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Class Information
Number: 336/215
Name: Inductor devices > Multiple magnetic paths > Three or more
Description: Subject matter wherein the number of independent and distinct closed loops of magnetic material is three or more.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8601673 Method of producing an inductor with a high inductance Dec. 10, 2013
8576037 Dual output autotransformer Nov. 5, 2013
8294544 Method for making magnetic components with M-phase coupling, and related inductor structures Oct. 23, 2012
8209849 Method for producing multilayer inductor Jul. 3, 2012
7994891 Stacked inductive device assemblies and methods Aug. 9, 2011
7877861 Method of making a transformer having a stacked core with a split leg Feb. 1, 2011
7849586 Method of making a power inductor with reduced DC current saturation Dec. 14, 2010
7768373 Common mode, differential mode three phase inductor Aug. 3, 2010
7728708 Transformer apparatus, inverter transformer, and drive circuit Jun. 1, 2010
7617590 Method of manufacturing an embedded inductor Nov. 17, 2009
7385466 Differential transmission circuit and common mode choke coil Jun. 10, 2008
7271695 Electromagnetic apparatus and method for making a multi-phase high frequency electromagnetic apparatus Sep. 18, 2007
7136293 Full wave series resonant type DC to DC power converter with integrated magnetics Nov. 14, 2006
6873237 Core structure Mar. 29, 2005
6856230 Harmonic filtering circuit with special transformer Feb. 15, 2005
6774758 Low harmonic rectifier circuit Aug. 10, 2004
6753752 Silicon steel core spacing structure for improving induction Jun. 22, 2004
6744343 Flyback transformer mounting structure for video apparatus Jun. 1, 2004
6683524 Transformer core Jan. 27, 2004
6583699 Magnetic material and inductor Jun. 24, 2003
6525638 Choke coil Feb. 25, 2003
6400249 Transformer providing low output voltage Jun. 4, 2002
6317021 Variable inductor Nov. 13, 2001
6137391 Flux-controlled type variable transformer Oct. 24, 2000
6091211 Mis-convergence correction device Jul. 18, 2000
6014071 Choke coil Jan. 11, 2000
5994992 Choke coil Nov. 30, 1999
5912553 Alternating current ferroresonant transformer with low harmonic distortion Jun. 15, 1999
5825272 Choke coil for suppressing common-mode noise and normal-mode noise Oct. 20, 1998
5635890 Choke coil Jun. 3, 1997
5629661 Choke coil for eliminating common mode noise and normal mode noise May. 13, 1997
5581224 Choke coil for eliminating common mode noise and differential mode noise Dec. 3, 1996
5537089 Three phase transformer with reduced harmonic currents Jul. 16, 1996
5525951 Choke coil Jun. 11, 1996
5506559 Choke coil for eliminating common mode noise and normal mode noise Apr. 9, 1996
5481238 Compound inductors for use in switching regulators Jan. 2, 1996
5422620 Transformer Jun. 6, 1995
5412253 IC memory card with non-contact power and data connection May. 2, 1995
5394319 Non-coupled integrated magnetic structure Feb. 28, 1995
5363035 Phase controlled transformer Nov. 8, 1994
5359314 Core and coil assembly for an amorphous-steel cored electric transformer Oct. 25, 1994
5229652 Non-contact data and power connector for computer based modules Jul. 20, 1993
5182535 Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding Jan. 26, 1993
5177460 Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings Jan. 5, 1993
5053738 Magnetic leakage transformer Oct. 1, 1991
5003277 Phase-shifting transformer with a six-phase core Mar. 26, 1991
4975670 Air cooled transformer Dec. 4, 1990
4943763 Ferroresonant transformer with dual outputs Jul. 24, 1990
4864478 Integrated-magnetics power converter Sep. 5, 1989
4835497 AC line filter May. 30, 1989

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