| Patents for H01C 7 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material (13,712) |
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| 09/12/1989 | US4866253 Electrical devices comprising conductive polymer compositions |
| 09/05/1989 | US4864456 Method of manufacturing a lightning arrester and a lightning arrester obtained by the method |
| 09/05/1989 | US4864106 Heating resistor |
| 09/05/1989 | CA1258981A1 Method for forming a platinum resistance thermometer |
| 08/30/1989 | EP0330210A2 Resistive metal layers and method for making same |
| 08/29/1989 | US4861966 Method and apparatus for electrically heating diesel fuel utilizing a PTC polymer heating element |
| 08/24/1989 | WO1989006859A3 Overvoltage protection device and material |
| 08/23/1989 | EP0329436A2 Moisture and dew-detection sensor |
| 08/22/1989 | US4859981 Electrical resistor device |
| 08/22/1989 | US4859980 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 08/22/1989 | US4859836 Melt-shapeable fluoropolymer compositions |
| 08/16/1989 | EP0327860A1 Electrical component of the chip type, and method of making the same |
| 08/16/1989 | EP0327828A2 Resistance masses for firing under nitrogen |
| 08/16/1989 | CN1034822A Production method of zinc oxide resistor chip |
| 08/15/1989 | US4857880 Electrical devices comprising cross-linked conductive polymers |
| 08/15/1989 | US4857711 Positive temperature coefficient heater |
| 08/15/1989 | US4857384 Mixtures of heat resistant resins, oxides of vanadium and/or chromium; for heating elements with uneven or curved surfaces |
| 08/08/1989 | US4855708 Voltage non-linear resistor |
| 08/02/1989 | EP0326212A1 Chip resistor and method of manufacturing a chip resistor |
| 08/01/1989 | US4853671 Electric laminar resistor and method of making same |
| 08/01/1989 | US4853670 Surge arrester |
| 08/01/1989 | CA1258139A1 Ptc thermal protector |
| 07/27/1989 | WO1989006859A2 Overvoltage protection device and material |
| 07/26/1989 | EP0324890A1 Printed wiring board |
| 07/25/1989 | US4851955 Electrical surge arrester/diverter having a heat shrink material outer housing |
| 07/25/1989 | US4851808 Heat-generating resistor and heat-generating resistance device by use of said heat-generating resistor |
| 07/19/1989 | EP0324555A2 Substrate for hybrid IC, hybrid IC using the substrate and its application |
| 07/19/1989 | EP0323990A1 Process for manufacturing a material having predetermined dielectric, pyroelectric and/or magnetic properties and its use |
| 07/19/1989 | CN1034107A High power electrothermal convertor and processing technique thereof |
| 07/18/1989 | US4849133 PTC compositions |
| 07/12/1989 | EP0323827A2 Electronic electrothermal conversion material, its products and method for production thereof |
| 07/11/1989 | US4847445 Zirconium thin-film metal conductor systems |
| 07/11/1989 | US4845838 Method of making a PTC conductive polymer electrical device |
| 06/28/1989 | EP0322338A2 High temperature sensing apparatus |
| 06/28/1989 | EP0322211A2 Highly densified voltage non-linear resistor and method of manufacturing the same |
| 06/27/1989 | US4842372 Electro-optical device having an amorphous silicon resistive element with carbon |
| 06/27/1989 | US4841769 Apparatus for measuring velocity of flow |
| 06/21/1989 | EP0320824A2 Glaze Resistor |
| 06/21/1989 | CN2039870U Resistance type selectivity heat conducting methane sensing element |
| 06/20/1989 | US4841273 High temperature sensing apparatus |
| 06/20/1989 | US4841259 Wave propagation structures for eliminating voltage surges and absorbing transients |
| 06/20/1989 | CA1256173A1 Electrical conductor coated with an inorganic conductive layer |
| 06/14/1989 | EP0320196A2 Voltage non-linear type resistors |
| 06/13/1989 | US4839097 Voltage-dependent non-linear resistance ceramic composition |
| 06/07/1989 | EP0319450A2 Polymer type PTC assembly |
| 06/06/1989 | US4837550 Alloy containing rare earth and transition metal elements |
| 05/30/1989 | US4835508 Zinc oxide type lightning-conducting element |
| 05/30/1989 | US4835059 Thin film conductor which contains silicon and germanium as major components and method of manufacturing the same |
