| Patents for H01F 37 - Fixed inductances not covered by group (2,202) |
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| 11/02/1995 | WO1995029493A1 Choke coil |
| 09/20/1995 | CN1108790A 电感元件 Inductive element |
| 09/20/1995 | CN1029812C Choke coil device for electromagnetic range |
| 08/29/1995 | US5446340 Discharge lamp having a lamp envelope with a textured sealed region and method of making same |
| 08/23/1995 | CN2206007Y Self-change impedance compensating starter |
| 08/01/1995 | US5438182 Choke coil apparatus for an electromagnetic range |
| 07/19/1995 | CN1105394A Nanocrystalline alloy having excellent pulse attenuation characteristics, method of producing the same, choke coil, and noise filter |
| 07/05/1995 | CN2203014Y Noiseless energy-saving ballast |
| 06/06/1995 | US5422619 Common mode choke coil |
| 05/31/1995 | EP0655754A1 Inductance element |
| 04/05/1995 | EP0646947A1 Discharge lamp having a lamp envelope with a textured sealed region and method of making same |
| 04/05/1995 | CA2133508A1 Discharge lamp having a lamp envelope with a textured sealed region and method of making same |
| 03/22/1995 | CN2192945Y Anti-explosive ballast |
| 02/21/1995 | US5392017 Choke coil comprising a bead of a soft-magnetic material |
| 02/01/1995 | EP0380582B1 Choke coil |
| 01/25/1995 | EP0635853A2 Nanocrystalline alloy having pulse attenuation characteristics, method of producing the same, choke coil, and noise filter |
| 12/27/1994 | US5376911 Choke coil |
| 11/24/1994 | WO1994027304A1 Liquid-cooled valve choke |
| 10/12/1994 | CN2179684Y Self-starting ballast |
| 10/06/1994 | DE4410956A1 Drosselspule für eine Schaltungsanordnung, Wechselrichter mit einer solchen Drosselspule und Verfahren zu ihrer Herstellung Choke coil for a circuit arrangement, the inverter having such a reactor and methods for their preparation |
| 10/06/1994 | DE4311126A1 Stromkompensierte Mehrfachdrossel in Kompaktbauweise Current-compensated multiple throttle in a compact design |
| 10/06/1994 | DE4311125A1 EMV-Filter für Anlagen, Systeme und geschirmte Räume EMC filter for plants, systems and Shielded Rooms |
| 06/29/1994 | CN2170566Y Even number full transposition type combined equalized current reactor and wave resistance apparatus |
| 06/22/1994 | CN2169907Y Plane wave reactor |
| 05/18/1994 | CN2165600Y Ballast for parallel multi-tube fluorescent lamp |
| 05/18/1994 | CN2165599Y Energy-saving ballast for fluorescent lamp |
| 05/18/1994 | CN2165598Y Ballast for energy-saving self-glow starting fluorescent lamp |
| 05/11/1994 | CN2164627Y Energy-saving ballast without starter for thin tube high-effect fluorescent lamp |
| 03/22/1994 | US5296830 Choke coil |
| 02/23/1994 | EP0583644A1 Choke |
| 02/23/1994 | CN2157584Y Clip induction ballast core |
| 02/23/1994 | CN2157582Y Surface adhesion power supply inductor |
| 02/09/1994 | EP0582218A1 Choke coil for a converter |
| 01/26/1994 | EP0579962A1 Choke coil |
| 01/13/1994 | DE4215503A1 Electrically inductive system such as motor with self induction effect - produced by either permanent magnet insert or by superconducting magnetic elements built into core assembly |
| 01/05/1994 | CN2152365Y Incandescent light life-prolonging protector |
| 01/05/1994 | CN2152286Y Dry hollow parallel tube type copper anti-electric shock reactor |
| 12/22/1993 | CN2150700Y Electronic inductive type fluorescence ballast |
| 12/22/1993 | CN2150699Y Fluorescence lamp ballast |
| 12/08/1993 | CN1079330A Method for treating end face of pin-free ceramic inductor |
| 11/17/1993 | CN2146772Y Omnibearing magnetic screen reactor |
| 10/28/1993 | DE4212443A1 Operation and control unit for inductive systems e.g. intermittent operation electric motors - includes pulse transmitter and inductive system with control pulses produced by discharge of capacitor or similar unit |
| 10/05/1993 | US5250923 Laminated chip common mode choke coil |
| 09/15/1993 | CN2142255Y Economic inductive ballast |
| 09/01/1993 | CN2141634Y Energy-saving high-effect ballast for fluorescent lamp |
| 07/29/1993 | DE4202021A1 Utility or mains supply water-cooled choke with coolant separated from coil - has partial coils arranged in toroid with their windings in coolant housing and contacts through wall and connected outside |
