| Patents for H01F 37 - Fixed inductances not covered by group (2,202) |
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| 07/31/1990 | US4945332 Noise suppression inductor |
| 06/13/1990 | CN1043036A 电感器组件 Inductor assembly |
| 05/30/1990 | EP0370681A2 Inductor assembly |
| 05/21/1990 | CA2001773A1 Inductor assembly |
| 05/08/1990 | US4924200 Split bobbin and coil device |
| 03/20/1990 | US4910482 AC line filter |
| 02/21/1990 | CN1039927A Alternating current ballast |
| 02/20/1990 | US4902998 Inductor assembly with cooled winding turns |
| 01/09/1990 | US4893069 Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads |
| 12/05/1989 | US4885559 Electric noise absorber |
| 09/26/1989 | CA1261415A1 High current inductor winding arrangement |
| 08/24/1989 | WO1989007828A1 Choke coil |
| 06/29/1989 | DE3743222A1 Cooled inductor coil for converter installations |
| 05/31/1989 | CN2038700U Low-voltage ballast with quickly starting feature |
| 05/23/1989 | US4833437 Magnetic core inductor |
| 04/25/1989 | US4825185 Electric noise absorber |
| 04/20/1989 | DE3732965A1 Inductor or transformer, especially for use as a ballast for gas-discharge lamps |
| 03/23/1989 | DE3730462A1 Adjustable inductance having a plunger-type core arranged axially on one side |
| 03/15/1989 | CN2034325U Stable voltage transformer with dc closed magnetic circuit |
| 01/04/1989 | CN2030400U Ballast for controlling three fluorescent lamps |
| 12/29/1988 | DE3717717A1 Current-compensated annular-core inductor having increased stray inductance |
| 12/13/1988 | US4791543 High power switched power supply |
| 12/07/1988 | CN87215153U 荧光灯镇流器 Fluorescent Lamp Ballasts |
| 11/17/1988 | DE3715488A1 Coil for inductive application |
| 10/18/1988 | US4779068 Noise suppression inductor |
| 10/04/1988 | US4775848 High-voltage valve reactor, specifically for high-voltage direct-current transmission systems |
| 09/22/1988 | DE3708226A1 Inductor having two coils |
| 07/13/1988 | CN85103560B Three-phase saturating reactor with seven legged laminated core |
| 05/17/1988 | US4745536 Reactor for circuit containing semiconductor device |
| 03/24/1988 | DE3716415A1 Rectifier circuit having a storage inductor which is connected to the load circuit to smooth the pulsating load currents on the output side by means of its load winding |
| 03/15/1988 | US4731297 Laminated components of open magnetic circuit type |
| 03/02/1988 | EP0257179A1 Electric noise absorber |
| 02/16/1988 | US4725768 Switching regulated power supply employing an elongated metallic conductive inductor having a magnetic thin film coating |
| 01/07/1988 | DE3621573A1 Current-compensated spark-suppression inductor (radio-suppression inductor) |
| 10/14/1987 | EP0240736A1 Ballast device or transformer, especially for discharge lamps |
| 10/07/1987 | EP0239786A2 Choke for a high power switching power supply |
| 06/03/1987 | EP0223954A1 Inductance for a controlled rectifier, particularly for high voltage direct current transmission installations |
| 04/30/1987 | DE3533323A1 Inductor coil having at least one iron core whose cross-section is in the form of a circular ring |
| 03/25/1987 | CN86202733U Ballst for two tubes |
| 03/19/1987 | DE3532643A1 Drainage coil for a high-current converter transformer |
| 03/11/1987 | CN85204357U Circuit wave-drag device |
| 01/28/1987 | EP0209742A1 Current-compensated radio interference suppression choke |
| 12/23/1986 | US4631471 Inductor apparatus for application of ferroresonant regulators |
| 12/09/1986 | CA1215147A1 Polyphase assembly |
| 12/02/1986 | US4626815 Polyphase assembly |
| 11/05/1986 | CN86200578U Alternating-current electromagnetic compacting machine with muting |
| 10/01/1986 | EP0196004A2 Inductor apparatus for application to ferroresonant regulators |