| 05/30/1989 | US4834052 Barium titanate, flux containing silica, alumina, titania |
| 05/24/1989 | EP0317256A2 A printed circuit substrate |
| 05/24/1989 | CN1004310B Thick film resistor compositions |
| 05/23/1989 | US4833438 Method of manufacturing a lightning arrester, and a lightning arrester obtained by the method |
| 05/18/1989 | WO1989004532A1 Apparatus for displaying information |
| 05/17/1989 | EP0316015A2 Material for resistor body and non-linear resistor made thereof |
| 05/17/1989 | EP0315700A1 Surge absorbing device |
| 05/16/1989 | US4831354 Polymer type PTC assembly |
| 05/16/1989 | US4830173 Indexing apparatus for aligning articles in parallel rolls |
| 05/09/1989 | US4828370 Liquid crystal display |
| 05/03/1989 | EP0313699A1 Thermal detector and method of making the same |
| 05/02/1989 | US4827370 Enclosure for electric device, in particular for surge arrester, including a molded, electrically insulating envelope |
| 05/02/1989 | US4825694 Apparatus for measuring velocity of flow |
| 05/02/1989 | US4825535 Method of manufacturing a resistor element |
| 04/27/1989 | DE3733860A1 Thin-film resistor |
| 04/25/1989 | US4825188 Method of manufacturing a lightning arrester, and a lightning arrester obtained by the method |
| 04/25/1989 | US4824694 Cermet resistive element for variable resistor |
| 04/20/1989 | DE3734214A1 Arrangement for disconnecting a varistor |
| 04/19/1989 | EP0312485A2 Encapsulated thermal protector |
| 04/18/1989 | US4823106 Tape element and methods, for heating, pressure measurement and circuit fabrication |
| 04/18/1989 | US4822983 Electrical heaters |
| 04/18/1989 | US4822638 Electronic device fabrication on non-conductive polymer substrate |
| 04/12/1989 | EP0311142A2 Radiation cross-linking of ptc conductive polymers |
| 04/12/1989 | EP0310748A1 Device for detecting the filling level in liquid containers |
| 04/06/1989 | WO1989003162A1 Electrical device comprising conductive polymers |
| 04/06/1989 | WO1989003115A1 Ntc temperature-sensing device and process for producing ntc temperature-sensing elements |
| 04/06/1989 | WO1989003033A1 Ptc temperature sensors, process for producing ptc temperature-sensing elements for ptc temperature sensors |
| 04/05/1989 | EP0310450A1 High frequency heating apparatus |
| 04/04/1989 | US4819128 Electrical multilayer component comprising a sintered, monolithic ceramic body and method for its manufacture |
| 04/04/1989 | US4818439 PTC compositions containing low molecular weight polymer molecules for reduced annealing |
| 03/30/1989 | DE3815666A1 Plug-in overvoltage suppressor |
| 03/28/1989 | US4816959 Containing zinc oxide |
| 03/23/1989 | WO1989002647A1 Electrical resistance element of molybdenum disilicide type |
| 03/22/1989 | EP0308209A2 Ceramic resistance elements |
| 03/22/1989 | EP0153412B1 Voltage-dependent, non-linear resistor porcelain composition |
| 03/21/1989 | US4814936 Grounding tank type arrester |
| 03/21/1989 | US4814107 Nitrogen fireable resistor compositions |
| 03/15/1989 | EP0307217A1 Positive temperature coefficient thermistor device for heating apparatus |
| 03/15/1989 | EP0307207A2 Heat recoverable article |
| 03/15/1989 | EP0307206A2 Heat recoverable article |
| 03/15/1989 | EP0307205A2 Conductive polymer composition |
| 03/15/1989 | EP0307199A2 Heat recoverable article |
| 03/15/1989 | EP0307198A2 Conductive polymeric article |
| 03/15/1989 | EP0307165A2 Positive temperature coefficient thermistor device |
| 03/15/1989 | EP0307007A2 Making electrical contact between metals and resistive elements |
| 03/14/1989 | US4812944 Electrical equipment |
| 03/14/1989 | US4811478 Self-supporting, zinc oxide core |
| 03/09/1989 | DE3729013A1 Circuit arrangement having a varistor as overvoltage protection for a component which contains an electrical circuit |
| 03/08/1989 | EP0306338A1 Electro-optical device |
| 03/07/1989 | US4811164 Monolithic capacitor-varistor |
| 03/07/1989 | CA1250961A1 Conductive polymer devices having leads with reduced resistance to bending |
| 03/01/1989 | EP0304690A1 Production process for a lightning arrester, and lightning arrester obtained by this process |