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| Number | Title | Issue Date |
| 7804392 | Switching resistor for an electric switching device A switching resistor for an electric switching device having an electrically conductive resistive material. The resistive material is a resistive material on a synthetic material basis. ... | 09/28/2010 |
| 7341679 | Organic positive temperature coefficient thermistor and manufacturing method therefor An organic positive temperature coefficient thermistor 10 having at least a pair of electrodes 2 and 3 positioned facing each other and a thermistor element 1 having a positive temperature coefficient of resistance which is positioned bet... | 03/11/2008 |
| 7320762 | Polymer compound with nonlinear current-voltage characteristic and process for producing a polymer compound The polymer compound contains a polymer matrix and a filler embedded in the matrix. The filler comprises two filler components with nonlinear current-voltage characteristics deviating from one another. By selection of suitable amounts of these filler components, a p... | 01/22/2008 |
| 7222529 | Filling level sensor for a fuel tank of a motor vehicle The invention relates to a filling level sensor for a fuel tank with a float which is fastened to a lever arm and at least one contact which is arranged on the lever arm and is in connection with a slider track formed as a thick-film resistor. The thick-film resisto... | 05/29/2007 |
| 7188653 | Steel cord and method for producing a steel cord A first aspect of the present invention relates to a filament (11; 12), especially for reinforcing rubber articles. Said filament (11; 12) features a contact surface (14) and an outer surface (13). In a second aspect, the invention relate... | 03/13/2007 |
| 7186356 | Analytical device A sensor for chemical species or biological species or radiation presenting to test fluid a polymer composition comprises polymer and conductive filler metal, alloy or reduced metal oxide and having a first level of electrical conductance when quiescent and being co... | 03/06/2007 |
| 7095310 | Nonlinear resistor and method of manufacturing the same A non-linear resistor comprises a sintered body having zinc oxide as a main component, a side-surface high resistance layer arranged at a side-surface of the sintered body, and an electrode arranged at upper and lower surfaces of the sintered body. The side-surface ... | 08/22/2006 |
| 7034652 | Electrostatic discharge multifunction resistor The present invention provides a multifunction resistor having an improved voltage variable material (“VVM”). More specifically, the present invention provides a polymer VVM that has been formulated with a high percentage loading of conductive and/or semiconduct... | 04/25/2006 |
| 6388553 | Conductive polymer current-limiting fuse Conductive polymer current-limiting fuses. when connected in series with conventional mechanical circuit breakers, exhibit extremely low let-through values. Particularly, conductive polymer current-limiting fuses based on conductive elastomeric material a... | 05/14/2002 |
| 6184770 | Monolithic varistor A monolithic varistor which is small and inexpensive and has excellent varistor characteristics includes a layered ceramic body containing ZnO as a primary component and, based on 100 mol % ZnO, an Al component in an amount of about 100-350 ppm calculated... | 02/06/2001 |
| 5858533 | Composite material A varistor and a PTC resistor formed from a composite material containing a polymer matrix and a filler. The varistor experiences two nonlinear changes caused by the current due to applied voltage, the varistor comprising a composite material comprising a... | 01/12/1999 |
| 5773566 | Resistive material composition, resistive paste, and resistor Disclosed are a resistive paste that can be fired in a neutral or reducing atmosphere to give a resistor having a high sheet resistivity value and a satisfactory TCR value even on low-temperature-sintering substrates, a resistive material composition that... | 06/30/1998 |
| 5726347 | Method for manufacturing an element formed by semiconductor(s) and gas detector provided with such a semiconductor Process for manufacturing a semiconductor element, particularly for a flue gas detector, wherein two or more different substances, at least one of which is a semiconductor in insoluble powder form, are dispersed in powder form in a solvent, and the hetero... | 03/10/1998 |
| 5567358 | Thick film resistor composition The temperature coefficient of resistance (TCR) is made zero with reduced noise in a thick film resistor composition essentially consisting of Pb2 Ru2 O6-7, organic vehicle and non-conductive glass by adding Ta2... | 10/22/1996 |
| 5416462 | Electrical resistance element An electrical resistance element having a resistance body between two contact terminals. The resistance body has PTC behavior and is composed of a polymer matrix and a filler component embedded in the polymer matrix. The filler component is composed of el... | 05/16/1995 |
| 5414403 | Current-limiting component A current-limiting component having an electrical resistance body arranged between two contact terminals. The resistance body contains a first resistance material having PTC behavior. Below a limit temperature, the first resistance material has a low cold... | 05/09/1995 |
| 5341119 | Measurement circuit utilizing a low TCR thick film sense resistor A measurement circuit utilizing a thick film sense resistor containing palladium and silver in a weight ratio of about 56/44 to about 60/40 and a specific glass frit composition so that the sense resistor achieves low resistivity and controlled TCR.... | 08/23/1994 |
| 5231370 | Zinc oxide varistors and/or resistors Varistors and/or resistors that includes doped zinc oxide gel microspheres. The doped zinc oxide gel microspheres preferably have from about 60 to about 95% by weight zinc oxide and from about 5 to about 40% by weight dopants based on the weight of the zi... | 07/27/1993 |
| 5196915 | Semiconductor device In a semiconductor device such as hybrid IC, thermal heads, etc., a thick film resistor of the semiconductor device contains a boride particle of a metal dispersed in a glass matrix, the particle having a particles size of 0.005 to 0.1 μm. Generation of ... | 03/23/1993 |
| 5073689 | Zirconia refractory heating element The present invention provides a zirconia fiber-based or zirconia fiber-reinforced zirconia heating element which can be used in an oxidizing atmosphere at an elevated temperature.... | 12/17/1991 |
| 4746838 | Ink for forming resistive structures and display panel containing the same An ink for use in forming resistive structures for use in a gas discharge display panel containing mercury vapor to inhibit cathode sputtering, the ink comprising a mixture of silver and nickel with the nickel being controllably oxidized to impart the des... | 05/24/1988 |
| 4270114 | Energy transmission devices A device for inclusion in the ignition current circuit of internal combustion engines in which a body of electrically conductive, irregularly shaped metal granules forms a flowpath in the form of a labyrinth between a pair of end terminals. Compaction pre... | 05/26/1981 |
| 4188607 | Variable impedance device A variable impedance device which serves to improve performance and reduce radio frequency emissions in electrically fired internal combustion engines employs a mixture of granulated or powdered bronze, or the constituents of bronze and of silica compacte... | 02/12/1980 |
| 4028591 | Relay contact protector A polyconductor device is connected in series with a pair of current carrying contacts of a relay switch to delay the current surge through the contacts during the closure thereof. The polyconductor device has a negative temperature-resistance characteris... | 06/07/1977 |