| 08/26/1986 | CA1210464A1 Iron powder encapsulated liquid cooled reactors |
| 07/29/1986 | US4603314 Inductor |
| 05/21/1986 | EP0181480A1 Electronic ballast system for gas discharge tubes |
| 03/11/1986 | CA1201628A1 Method of coating an inductive stabilization ballast with an insulating layer, and inductive stabilization ballast coated with an insulating layer by means of this method |
| 01/28/1986 | CA1199961A1 Electronic ballast system |
| 10/10/1985 | CN85103560A Three-phase saturating reactor with seven legged laminated core |
| 07/23/1985 | US4531108 Three-phase choke with a five-leg core |
| 04/30/1985 | US4514713 Inductive ballast coated with an insulation layer and method of coating the ballast |
| 04/10/1985 | EP0136809A1 Polyphase assembly for controlling A.C. devices |
| 03/05/1985 | US4503361 Electronic ballast system |
| 01/16/1985 | EP0131222A1 Choke for obtaining high magnetic-induction rates |
| 12/27/1984 | EP0129118A1 Three-phase reactor with an annular yoke member at the lower and upper side |
| 11/27/1984 | US4485368 Electrical shunt reactor coil |
| 09/05/1984 | EP0117515A1 Reactor having a plurality of coaxially disposed windings |
| 09/05/1984 | EP0117460A1 Three-phase choke with five-legged magnetic core |
| 07/17/1984 | US4460883 Stabilization ballast for operating a gas and/or vapor discharge lamp |
| 04/04/1984 | EP0104558A1 Inductance with windings around core discs |
| 03/27/1984 | CA1164540A1 Electrical power line shunt coil |
| 12/06/1983 | US4419648 Current controlled variable reactor |
| 11/15/1983 | US4415874 Electric shunt inductance winding for an electricity power transport line |
| 10/26/1983 | EP0092204A2 Inductance coil |
| 08/10/1983 | EP0085505A1 Electronic ballast system for gas discharge tubes |
| 06/15/1983 | EP0081153A1 Electrical shunt reactor |
| 04/05/1983 | CA1144246A1 Electrical reactor with foil windings |
| 03/30/1983 | EP0075164A1 Inductance with coils around magnetic core discs |
| 09/29/1982 | EP0061225A1 Stabilization ballast for operating a gas and/or vapour discharge lamp |
| 08/31/1982 | US4347489 Variable three-phase inductor |
| 08/31/1982 | CA1130907A1 High-voltage installation |
| 07/20/1982 | CA1128154A1 Reactor |
| 06/16/1982 | EP0053691A1 Choke for high current transformers |
| 03/17/1982 | EP0047266A1 Low-loss reactor |
| 01/13/1982 | EP0043523A1 Electrical shunt reactor for an electric power transmission line, and method of making such reactor |
| 12/22/1981 | US4307364 Electrical reactor with foil windings |
| 12/15/1981 | US4306209 Sound-proofed choke |
| 11/25/1981 | EP0040262A1 Electrical reactor with foil windings |
| 11/17/1981 | US4301437 Impedance coil core |
| 11/03/1981 | US4298853 Compact high voltage shunt reactor |
| 09/17/1981 | WO1981002648A1 Low-loss reactor |
| 08/11/1981 | CA1106926A1 Reactor |
| 07/07/1981 | US4277639 High-voltage installation including heavy electrical apparatus suspended by insulator means |
| 12/16/1980 | US4240057 Inductive element construction, particularly fluorescent lamp ballast |
| 11/25/1980 | US4236200 Semiconductor circuit having a series-connected reactor |
| 10/07/1980 | US4227166 Reactor |
| 09/03/1980 | EP0014914A1 Choke coil for limiting short circuit currents |
| 06/25/1980 | EP0012739A1 Choke |
| 06/17/1980 | US4208616 Inductive stabilization ballast for a discharge lamp |
| 06/12/1979 | US4158123 Series reactor |
| 04/17/1979 | CA1052875A1 Series reactor |
| 01/16/1979 | CA1046599A1 Transmission line frequency separation filter |
| 08/22/1978 | US4109223 Multiple choke assembly |
| 07/11/1978 | US4100520 Devices for controlling A.C. motors |
| 06/28/1977 | US4032874 Reactor core |
| 05/17/1977 | US4024479 HF signal transmission device |