Class 336/84M - Magnetic

Subclass of Class 336 - Inductor devices
No. of patents: 87
Last issue date: 12/27/2011

Number	Title	Issue Date
8085122	High voltage step-up dry power transformer and power supply unit comprising at least one such transformer A high voltage step-up power transformer includes at least one module which defines a lower voltage primary side and a higher voltage secondary side and which includes at least one primary winding and at least one secondary winding, wound concentrically around a fer...	12/27/2011
8018309	Method for improving the efficiency of a power supply device For improving efficiency of a power device having an exposed surface capable of radiating energy, a shielding layer is disposed in between the exposed surface and a conductive layer. The shielding layer causes at least a portion of the energy to be directed back int...	09/13/2011
7876188	Green technologies: the killer application of EMI-free on-chip inductor The EMI-free planar inductor is the core technology of the green technology. The EMI-free planar inductor adopts the structure of the closed magnetic field flux IC inductor (CMFFICI). All the magnetic field is confined in a small volume. The magnetic field is parall...	01/25/2011
7872556	Magnetic element A magnetic assembly includes a mounting substrate and a magnetic element mounted on the mounting substrate. The magnetic element includes a drum core provided with a flange portion at each end of a winding shaft, a coil wound on the winding shaft, and a shield core ...	01/18/2011
7852184	Coil module apparatus A coil module apparatus is provided. The coil module apparatus includes a flat coil, a circuit board, a magnetic sheet, connection terminals, and a case. The flat coil has a flat shape. The circuit board is used for the flat coil. The magnetic sheet is provided so a...	12/14/2010
7821369	Magnetic element To provide a magnetic element the ends of the coil of which can be drawn out from the core easily, is compact, and further, is one in which magnetic saturation does not arise easily. A magnetic element has a core unit provided with a wound coil, a center core 105...	10/26/2010
7741942	Magnetic element A magnetic element includes a drum core provided with a flange portion having a flange surface at each end portion of a winding shaft, a coil wound on the winding shaft, a terminal to connect each end portion of the coil, and a shield core provided with an engagemen...	06/22/2010
7551052	Embedded inductor devices and fabrication methods thereof Embedded inductor devices and fabrication methods thereof. An embedded inductor device includes a substrate, a conductive coil disposed on the substrate, and a patterned high-permeability (μr>1) magnetic layer on the substrate. The patterned high-permeab...	06/23/2009
7495538	Inductor using drum core and method for producing the same An inductor comprises a drum core which comprises a sintered magnetic material and has a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis. The inductor further comprises a coil conductor wound on the winding axis of the d...	02/24/2009
7443274	Inductor and fabricating method thereof An inductor includes a closed core, a magnetic medium and a coil. The magnetic medium covers at least a portion of the closed core. The coil winds around the closed core or the magnetic medium. A fabricating method of the inductor is also disclosed. ...	10/28/2008
7369025	Electronic device provided with a magnetic screening An electronic device furnished with magnetic screening having a peak of resonant magnetic losses. The screening includes at least one inductive winding constituted by at least one segment of metallic wire wound around at least one assembly of magnetic filaments....	05/06/2008
7323948	Vertical LC tank device An LC tank structure. The structure, including a set of wiring levels on top of a semiconductor substrate, the wiring levels stacked on top of each other from a lowest wiring level nearest the substrate to a highest wiring level furthest from the substrate; an induc...	01/29/2008
7285232	Conductive paste and ceramic electronic component A conductive paste contains conductive powder, glass powder and an organic vehicle. The glass powder contains about 10% to 31% of B2O3, about 65% to 86% of SiO2, and more than about 0.5% to less than about 5% of M2O on a w...	10/23/2007
7265649	Flexible inductive resistivity device In one aspects of the present invention, an induction resistivity tool incorporated into a downhole tool string comprises a downhole tool string component comprising a mid-body intermediate first and second tool joints adapted for connection to adjacent tool string ...	09/04/2007
7265648	Composite core nonlinear reactor and induction power receiving circuit A composite core nonlinear reactor comprising a first core member of high permeability material forming a continuous annular magnetic path, a second core member of high permeability material forming an annular magnetic path locally broken by an air gap, a magnetic s...	09/04/2007
7256675	Energy transfer apparatus for reducing conductivity electromagnetic interference and manufacturing method thereof An energy transfer apparatus is developed for reducing a conductivity electromagnetic interference and manufacturing method. The energy transfer apparatus comprises a core, an input winding, an output winding, a supply voltage and a supply winding. The supply windin...	08/14/2007
7240576	Corrosion resistant weldable bosses A corrosion resistant weldable boss includes a body portion having a lower portion formed of a sintered powder, e.g., ferrous powder, which is readily welded to a vehicle structure surface. A capping member is sintered to an upper portion of the body portion and is ...	07/10/2007
7239224	Ignition coil having center core An ignition coil includes a primary coil, a secondary coil, a spool, and a center core. The primary coil and the secondary coil are arranged substantially coaxially with each other. The secondary coil is on an inner side of the primary coil. The secondary coil is wo...	07/03/2007
7205877	Method and apparatus for transferring energy in a power converter circuit A reduced cost energy transfer element for power converter circuits. In one embodiment, an energy transfer element according to an embodiment of the present invention includes a magnetic element having an external surface with at least a first winding and a second w...	04/17/2007
7202767	Ignition apparatus for an internal combustion engine An ignition apparatus for an internal combustion engine includes a central core, a primary coil and a secondary coil arranged outside of the central core, a magnet arranged in abutment with one end face of the central core and magnetized in a direction opposite to t...	04/10/2007
