Patents for H01F 17 - Fixed inductances of the signal type (10,329)
07/1991
07/17/1991CN2081135U Miniature wide-band electric power wave rejector
07/16/1991US5032815 Lamination type inductor
07/16/1991US5032810 LC filter
07/16/1991US5032808 R.F. choke for CATV system
07/16/1991US5032764 Coil, a method of construction of said coil and an imaging device equipped with a coil of this type
07/10/1991EP0436385A2 High-frequency inductor and manufacturing method thereof
07/10/1991EP0436274A2 Thin film magnetic core memory and method of making same
07/03/1991EP0435230A2 Laminated LC element and method for manufacturing the same
07/03/1991EP0435160A1 Inductor
07/03/1991CN2080215U Fluorescent lamp ballast with new structure
06/1991
06/25/1991US5025550 Automated method for the manufacture of small implantable transponder devices
06/19/1991CN2079347U Magnetic pulse depressed switch
06/04/1991US5021758 Circuit arrangement comprising MESFET switched spiral inductor
05/1991
05/29/1991DE3938718A1 Miniature chip inductor for SMD circuitry - has basic body with lower and top parts, with lower part contacting faces for circuit board
05/29/1991CN1051819A Planar coil construction
05/22/1991EP0428142A2 Planar coil construction
04/1991
04/23/1991US5010313 Chip coil
04/23/1991CA1283464C Microwave transformer
04/17/1991EP0422609A1 Linearizing coil for linearizing the line current of image layer devices
03/1991
03/26/1991US5003278 Ferrite suppressor case with retaining fingers
03/26/1991CA1282010C Inductive coupled power system
03/06/1991CN2072720U Multipolar magnetic field coil
02/1991
02/27/1991EP0414315A1 Inductive device
02/20/1991EP0413348A2 Semiconductor integrated circuit
02/19/1991CA1280475C Transformer structure
02/14/1991DE3926231A1 Small, tunable inductance for HF circuitry - has parallel wound turns of two coils with identical dia.
02/06/1991EP0411922A1 Composite winding type stacked-layer inductors including self-inductive inductors and mutual-inductive inductors and method of manufacturing the same
02/05/1991US4990891 Identification device in the form of a tag-like strip affixable to an article
02/05/1991US4990880 Transformer clip
01/1991
01/24/1991WO1991001029A1 Coin testing apparatus
01/08/1991US4983934 Noise filter
01/08/1991US4983932 Electric noise absorber
01/02/1991EP0405671A1 Winding support and method of forming an assembly comprising an electric coil and an electronic component by means of such a support
12/1990
12/18/1990US4978906 Picture frame matrix transformer
12/11/1990US4977491 High frequency transformer with a printed circuit winding in particular for a very high voltage power supply
12/04/1990US4975672 High power/high frequency inductor
12/04/1990US4975671 Transformer for use with surface mounting technology
11/1990
11/28/1990EP0399779A1 An electronic component with a fastener
11/27/1990US4973930 Twin coil
11/20/1990US4972167 Electric noise absorber
11/15/1990WO1990013939A1 Power conversion system
11/13/1990US4970476 Electric noise absorber using a granular or liquid magnetic substance
10/1990
10/24/1990EP0393644A2 LC noise filter
10/24/1990EP0393599A2 Surface mounted electric coil
10/16/1990US4964013 Electric noise absorber
10/16/1990US4964012 Electric noise absorber
10/11/1990DE3911194A1 Package for annular elements, in particular electrical construction elements
10/10/1990EP0377691A4 Matrix transformer having high dielectric isolation
09/1990
09/25/1990US4959631 Planar inductor
09/25/1990US4959630 High-frequency transformer
09/18/1990US4958134 Noise suppression device comprising a toroid winding
09/13/1990DE4007614A1 Inductive element, esp. HF transformer - has conductor wound spirally around magnetic core and held inside winding block
09/12/1990EP0092555B1 Tag-shaped identification device attachable to an object
09/11/1990US4956627 High-frequency component
09/11/1990US4956114 Borosilicate glass having improved mechanical strength and electromagnetic properties
08/1990
08/29/1990CN1045002A Coil capable of producing instantaneous strong magnetic field
08/15/1990CN1009231B Improved toroidal transformer and machines and methods for making same
08/14/1990US4949221 Encased electronic component
07/1990
07/31/1990US4945332 Noise suppression inductor
07/18/1990EP0377691A1 Matrix transformer having high dielectric isolation
07/12/1990DE3941915A1 Suppressor for electronic equipment electromagnetic interference - uses magnetic material ring located or connecting cable to unit
06/1990
06/21/1990DE3941323A1 Semiconductor logic circuit with FET(s) forming integral inductor - has three=dimensional structure with switched transistors, conductive tracks and connecting channels arranged in different planes
06/06/1990EP0371434A1 Multipole suppression choke for data lines with multiple leads
05/1990
05/17/1990DE3938177A1 Stossstrom-unterdrueckungsschaltung und magnetische einrichtung darin Surge current-unterdrueckungsschaltung and magnetic device is
05/15/1990US4926292 Broadband printed spiral
05/15/1990US4926151 Chip-type coil element
05/09/1990EP0366739A1 Electric transmission device
05/01/1990US4922156 Integrated power capacitor and inductors/transformers utilizing insulated amorphous metal ribbon
04/1990
04/17/1990US4918417 Inductor having parallel line electrodes
04/12/1990DE3834590A1 Holder for fastening an annular core
04/05/1990WO1990003697A1 Data current coupler and methods of making and assembling same
04/04/1990EP0361967A1 Planar inductor
03/1990
03/14/1990EP0357608A1 High-frequency component.
03/07/1990EP0357088A2 Multilayer wiring substrate
03/06/1990US4905358 Thin film active trimmable capacitor/inductor
02/1990
02/27/1990US4904879 Data current coupler and methods of making and assembling same
01/1990
01/30/1990US4897626 Cooling electromagnetic devices
01/24/1990EP0351861A1 Inductive component, especially a transformer
01/24/1990EP0351583A1 Twin coil
01/11/1990DE3822627A1 Inductor, in particular for wideband use
12/1989
12/28/1989DE3820976A1 SMD inductor or transformer
12/19/1989US4888571 Coil means
12/05/1989US4885559 Electric noise absorber
11/1989
11/07/1989US4878291 Method of manufacturing toroidal coils
11/02/1989WO1989010651A1 Electric transmission device
11/02/1989WO1989010621A1 Matrix transformer having high dielectric isolation
10/1989
10/17/1989US4873757 Method of making a multilayer electrical coil
10/11/1989EP0336771A2 Integrated capacitor and inductors/transformers utilising insulated amorphous metal ribbon
10/10/1989US4873505 Electric noise absorber
10/05/1989DE3810330A1 Mains suppression inductor (filter) for a telecommunications apparatus
10/04/1989EP0335780A1 Coil, manufacturing method for said coil and imagery device having such a coil
10/04/1989EP0335713A1 Ferrite toroid isolator
09/1989
09/28/1989DE3908896A1 Chip inductor
09/27/1989EP0334520A1 Integrated inductor/capacitor device using soft ferrites
08/1989
08/29/1989US4862189 Microwave transformer
07/1989
07/27/1989DE3801542A1 Storage inductor for storing magnetic energy and for smoothing pulsating load currents
07/18/1989US4847986 Method of making square toroid transformer for hybrid integrated circuit
07/05/1989CN1033712A Miniature high frequency power transformer
07/04/1989US4845452 Composite bead element
06/1989
06/27/1989US4842352 Chip-like inductance element
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