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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7355504 | Electrical devices An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising (a) a main portion which comprises a main part of the first electrode, a ma... | 04/08/2008 |
| 7330099 | Chip resistor and manufacturing method therefor A chip resistor includes a resistive element (1), an insulation layer (4) formed in a back surface of the flat surface, and two electrodes (3) spaced from each other via the insulation layer. Each electrode (3) makes contact with the insu... | 02/12/2008 |
| 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 |
| 7241975 | Igniter systems with associated lead frame Resistive igniter systems are provided that comprise a metal substrate with an associated resistive igniter element in electrical connection through braze applied to the metal substrate. Igniter systems of the invention can enable significantly simplified manufactur... | 07/10/2007 |
| 7176781 | Structure and method for adjusting integrated circuit resistor value A resistor formed on a material layer of a semiconductor integrated circuit and a method for forming the resistor. The resistor comprises a region of resistive material with a plurality of conductive contacts or plugs in electrical contact with and extending away fr... | 02/13/2007 |
| 7164341 | Surface-mountable PTC thermistor and mounting method thereof A surface-mountable PTC thermistor element includes electrodes disposed on a top surface and a bottom surface of a thermistor element body, in which each of the electrodes is connected with a terminal respectively and each of the terminals is extended downward. An u... | 01/16/2007 |
| 7148554 | Discrete electronic component arrangement including anchoring, thermally conductive pad An electronic component arrangement includes a discrete electronic component having first and second terminals and a centre-exposed pad. A substrate has a first electrical conductor electrically connected to the first terminal, a second electrical conductor electric... | 12/12/2006 |
| 7145431 | Thermistor having symmetrical structure A thermistor is disclosed, which comprises a resistance element having upper and lower surfaces and showing a resistance varying characteristics according to the change of temperature; first and second conductive layers formed on the upper surface of the resistance ... | 12/05/2006 |
| 7123825 | Water heater and method of providing the same An apparatus for heating fluid and a method for providing the same is provided. Generally, the system contains a metallic core; a dielectric layer thermally sprayed on the core; a resistive heater layer thermally sprayed on the dielectric layer; a metallic layer por... | 10/17/2006 |
| 7088217 | Shunt resistance and method of adjusting the shunt resistance A shunt resistor of the present invention has a configuration including a substantially planar resistor (10) having a predetermined resistance value; a first fixed terminal plate (20) that has one end portion (21) connected to an edge of the res... | 08/08/2006 |
| 7057491 | Impedance network with minimum contact impedance An impedance network configuration in the form of a snake-like or ladder structure is provided. The ladder configuration enables the provision of tabs extending outwardly from the normal conducting path, the tabs providing a location for the provision of contact lay... | 06/06/2006 |
| 7042330 | Low resistance value resistor The low resistance value resistor 11 has two electrodes 12,13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed ... | 05/09/2006 |
| 7034653 | Semiconductor resistor A semiconductor resistor comprises a resistor body formed on a semiconductor substrate and first and second conductive terminals electrically connected to the resistor body at opposite ends thereof. The semiconductor resistor further includes at least first and seco... | 04/25/2006 |
| 7030728 | Layout and method to improve mixed-mode resistor performance A resistor layout and method of forming the resistor are described which achieves improved resistor characteristics, such as resistor stability and voltage coefficient of resistance. A resistor is formed from a conducting material such as doped silicon or polysilico... | 04/18/2006 |
| 6958674 | Connector device excellent in air-tightness and EGR sensor having the same A terminal plate is formed with a wide portion and a narrow portion. The wide portion, to be insert-molded by a housing of a synthetic resin, is opened by an elongate blank hole having an inner peripheral surface parallel with a side shape thereof, thereby forming t... | 10/25/2005 |
| 6932928 | Method of producing a PTC-resistor device The invention relates to a novel method of producing a resistor device comprising a PTC-polymer element 2 and a varistor element 4. Both elements are molded in a common molding process using one common mold. Preferred is co-injection molding. The inven... | 08/23/2005 |
| 6856235 | Methods for manufacturing resistors using a sacrificial layer A method of making resistors includes providing a sacrificial layer. Conductive material is then formed over a region of the sacrificial layer. Resistive material is then deposited over the first surface of the sacrificial layer such that the resistive material cove... | 02/15/2005 |
| 6825448 | Low residual-stress brazed terminal for heater Embodiments of the present invention are directed to relieving the stresses caused by a mismatch in the coefficients of thermal expansion in the components forming the connections at the terminals of a heater. In one embodiment, a heater comprises a heater body havi... | 11/30/2004 |
| 6794985 | Low resistance value resistor The low resistance value resistor 11 has two electrodes 12, 13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed... | 09/21/2004 |
| 6597277 | 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... | 07/22/2003 |
| 6577225 | Array resistor network An array resistor network that has a high density of resistors per unit area. The array resistor network includes a ceramic substrate having a top and bottom surface. Apertures extend through the substrate between the top and bottom surfaces. Recesses are... | 06/10/2003 |