| 06/23/1993 | CN2137070Y Electronic ballast |
| 05/19/1993 | CN2133912Y Ballast for energy-saving high-efficiency high-pressure gas escaping lamp |
| 05/12/1993 | EP0540958A1 Toroidal inductance |
| 05/12/1993 | CN2133119Y Induction ballast with super-heat protector |
| 05/05/1993 | CN2132258Y Self-starting energy-saving ballast |
| 04/07/1993 | CN1070786A Choke coil device for electromagnetic range |
| 02/25/1993 | DE4227757A1 Inductance device for filter of electromagnetic device e.g. magnetron - has ferrite cores formed from multi-facet bars with air cooling channel along centre that are inserted into coils |
| 02/17/1993 | CN1069156A High power factor double-tube fluorescent lamp ballast |
| 12/30/1992 | CN2126460U Integral iron core reactor |
| 12/09/1992 | CN2124504U Ballast for gas-discharge lamp |
| 11/25/1992 | CN2123112U High-current filter reactor |
| 11/11/1992 | CN2121743U Fluorescent lamp ballast without external hood |
| 10/13/1992 | US5155676 Electromagnetic device |
| 10/06/1992 | CA1308438C Inductor apparatus for application to ferroresonant regulators |
| 09/23/1992 | EP0504610A1 Device for reducing current peaks during starting of an asynchronous motor |
| 09/16/1992 | CN2116328U Long-service and energy-saving fluorescent lamp controller |
| 09/02/1992 | CN2114881U Dry hollow reactance |
| 08/12/1992 | CN1017846B Shunt reactor common type transformer |
| 07/28/1992 | US5134344 Ballast circuits for gas discharge lamps |
| 07/14/1992 | US5130516 Choke for tig welding machines or plasma cutting installations |
| 05/26/1992 | US5117215 Inductive device |
| 04/28/1992 | US5109208 Current limiting electrical reactor |
| 04/21/1992 | CA1299256C Ac line filter |
| 03/18/1992 | CN2099425U Ballast of fluorescent lamp |
| 03/04/1992 | CN2098080U Input inducer of switch power supply transverter |
| 02/12/1992 | CN2096117U Day light lamp ballast |
| 02/05/1992 | EP0469671A1 Choke coil comprising a bead of a softmagnetic material |
| 10/23/1991 | EP0452992A2 Electric noise absorber |
| 10/16/1991 | EP0451628A1 Choke-coil/transformer combination for operating high pressure metal vapor lamps of vehicle electrical systems |
| 10/02/1991 | CN2086034U Durable energy-saving ballast |
| 10/02/1991 | CN2085997U Iron-core reactor with gap in iron yoke |
| 10/01/1991 | CA1290014C Ferroresonant three-phase constant ac voltage transformer |
| 09/19/1991 | DE4008424A1 Inductance coil for an inverter - has coil former constructed from four sections with corner inserts |
| 09/11/1991 | EP0445704A2 Reactor coil, particularly for operating high-pressure metal vapour lamps |
| 09/10/1991 | US5047692 Integrated tuning capacitor network and heat sink for an electrodeless high intensity discharge lamp ballast |
| 08/07/1991 | EP0440381A2 Improvements relating to electrodeless high intensity discharge lamps |
| 08/07/1991 | CN2082505U Inductance-capacity ballast of fluorescent lamp with single end inner start |
| 07/31/1991 | CN2082061U Magnetic-leakage pulse ballast with autoformer |
| 07/17/1991 | CN2081136U Induction ballast iron core with new structure for fluorescent lamp |
| 07/03/1991 | CN2080215U Fluorescent lamp ballast with new structure |
| 06/05/1991 | CN2078484U Voltage-stabilizing transformer |
| 05/30/1991 | WO1991007766A1 Impedance bonds |
| 05/29/1991 | CN2078068U Inductive type ballast |
| 05/08/1991 | CN2076734U High-voltage sodium lamp ballast |
| 04/10/1991 | CN2074931U Low-voltage series reactance |
| 02/06/1991 | CN2070945U Hf magnetic resonance vibration voltage-stabilizing transformer |
| 01/16/1991 | CN1048626A Shunt reactor common type transformer |
| 01/09/1991 | EP0406555A1 Shared shunt reactor type transformer |
| 01/08/1991 | US4983932 Electric noise absorber |
| 11/13/1990 | US4970476 Electric noise absorber using a granular or liquid magnetic substance |
| 10/17/1990 | EP0392834A1 Ballast circuits for gas discharge lamps |
| 10/16/1990 | US4964013 Electric noise absorber |
| 09/19/1990 | EP0387841A2 Noise-damping bobbin arrangement for damping symmetric and asymmetric noise currents |
| 08/09/1990 | DE3901792A1 Toroidal (ring) core made of ferrite or iron powder |