Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7764156 | Magnetic flux return path with collated bands of wire Method of forming a magnetic core or part of a magnetic core including several layers of windings of magnetic wire in a very compact configuration, and the core or part of core is formed by winding several layers of a collated band of wires side by side until desire... | 07/27/2010 |
| 7340825 | Method of making a transformer A transformer and method of making includes first half primary and secondary windings as metallic circuits that are etched on a metallic cladding of a first liquid crystal polymer (LCP) sheet. Secondary windings are positioned in spaced relation to the primary windi... | 03/11/2008 |
| 7330096 | Fault current limiter A fault current limiter (FCL) comprises: an air core flat clock spiral inductor comprising wound electrically conductive material and insulated turns; and two terminations configured for attaching the spiral inductor in series with a power carrying conductor. ... | 02/12/2008 |
| 7180315 | Substrate with patterned conductive layer A method of processing a substrate is provided. The method includes providing a substrate having a first surface, a second surface, and conductive paths extending from the first surface to the second surface. The method also includes (1) covering a portion of the fi... | 02/20/2007 |
| 7138188 | Magnetic implement using magnetic metal ribbon coated with insulator A magnetic ribbon or sheet is coated with an electrical insulator prior to formation of a magnetic implement. Manufacture of the magnetic implement is accomplished in a single process without a need for co-winding magnetic and insulator ribbons. Thermal property dif... | 11/21/2006 |
| 7127806 | Method for marking coaxial cable jumper assembly including plated outer assembly A jumper coaxial cable assembly includes a jumper coaxial cable and at least one solder-type connector secured thereto. The cable may include an outer conductor, which, in turn, includes aluminum with a tin layer thereon. The tin layer permits an aluminum outer cond... | 10/31/2006 |
| 7118728 | Method and apparatus for making ferrite material products and products produced thereby A method for making ferrite powder may include providing ferrite feed materials in a form of particles having different sizes and irregular shapes, and exposing the ferrite feed materials to a plasma to provide a more spherical shape to irregularly shaped particles ... | 10/10/2006 |
| 7056595 | Magnetic implement using magnetic metal ribbon coated with insulator A magnetic ribbon or sheet is coated with an electrical insulator prior to formation of a magnetic implement. Manufacture of the magnetic implement is accomplished in a single process without need for co-winding magnetic and insulator ribbons. Thermal property diffe... | 06/06/2006 |
| 6980074 | Low noise full integrated multilayers magnetic for power converters A multilayer structure in which all the magnetic elements have the windings edged in the inner layers and the magnetic core which surrounds the winding has the legs penetrating through the multilayer structure. The interconnection between the magnetic elements and t... | 12/27/2005 |
| 6940366 | Coil filter and method for manufacturing the same The present invention provides a coil filter suitable for surface mounting on an electronic circuit board by automatic mounting and capable of realizing wide band isolation excellent in high-frequency characteristics without requiring consideration for the mutual po... | 09/06/2005 |
| 6927661 | Planar transformer and output inductor structure with single planar winding board and two magnetic cores The magnetic device consists of a planar winding board, which contains the windings for both the inductor and the transformer. Thus, this invention centers on integrating the windings of multiple magnetic devices, not integrating the cores. By connecting the transfo... | 08/09/2005 |
| 6922127 | Raised on-chip inductor and method of manufacturing same A raised on-chip planar inductor. An inductor is fabricated on a substrate. The inductor, except for an anchoring extremity, is lifted from the substrate, preferably by application of a magnetic field to a magnetic layer formed on the inductor. The lifting of the in... | 07/26/2005 |
| 6914513 | Materials system for low cost, non wire-wound, miniature, multilayer magnetic circuit components This invention describes materials system and processing conditions for manufacturing magnetic circuit components such as induction coils and transformers that are non wire-wound, miniature in size and, have a low manufacturing cost. The materials system of this inv... | 07/05/2005 |
