 Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer |
| 12/02/1998 | CN2299380Y Air-cooling electric power transformer appts. |
| 12/02/1998 | CN2299379Y Coils protective hood of ballast and transformer |
| 12/02/1998 | CN1200585A Three phase non-disturbed type distribution transformer and switching combination arrangement |
| 12/02/1998 | CN1041031C Transformer for arc welder |
| 12/01/1998 | US5844461 Isolation transformers and isolation transformer assemblies |
| 12/01/1998 | US5844459 Magnet coil with means for assuring adjustment and firm seating of the coil body in a yoke ring |
| 11/26/1998 | WO1998053467A1 Ignition coil unit for engine and engine provided with plastic head cover |
| 11/26/1998 | WO1998053466A1 A combination apparatus of distribution transformer and switch |