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Class Information
Number: 336/219
Name: Inductor devices > Core insulation (e.g., between core parts)
Description: Inductor devices comprising a core built up of elements of magnetic material separated from each other by elements of electrically insulating material. Laminated cores with electrical insulation between the magnetic laminations of the core are in this subclass.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8624697 Assembling magnetic component Jan. 7, 2014
8610532 Corrosion-resistant coating system for a dry-type transformer core Dec. 17, 2013
8552708 Monolithic DC/DC power management module with surface FET Oct. 8, 2013
8497756 Reactor core and reactor Jul. 30, 2013
8450830 Forming a ferromagnetic alloy core for high frequency micro fabricated inductors and transformers May. 28, 2013
8427272 Method of reducing audible noise in magnetic cores and magnetic cores having reduced audible noise Apr. 23, 2013
8421274 Wireless energy transfer system Apr. 16, 2013
8358191 Inductor and method for production of an inductor core unit for an inductor Jan. 22, 2013
8325002 Power inductor structure Dec. 4, 2012
8284009 Transformer Oct. 9, 2012
8198973 Transformer Jun. 12, 2012
8183972 Oil filled transformer with spacers and spacers for separating and supporting stacked windings May. 22, 2012
8093981 Laminated inductor with enhanced current endurance Jan. 10, 2012
7679483 Core for reactor Mar. 16, 2010
7456724 Electrical steel sheet for low-noise transformer and low-noise transformer Nov. 25, 2008
7394342 Ignition coil and manufacturing method and apparatus thereof Jul. 1, 2008
7266882 Method of manufacturing a miniaturized three- dimensional electric component Sep. 11, 2007
7210218 Method for fabricating electrical core sheet assemblies May. 1, 2007
7068135 Stick-type ignition coil having improved structure against crack or dielectric discharge Jun. 27, 2006
7068138 High Q factor integrated circuit inductor Jun. 27, 2006
6977574 Stick-type ignition coil having improved structure against crack or dielectric discharge Dec. 20, 2005
6967559 Transformer for high-voltage X-ray generator Nov. 22, 2005
6933828 Devices and methods for protecting windings around a sharp edged core Aug. 23, 2005
6919789 Connecting structure of choke coil Jul. 19, 2005
6914513 Materials system for low cost, non wire-wound, miniature, multilayer magnetic circuit components Jul. 5, 2005
6880228 Method for manufacturing a three-phase transformer Apr. 19, 2005
6834644 Circular ignition coil assembly Dec. 28, 2004
6694958 Ignition device for internal combustion engine Feb. 24, 2004
6617950 Common mode/differential mode choke Sep. 9, 2003
6600402 Bobbins, transformers, magnetic components, and methods Jul. 29, 2003
6593836 Bobbins, transformers, magnetic components, and methods Jul. 15, 2003
6411188 Amorphous metal transformer having a generally rectangular coil Jun. 25, 2002
6259347 Electrical power cooling technique Jul. 10, 2001
5955201 Inorganic/organic insulating coating for nonoriented electrical steel Sep. 21, 1999
5880662 High self resonant frequency multilayer inductor and method for making same Mar. 9, 1999
5861791 Ignition coil with non-filtering/non-segregating secondary winding separators Jan. 19, 1999
5844461 Isolation transformers and isolation transformer assemblies Dec. 1, 1998
5793272 Integrated circuit toroidal inductor Aug. 11, 1998
5717373 Corner insulation for toroidal (annular) devices Feb. 10, 1998
5677661 Rotary transformer Oct. 14, 1997
5658660 Magnetic core coated with tin free electrodeposition coatings Aug. 19, 1997
5658668 Electromagnetic steel sheet and a core made therefrom Aug. 19, 1997
5639566 Magnetic core Jun. 17, 1997
5546065 High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances Aug. 13, 1996
5528205 Integrated electromagnetic interference filter Jun. 18, 1996
5359314 Core and coil assembly for an amorphous-steel cored electric transformer Oct. 25, 1994
5331304 Amorphous metal transformer core Jul. 19, 1994
5268663 Ignition coil assembly directly applied to ignition plug for internal combustion engine Dec. 7, 1993
5250923 Laminated chip common mode choke coil Oct. 5, 1993
5248952 Transformer core and method for finishing Sep. 28, 1993

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