| 6715198 | Method of manufacturing a magnetic sensor A magnetic sensor of orthogonal flux-gate type is provided with a cylindrical core made of a soft magnetic material; an internal conductor that is placed inside the core; a detection coil wound up on the core; and an external conductor that is placed around the core... | 04/06/2004 |
| 6650529 | Inductor and method of manufacturing same An inductor includes a bar-shaped ferrite core and a spiral coil. The spiral coil is formed by removing a portion of a conductive film formed at least around the peripheral surface of the ferrite core. The surface of the ferrite core is impregnated with a... | 11/18/2003 |
| 6633219 | Coil for automated mounting The present invention relates to a coil (1) having a plurality of turns (2). The characteristic feature of the invention is that the turns (2) include a magnetic material or the turns (2) have an outer layer for carrying an electric current and have a mag... | 10/14/2003 |
| 6563411 | Current transformer with direct current tolerance A current transformer for alternating current with direct current components is proposed, consisting of at least one transformer core with a primary winding and at least one secondary winding to which a burden resistor is connected in parallel and termina... | 05/13/2003 |
| 6445272 | High-current electrical coils A high current capacity electrical coil made of coil elements stamped out from a plate or sheet of conductive material with mating male and female formations at opposite ends so that the male and female formations of adjacent elements can be fitted togeth... | 09/03/2002 |
| 6414564 | Distributed constant element using a magnetic thin film The present invention is directed to a magnetic thin-film device whose operating frequency band ranges from several millihertz (MHz) to several gigahertz (GHz) and which is used as an inductor for a switching power supply, a noise filter, a reception circ... | 07/02/2002 |
| 6413351 | Edge bonding for amorphous metal transformer Provided is a magnetic core for transformers which is made at least in part of amorphous metal lamination layers. The lamination layers are coated on the edges with a low-stress, low-viscosity coating material which, when cured, becomes sufficiently rigid... | 07/02/2002 |
| 6168696 | Non-knurled induction coil for ionized metal deposition, sputtering apparatus including same, and method of constructing the apparatus An RF induction coil for inductively coupled ionized sputtering applications having at least one extremely smooth surface, on the order of about 30 μm or less, which faces, substantially resides within, or is immediately proximate a plasma field in a spu... | 01/02/2001 |
| 6105236 | Magnetic structure for minimizing AC resistance in planar rectangular conductors Conductive apparatus having minimized AC resistance. The conductive apparatus comprises a planar rectangular conductor having top and bottom surfaces, and opposed end surfaces that are smaller in dimension than the top and bottom surfaces. Magnetic materi... | 08/22/2000 |
| 6002318 | Device for dissipating heat from ferrite cores of inductive components A device for dissipating heat from ferrite cores of inductive components is provided. Specifically, in order to dissipate heat from cores made from ferromagnetic material for inductive components, an electrically and thermally conductive layer which can b... | 12/14/1999 |
| 5916476 | Oxide magnetic materials, making method, antenna coils, and inductance elements To an oxide magnetic material consisting essentially of, calculated as oxides, 15-30 mol % of Fe2 O3, 6-12 mol % of CuO, and 58-79 mol % of NiO as main ingredients, 1.5-4.5% by weight of PbO, 1.0-3.7% by weight of SiO2, 0.... | 06/29/1999 |
| 5847634 | Article comprising an inductive element with a magnetic thin film A thin film inductive element according to this invention comprises an elongate conductor, and spaced apart magnetic strips that substantially surround the conductor, with dielectric material between the magnetic strips and the conductor. The inductive el... | 12/08/1998 |
| 5844460 | Wound, solid state inductor Wound, solid state inductors are provided by winding flexible plastic tape having electrically insulative and magnetic permeability properties. Such tape is sometimes referred to as magnetic tape. An electrically conductive layer is placed on at least one... | 12/01/1998 |
