Patents for H01F 3 - Cores, yokes or armatures (3,764)
12/1995
12/20/1995EP0688028A1 Electromagnetic coupler
11/1995
11/15/1995CN2212827Y Winded iron core
11/02/1995WO1995029493A1 Choke coil
10/1995
10/26/1995WO1995028722A1 Improvements relating to transformers/inductors
10/24/1995US5461555 Flyback converter having a high efficiency irrespective of magnitude of a load
10/18/1995EP0677856A1 Container for storing an annular magnetic core
10/04/1995EP0674803A1 Air-cooled magnetic cores
09/1995
09/20/1995CN1108790A 电感元件 Inductive element
09/06/1995EP0670077A1 Improved edge coating for amorphous ribbon transformer cores
08/1995
08/22/1995US5443664 Surge current-suppressing circuit and magnetic device therein
08/15/1995US5441783 Edge coating for amorphous ribbon transformer cores
08/08/1995US5440225 Core for coil device such as power transformers, choke coils used in switching power supply
08/02/1995EP0665374A1 Electromagnet for controlling the metering valve of a fuel injector
08/02/1995EP0632929A4 Producing magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions.
07/1995
07/19/1995CN1105394A Nanocrystalline alloy having excellent pulse attenuation characteristics, method of producing the same, choke coil, and noise filter
06/1995
06/28/1995EP0660339A1 Improvement relating to transformers of the closed ferrite magnetic circuit type
06/20/1995US5426409 Current controlled variable inductor
06/14/1995EP0657063A1 Adjustable-impedance choke coil.
06/06/1995US5422620 Transformer
05/1995
05/31/1995EP0655754A1 Inductance element
05/23/1995US5418513 Transformer core in transformer circuit
05/09/1995US5414401 High-frequency, low-profile inductor
05/02/1995CA2009079C Wound magnetic core
04/1995
04/12/1995EP0647180A1 Thermoplastic coated magnetic powder compositions and methods of making same
03/1995
03/30/1995WO1995008510A1 Method and apparatus for treating fluid with radio frequency signals
03/29/1995CN1100838A Magnetic core for pulse transformer and
03/21/1995US5400005 Toroidal transformer with magnetic shunt
03/15/1995CN1100231A Sintered transformer of inductor core of nizn ferrite material
02/1995
02/28/1995US5393984 Magnetic deflection system for ion beam implanters
02/28/1995US5393484 Injection molding; degreasing shrinkage inhibition
02/01/1995EP0637038A2 Magnetic core for pulse transformer and pulse transformer made thereof
02/01/1995EP0380582B1 Choke coil
01/1995
01/25/1995EP0635853A2 Nanocrystalline alloy having pulse attenuation characteristics, method of producing the same, choke coil, and noise filter
01/11/1995EP0632929A1 Producing magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions
01/03/1995US5378966 Flux captivated emission controlled flyback transformer
12/1994
12/28/1994EP0631358A2 Device for producing magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions
11/1994
11/17/1994EP0624886A1 Sintered transformer or inductor core of NiZn ferrite material
11/15/1994US5364477 Iron rich metallic glasses having high saturation induction and superior soft ferromagnetic properties at high magnetization rates
11/08/1994US5362332 Process for producing a magnet base for printing head of a wire dot printer
11/02/1994CN2181735Y Single-T and double-L combination core plate
10/1994
10/25/1994US5359313 Step-up transformer
09/1994
09/22/1994DE4338655A1 Magnet base for printing head of needle (matrix) printers and method for its production
09/01/1994DE4306128A1 ISDN transformer having a composite magnetic core
08/1994
08/24/1994EP0612083A1 Manganese-zinc ferrite
07/1994
07/07/1994WO1994015346A1 Air-cooled magnetic cores
07/06/1994CN1089058A Improved edge coating for amorphous ribbon transformer cores
06/1994
06/29/1994EP0603909A1 Microwave tubular core transformer
05/1994
05/26/1994WO1994011890A1 Improved edge coating for amorphous ribbon transformer cores
05/26/1994CA2148841A1 Improved edge coating for amorphous ribbon transformer cores
05/24/1994US5315279 Coil device
05/24/1994US5315278 Filament magnetic flux circuit
05/18/1994EP0349604B1 Transformer
05/17/1994US5312503 Laminated magnetic core and method of manufacturing same
05/10/1994US5311028 System and method for producing oscillating magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions
04/1994
04/26/1994US5306524 Thermoplastic coated magnetic powder compositions and methods of making same
03/1994
03/25/1994CA2079056A1 Power core
03/23/1994CA2106110A1 Laminated articles and methods of making the same
03/22/1994US5296049 Glassy alloys
03/17/1994WO1994006131A1 Adjustable-impedance choke coil
03/11/1994EP0647180A4 Thermoplastic coated magnetic powder compositions and methods of making same.