7167074	Integrated planar flyback transformer Method and apparatus are provided for fabricating a planar transformer assembly for use in an implantable medical device. The planar transformer assembly includes a board, a first core, and a second core. The board has a first side, a second side, and an embedded wi...	01/23/2007
7084728	Electrically decoupled integrated transformer having at least one grounded electric shield An integrated circuit, such as a radio frequency integrated circuit (RFIC), has a first layer bearing first metallization patterned for defining a first inductive coil, a second layer bearing second metallization patterned for defining a second inductive coil that o...	08/01/2006
7032617	Intake air control apparatus for an engine An intake air control apparatus for an engine is capable of suppressing the influence of external magnetic flux from outside thereby to prevent a variation in an output of a rotational angle detection sensor due to the external magnetic flux. A permanent magnet is p...	04/25/2006
7035688	Laminate of magnetic material and method of making A laminate having a plurality of layers of magnetic material sandwiched together having a first side and a second side and a method of making the laminate. The plurality of layers of magnetic material having a plurality of radial grooves. A first insulative layer ap...	04/25/2006
6977574	Stick-type ignition coil having improved structure against crack or dielectric discharge A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The...	12/20/2005
6956455	Method of manufacturing laminated ceramic electronic component and laminated ceramic electronic component In a method of manufacturing a laminated ceramic electric component, a first transfer sheet in which a composite green sheet having a non-magnetic ceramic area and a magnetic ceramic area is supported by a supporting film, and a second transfer sheet in which a cera...	10/18/2005
6864419	Electromagnetic shield for an induction heating coil An apparatus and process are provided for reducing the electromagnetic field intensity in selected regions for a field produced when ac current flows through one or more induction coils through which a workpiece moves for induction heating of the workpiece. The elec...	03/08/2005
6859994	Method for manufacturing an inductor A method for manufacturing an inductor is performed in such a manner that the surface of a metal wire provided with an insulating film thereon is coated with a thermal melting resin. The thickness of the thermal melting resin is, for example, approximately 1 μm. As...	03/01/2005
6844799	Compact low cost current sensor and current transformer core having improved dynamic range A current sensor and current transformer for monitoring electrical current is provided with a magnetic core having a mixture of magnetic materials to provide a low cost design in a compact configuration with an expanded dynamic range. The mixed material core can be ...	01/18/2005
6784777	Induction apparatus with damping feature An induction apparatus includes a winding arrangement having a winding start and a winding end for inducing a magnetic field in a magnetizable core; and a lossy, magnetizable device through which and/or about which the winding start and the winding end of the windin...	08/31/2004
6746785	Device for setting a defined electric potential on a ferrite core of an inductive component and/or for reducing damping of the inductive component by losses induced by its magnetic field A metal layer is bonded to the ferrite core of an inductive component. A defined electric potential is thereby set for the ferrite core of an inductive component and/or the damping of the inductive component is reduced which is caused by losses induced from its magn...	06/08/2004
6724290	Microcoil A coil constructed using the additive technique on the surface of a substrate is characterized in that the conductors of the coil are in contact with an insulating material made at least in part of diamond or diamond-like carbon. ...	04/20/2004
6639497	Stationary induction apparatus Leakage fluxes from windings and leads of a stationary induction apparatus are confined within a tank. The stationary induction apparatus includes an electric functional units each including a winding and a core, a tank containing the electric functional ...	10/28/2003
6522129	Induction type transducer and electronic caliper An induction type tranducer is formed to be a substrate having a multilayer structure. The substrate has a multilayer structure including six layers, a first layer through sixth layer. An exciting coil is formed at the first layer. Detecting coils are for...	02/18/2003
6479989	Eddy current probe with an adjustable bisected sensing end In accordance with the present invention there is provided an eddy current probe for the detection of defects within a structure. The probe has a sensing end with a coil disposed therein. The coil is operative to generate an eddy current field within the ...	11/12/2002
6480088	Common mode choke coil A common mode choke coil is realized in which countermeasures against leakage flux are taken so as to reduce adverse effects on an external apparatus. Coils 291, 292 are wound around a toroidal magnetic core 22 and sandwich a partition plate 27 provided w...	11/12/2002
6469607	Stationary induction apparatus Leakage fluxes from windings and leads of a stationary induction apparatus are confined within a tank. The stationary induction apparatus includes an electric functional units each including a winding and a core, a tank containing the electric functional ...	10/22/2002
6429762	Data communication isolation transformer with improved common-mode attenuation A data communications isolation transformer uses an E--E core structure within an integrated circuit package. Two E-shaped core sections of the transformer fit together to form a core structure having a center portion and two outer portions. The center po...	08/06/2002
6420952	Faraday shield and method A planar transformer including a Faraday shield between primary and secondary windings. The Faraday shield is a conductive layer having low conductivity areas. The low conductivity areas may be almost any pattern. The Faraday shield and the windings of th...	07/16/2002
6271741	Rotary inductive coupling A rotary transformer having a stator and rotor each formed by winding a coil on a non-magnetic bobbin and overmolding the bobbin and coil with magnetically permeable particulate material dispersed in a non-magnetic medium preferably selected from the grou...	08/07/2001

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Class 336/84M - Magnetic