| 6515264 | Heater A rod-shaped heater provided is composed of a carbon wire heating element 2 sealed in a small or large diameter quartz glass tube, a small diameter quartz glass tube portions 3a and 3b charged with compressed wire carbon members at opposite ends thereof; ... | 02/04/2003 |
| 6498561 | Thermistor and method of manufacture A thermistor having multiple metal layers about at least a portion of a semiconductor body. The thermistor includes a first thick film electrode layer, a reactive metal layer, a barrier metal layer and, optionally, a layer to facilitate attachment to an e... | 12/24/2002 |
| 6489880 | Mounting structure for thermistor with positive resistance-to-temperature characteristic A thermistor with positive resistance-to-temperature characteristic used in a overcurrent protection circuit has electrodes on mutually opposite main surfaces and is mounted to a substrate having electrically conductive members such that deterioration of ... | 12/03/2002 |
| 6404324 | Resistive component for use with short duration, high-magnitude currents A resistor having a generally planar substrate with a resistive element located on each side of the substrate and a plurality of terminals for connecting opposing portions of each of the resistive elements to an electronic circuit. The resistive elements ... | 06/11/2002 |
| 6311390 | Method of producing thermistor chips Thermistor chips are produced by first obtaining elongated strips made of a sintered ceramic plate having a specified resistance-temperature characteristic and having thereon a plurality of mutually parallel grooves extending perpendicularly to its direct... | 11/06/2001 |
| 6252200 | Process for sealing the terminal-side end area of the glow tube of a glow plug and glow plugs with a seal as claimed in the process This invention relates to a process for sealing of the terminal-side end area of the glow tube of a glow plug, this area of the glow tube (3) being crimped.... | 06/26/2001 |
| 6229098 | Method for forming a thick-film resistor and thick-film resistor formed thereby A process for forming a thick-film resistor whose dimensions can be accurately obtained, thereby yielding a precise resistance value. The method includes providing on a substrate a photoimageable layer that preferably forms a permanent dielectric layer of... | 05/08/2001 |
| 6215388 | Parallel connected PTC elements A plurality of PTC material layers and a plurality of metal plates are sandwiched together with one adjacent pair of metal plates connected in series through one layer of PTC material. The remaining PTC material layers are connected in parallel with the o... | 04/10/2001 |
| 6181234 | Monolithic heat sinking resistor A monolithic resistor is provided with a central resistive metallic foil strip positioned between and attached to a pair of wings formed from an electrically conductive metallic foil. The wings include large surface areas to dissipate heat. A plurality of... | 01/30/2001 |
| 6040755 | Chip thermistors and methods of making same A chip thermistor is produced by providing a planar rectangular thermistor block with a pair of electrodes formed on its surfaces, each of the electrode being formed so as to be in part on a different one of the main surfaces and extending continuously at... | 03/21/2000 |
| 6020809 | Mounting structure for thermistor with positive resistance-to-temperature characteristic A thermistor with positive resistance-to-temperature characteristic used in a overcurrent protection circuit has electrodes on mutually opposite main surfaces and is mounted to a substrate having electrically conductive members such that deterioration of ... | 02/01/2000 |
| 5929743 | Mounting structure for thermistor with positive resistance-to-temperature characteristic A thermistor with positive resistance-to-temperature characteristic used in a overcurrent protection circuit has electrodes on mutually opposite main surfaces and is mounted to a substrate having electrically conductive members such that deterioration of ... | 07/27/1999 |
| 5929745 | High-voltage electric component A high-voltage variable resistor unit including a terminal connection structure capable of preventing upward movement or rotation of the terminal by simple construction. A terminal is provided with a connecting portion between a held portion and a lead wi... | 07/27/1999 |
| 5909168 | PTC conductive polymer devices A housing contains a PTC element which can be easily inserted and removed. Conductive metal retaining elements of the housing are secured to the base of the housing, and retain the PTC element with a generally planar portion parallel to the electrodes of ... | 06/01/1999 |
| 5903207 | Wire wound inductors A wire-wound inductor includes a dielectric core, terminals including wire staples that are crimped around the core, and a wire winding disposed about the perimeter of the core and connected to the terminals. A coating such as an adhesive coating is dispo... | 05/11/1999 |
| 5850171 | Process for manufacturing resistor-networks with higher circuit density, smaller input/output pitches, and lower precision tolerance The present invention discloses a resistive circuit. The resistive circuit includes a plurality of resistor networks disposed on a substrate. The resistor networks also includes a plurality of resistive circuit elements. The resistor networks further incl... | 12/15/1998 |
| 5847640 | Variable resistor A variable resistor includes a first housing, a second housing formed of resin and having a connector part and a circuit board whose surface has an electrode and a resistance pattern thereon. A metallic terminal is molded in the second housing as one body... | 12/08/1998 |
| 5631624 | Dielectric ceramics and electronic parts using the same A dielectric ceramics contains, at least, two kinds of metal ions and a dielectric constant changes continuously or step by step as a function of position. The metal ions contained in the dielectric ceramics are, at least, two kinds which are selected fro... | 05/20/1997 |
| 5557251 | Thermistor with electrodes for preventing inter-electrode migration A thermistor includes a plate-like thermistor body and a first and a second electrode formed on each of the main surfaces of said plate-like thermistor body. The first electrode is formed so that its outer periphery reaches the outer peripheral edge of th... | 09/17/1996 |
