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| Number | Title | Issue Date |
| 7911318 | Circuit boards with embedded resistors The present invention relates to an adjustable resistor embedded in a circuit board and a method of fabricating the same. The adjustable resistor comprises a resistor with a number of connection terminals, and a number of via holes extending to contact with the resi... | 03/22/2011 |
| 7414514 | Resettable chip-like over-current protection devices The invention relates to resettable chip-type over-current protection devices and methods of making the same, characterized by directly forming upper and lower electrode conductor and connection electrode conductor on a PPTC substrate so as to constitute a simplifie... | 08/19/2008 |
| 7326889 | PTC element and production process thereof A method of manufacturing a PTC element comprising a pair of lead terminals bonded together by thermocompression with a matrix held therebetween comprises a matrix preparing step of preparing a matrix constructed by dispersing a conductive filler into a crystalline ... | 02/05/2008 |
| 7303978 | Board for mounting BGA semiconductor chip thereon, semiconductor device, and methods of fabricating such board and semiconductor device To fabricate a semiconductor device, a pattern of recesses and lands is formed on a copper sheet as a matrix sheet, and BGA pads are formed on the lands on the copper sheet. An insulating layer is formed on the copper sheet to transfer the pattern of recesses and la... | 12/04/2007 |
| 7276793 | Semiconductor device and semiconductor module A semiconductor device is provided wherein conductive paths 40, formed of crystal that grows better along the X-Y axis than along the Z axis, are embedded in an insulating resin 44, and the back surface of the conductive path 40 is exposed throu... | 10/02/2007 |
| 7138900 | Resetable over-current protection device and method of making the same The present invention relates to a resetable over-current protection device. The device is characterized in that: disconnected areas are maintained at end faces of formed cutting regions of the protection device, wherein one or two of the end faces of the formed cut... | 11/21/2006 |
| 7129814 | Chip resistor and method of making the same A chip resistor includes a metal resistor element having a flat lower surface. The lower surface is formed with two electrodes spaced from each other, and an insulating resin film is formed between these electrodes. Each of the electrodes partially overlaps the insu... | 10/31/2006 |
| 7091820 | Methods for manufacturing resistors using a sacrificial layer A microelectronic assembly, including a microelectronic element such as a semiconductor chip and a dielectric material covering the chip and forming a body having a bottom surface. The assembly includes conductive units having portions exposed at the bottom surface,... | 08/15/2006 |
| 7069641 | Method for preparing composite materials of a positive temperature coefficient thermistor The present invention discloses a method for preparing a conductive polymeric composite material having carbon black utilized to a structure for composite materials of a positive temperature coefficient thermistor. The method first provides a metal laminated materia... | 07/04/2006 |
| 7038572 | Power chip resistor A method and apparatus for a stacked power chip resistor is disclosed. The invention provides for multiple power chip resistors to be stacked, providing for encapsulant such as glass to separate each power chip resistor and a metal barrier such as nickel plating on ... | 05/02/2006 |
| 6918316 | Adjustable pedal assembly An adjustable pedal assembly includes a mounting arrangement (1) for attachment to a vehicle structure (37), an accelerator pedal (6), a brake pedal (7), and a clutch pedal (8). The pedals (6, 7, 8) are pivotally supported w... | 07/19/2005 |
| 6686827 | Surface mountable laminated circuit protection device and method of making the same A surface mountable laminated circuit protection device comprises a first metal layer including a first unit and a second unit, a first insulating layer disposed on the first metal layer, and a second metal layer disposed on the first insulated layer. The... | 02/03/2004 |
| 6590491 | Structure for composite materials of positive temperature coefficient thermistor devices and method of making the same The present invention discloses a structure for composite materials of a positive temperature coefficient thermistor and a method of making the same. A carbon black is electroplated onto a surface of the metal electrodes of a metal laminated material to f... | 07/08/2003 |
| 6563214 | Electronic component and method of manufacturing the same An electronic component having a substrate on which one or more grooves are formed on its opposing side faces; electrodes formed on the groove and top and bottom faces of the substrate at a portion adjacent to the groove; and a circuit element formed betw... | 05/13/2003 |
| 6434815 | Variable resistor A first rotor and a second rotor are prepared. The first rotor has a resistor and inner-peripheral and outer-peripheral electrodes respectively connected to end portions of this resistor. The second rotor has a resistor and inner-peripheral and outer-peri... | 08/20/2002 |
| 6310536 | Termination resistor in printed circuit board A printed circuit board having resistors formed therein. A conductive layer composed of two different metals is provided on top of an insulating layer in a printed circuit board. The first metal layer is highly conductive and the second metal layer is hig... | 10/30/2001 |
| 6285275 | Surface mountable electrical device A surface mountable electrical devices includes a PTC resistive element having opposite first and second surfaces and lateral faces interconnecting the first and second surfaces, spaced apart first and third electrode layers formed on the first surface, a... | 09/04/2001 |
| 6236302 | Multilayer conductive polymer device and method of manufacturing same An electronic device includes two or more conductive polymer layers sandwiched between two external electrodes and one or more internal electrodes. A three layer device is manufactured by: (1) providing a first laminated substructure comprising a first po... | 05/22/2001 |
| 6223423 | Multilayer conductive polymer positive temperature coefficient device A conductive polymer PTC device includes upper, lower, and center electrodes, with a first PTC conductive polymer layer between the upper and center electrodes, and a second PTC conductive polymer layer between the center and lower electrodes. Each of the... | 05/01/2001 |
| 6150920 | Resistor and its manufacturing method The present invention is to offer a resistor which can be mounted exactly on the terminals disposed on a circuit board regardless the sides of the resistor, and to offer its manufacturing method by forming the surface of the side-electrode layer at a heig... | 11/21/2000 |