| 5804959 | Shunt core transformer with a second secondary coil comprised of a ferrous material Disclosed is an improved shunt core transformer in which a primary winding drive generates a varying magnetic flux field around a transformer core which field thereby induces the plate voltage induces a voltage in both a first secondary and second seconda... | 09/08/1998 |
| 5668518 | Wire wound drum A wire wound drum using a magnetic element having a non-magnetic shell and a matrix material bonded to the shell and made up of a non-magnetic wire and a magnetic wire wound on the shell in bobbin fashion single layer alternate magnetic and non-magnetic w... | 09/16/1997 |
| 5576921 | Aggregate current transformer A sum current transformer that acts on a protective switch via an amplifier has a core of a solid metallic material composed of an alloy having more than 40% nickel, so that it can be implemented mechanically solid even given small dimensions. The tempera... | 11/19/1996 |
| 5541566 | Diamond-like carbon coating for magnetic cores There is provided a core for a magnetic switch. The core has a plurality of metallic strips, either as a coil or as stacked plates. Each strip is separated from adjacent strips by an electrically insulating polycrystalline carbon layer. The high thermal c... | 07/30/1996 |
| 5532667 | Low-temperature-cofired-ceramic (LTCC) tape structures including cofired ferromagnetic elements, drop-in components and multi-layer transformer A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic (LTCC) tape, and is chemically non-reactive therewith. Th... | 07/02/1996 |
| 5410289 | Electromagnet An electromagnet is provided having a housing and a coil disposed therein. The coil comprises three strips of material placed adjacent one another in an interleaved fashion. The coil comprises a strip of insulation, a magnetic strip, and an electrical con... | 04/25/1995 |
| 5235488 | Wire wound core Disclosed is a helically wound core of ferrous material used as a differential current sensor core in the ground fault sensor of a ground fault interrupter circuit. The ferrous material comprises a single strand of wire which is wound in helical fashion t... | 08/10/1993 |
| 5159347 | Micromagnetic circuit Microscopic strips of high permeability magnetic conductor are arrayed in a proximate relation to an electrical conductor to form paths for magnetic circuits about the electrical conductor. The strips may take various forms including filaments, such as on... | 10/27/1992 |
| 5153549 | Coil inductor with metal film on wire An inductor having a metal wire which is made of a copper base wire, a first film of a metal which is diffusible into solder, on the copper base wire, a second film of a metal which has fine solderability, on the first metal film, and an insulating coat o... | 10/06/1992 |
| 4916425 | Electromagnetic device An electromagnetic device, comprising a first, ring-shaped wound unit consisting of at least first and a second sequentially wound portions of electrically insulated layers of concentrically wound windings, the first portion being made of high permeabilit... | 04/10/1990 |
| 4814587 | High power self-regulating heater An improved performance ferromagnetic self-regulating heater. Constant alternating current is applied to a layered structure including at least one ferromagnetic layer. One or more layers of non-magnetic material is added to the ferromagnetic layer in suc... | 03/21/1989 |
| 4725768 | Switching regulated power supply employing an elongated metallic conductive inductor having a magnetic thin film coating An inductor and a switching means are combined in such a way that the storage of the energy in the inductor and the release of the energy stored in the inductor are repeatedly carried out, whereby the released energy is rectified and smoothed to obtain a ... | 02/16/1988 |
| 4670342 | Method of making electrical inductive devices for use in hermetic refrigerant atmospheres A method for making an electrical inductive device for use in hermetic atmospheres which incorporate refrigerants such as halogenated methane compositions, for example refrigerant R-22, monochlorodifluoromethane. The device may be a wound coil device form... | 06/02/1987 |
| 4530812 | Composite coils for toroidal field coils and method of using same A composite toroidal field (TF) generating means consisting of segmented magnetic coil windings is disclosed. Each coil winding of the TF generating means consists of a copper or copper alloy conductor segment and an aluminum or aluminum alloy conductor s... | 07/23/1985 |