03/03/1994DE4228642A1 Verfahren zur Impedanz-Einstellung einer Drossel Method for impedance setting a throttle
01/1994
01/26/1994EP0579962A1 Choke coil
01/05/1994EP0577334A2 Partial gap magnetic core apparatus
01/03/1994CA2096358A1 Partial gap magnetic core apparatus
12/1993
12/07/1993US5268663 Ignition coil assembly directly applied to ignition plug for internal combustion engine
12/01/1993EP0528883B1 Magnetic cores utilizing metallic glass ribbons and mica paper interlaminar insulation
12/01/1993EP0482064B1 Iron-rich metallic glasses having high saturation induction and superior soft ferromagnetic properties at high magnetization rates
11/1993
11/24/1993EP0571242A1 Magnetic circuit with airgap, particularly for ballasts for discharge lamps and its manufacturing method
10/1993
10/12/1993US5252148 Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same
09/1993
09/23/1993DE4208706A1 Ignition coil for IC engine - has circular inner core on which primary and secondary windings are wound
09/07/1993US5243248 Electric motor having a low loss magnetic flux return path
09/07/1993US5242760 Magnetic ribbon and magnetic core
09/02/1993WO1993017445A1 Producing magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions
09/01/1993EP0557689A2 Method for manufacturing a magnetic pulse generator
08/1993
08/31/1993US5240541 Method of fabricating a laminated strip of amorphous metal
08/19/1993WO1993016479A1 Wire wound core
08/10/1993US5235488 Wire wound core
07/1993
07/29/1993CA2088207A1 Method for manufacturing a magnetic pulse generator
07/14/1993CA2086897A1 Toroidal transformer and method for making
06/1993
06/22/1993US5221892 Flux compression transformer
06/17/1993DE4241689A1 Step=up transformer with sepd. prim. and sec. windings - arranged end=to=end along axis of winding sleeve and electromagnetically coupled by core
05/1993
05/11/1993US5210514 Coil device
04/1993
04/21/1993EP0538073A2 Process for producing sintered body and magnet base
04/01/1993DE3844837C2 Composite body producing impulse voltages for use in security wire
03/1993
03/31/1993CN1020216C Making method of cutting amorphous inductive magnetic core
03/30/1993US5198137 Thermoplastic coated magnetic powder compositions and methods of making same
01/1993
01/19/1993US5181004 Solenoid coil assembly
12/1992
12/22/1992CA1311808C Autoregulating multi contact induction heater
12/16/1992EP0518421A1 Inductive device
11/1992
11/26/1992WO1992020522A1 Thermoplastic coated magnetic powder compositions and methods of making same
11/03/1992US5160447 Inner yoke of linear voice coil motor; ferromagnetic powder and binder with specified voids
10/1992
10/20/1992US5156341 Electromagnetic type fuel injection valve
10/20/1992CA1309149C Wire-core transformer
10/13/1992US5155676 Electromagnetic device
10/13/1992US5155461 Solenoid stator assembly for electronically actuated fuel injectors and method of manufacturing same
09/1992
09/23/1992EP0505194A1 Sintered core for an electromagnetic contactor with controlled closing velocity
09/22/1992CA2063680A1 Molded magnetic contactors
09/22/1992CA1307823C Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
09/16/1992EP0503081A1 Magnetic core
08/1992
08/11/1992US5138546 Sintered transformer core of mnzn-ferrite and a transformer comprising such a core
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