| 5973588 | Multilayer varistor with pin receiving apertures A composition material for use in manufacturing a varistor consists of the following constituents: a) zinc oxide, b) ceramic structure influencing additives selected from the group consisting of bismuth oxide, boric acid, chromium oxide, cobalt oxide, man... | 10/26/1999 |
| 5900800 | Surface mountable electrical device comprising a PTC element An electrical device having a resistive element having a first electrode in electrical contact with the top surface of the resistive element and a second electrode in electrical contact with the bottom surface of the resistive element. An insulating layer... | 05/04/1999 |
| 5880439 | Functionally stepped, resistive ceramic An electrically powered functionally graded ceramic composite heater and a functionally stepped ceramic composite heater useful for cigarette lighters. The electrical resistance heater includes discrete heating zones wherein each zone of the heater can be... | 03/09/1999 |
| 5867087 | Three dimensional polysilicon resistor for integrated circuits A three dimensional polysilicon resistor and a method by which the three dimensional polysilicon resistor is manufactured. A semiconductor substrate has formed upon its surface an insulating layer. The insulating layer has a minimum of one aperture formed... | 02/02/1999 |
| 5864281 | Electrical devices containing a conductive polymer element having a fractured surface Electrical devices, particularly circuit protection devices, contain conductive polymer elements whose edges are formed by breaking the conductive polymer element, along a desired path, without the introduction of any solid body into the element. The resu... | 01/26/1999 |
| 5852397 | Electrical devices A circuit protection device which comprises first and second laminar electrodes; a laminar PTC conductive polymer resistive element sandwiched between the electrodes; a third laminar conductive member which is secured to the same face of the PTC element a... | 12/22/1998 |
| 5831510 | PTC electrical devices for installation on printed circuit boards Laminar electrical devices, in particular circuit protection devices, contain two laminar electrodes, with a PTC element between them, and a cross-conductor which passes through the thickness of the device and contacts one only of the two electrodes. This... | 11/03/1998 |
| 5815367 | Layered capacitors having an internal inductor element Multi-terminal, layered capacitors having excellent attenuation characteristics over a wide frequency range. A four-terminal, layered capacitor has a dielectric sheet with an internal inductor electrode connecting an external input terminal to an external... | 09/29/1998 |
| 5812048 | Linear positioning indicator Use is made of thermoplastic materials in layered configurations as a thermally stable, rigid but not brittle strip of lengths of six inches to ten feet or more. The layered strip contains layers of conductive fibers in a resin matrix, which, through use ... | 09/22/1998 |
| 5804092 | Modular ceramic igniter with metallized coatings on the end portions thereof and associated terminal socket A modular igniter system which preferably provides either direct electrical connection between the metallized ends of the hot surface igniter and the socket contact, or indirect electrical connection by a short lead wire held in place on the hot surface e... | 09/08/1998 |
| 5675310 | Thin film resistors on organic surfaces A method for fabricating a thin film resistor comprises applying a tantalum nitride layer over a dielectric layer, applying a metallization layer over the tantalum nitride layer, and patterning the metallization layer with a first portion of the metalliza... | 10/07/1997 |
| 5661450 | Low inductance termination resistor arrays An array of termination resistors has symmetrical geometry producing essentially no net magnetic field and a resultant low inductance is fabricated on a substrate as disk resistors. Conductive through vias are formed in the substrate in an array pattern d... | 08/26/1997 |
| 5561586 | Electronic device with a capacity An electronic device which has, on a rectangular insulating substrate, an input electrode and an output electrode, grounding electrodes and a conductor for electrically connecting the input electrode and the output electrode. The input electrode and the o... | 10/01/1996 |
| 5539186 | Temperature controlled multi-layer module A multi-layer module that has incorporated therein an additional sheet with a heat generating film resistor formed thereon. A temperature responsive controller regulates the film resistor current in order to regulate the temperature at the surface of the ... | 07/23/1996 |
| 5521577 | Low profile resistor A low profile load resistor includes a base plate of an electrically conductive material having a pair of opposed flat surfaces and a hole therethrough. A chip resistor is mounted on one of the surfaces of the base plate. The chip resistor includes a subs... | 05/28/1996 |
| 5521357 | Heating device for a volatile material with resistive film formed on a substrate and overmolded body A heater apparatus includes a substrate, a resistive film formed on a first portion of the substrate, and first and second conductive leads formed on the substrate engaging the resistive film. First and second electrodes are coupled to the first and secon... | 05/28/1996 |
| 5483217 | Electronic circuit device An electronic circuit device decreases dispersion in the output of the circuit caused by changes in the resistance of the resistors resulting from stress. Resistor positions are selected on the circuit board so that a change in the circuit output caused b... | 01/09/1996 |
| 5471032 | Electrical resistance ignitor with spaced parallel filaments brazed in refractory block recesses An ignitor for fuel gas burners formed of a plurality of spaced parallel filaments of SiC coated Carbon (C) high temperature brazed with Chromium Silicide in grooves provided in a refractory base block of Aluminum Oxide and Silicon Oxide. Terminal posts o... | 11/28/1995 |
| 5430429 | Ceramic resistor wherein a resistance film is embedded A resistor 1 in which at least one resistance film 4 is embedded in a ceramic sintered body 3, glass is diffused into the sintered body 3 to form a glass diffusion layer 6, and both end faces 4a and 4b of the resistance film 4 are respectively exposed to ... | 07/04/1995 |
| 5367906 | Hot wire air flow meter An exothermic resistor for use in a hot wire air flow meter, having a wire (2) in the form of a coil made of a metal, a pair of lead wires (3) connected to connections (21) formed at the opposite ends of the coil, and a support member (4) which integrally... | 11/29/1994 |
