| 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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| 10/02/1990 | US4960551 Method of producing modified lead barium titanate ceramic useful as PTC thermistor |
| 09/27/1990 | DE4008752A1 Solid unit of deoxyribonucleic acid crystals - with ohmic resistance falling with increase in temp. |
| 09/26/1990 | EP0388779A2 Cable termination |
| 09/26/1990 | CN1045662A Production process of humidity sensor element formed with the ceramic of compact texture |
| 09/25/1990 | US4959632 Organic PTC thermistor |
| 09/25/1990 | US4959505 Electrical component in chip structure and method for the manufacture thereof |
| 09/25/1990 | US4959262 Zinc oxide varistor structure |
| 09/25/1990 | CA1274589A1 High power density, low corona resistor |
| 09/19/1990 | CN2062506U Lightning arrester |
| 09/12/1990 | EP0386118A1 Apparatus for displaying information |
| 09/11/1990 | US4956320 Positive temperature coefficient semiconductor ceramic |
| 09/11/1990 | US4955267 Method of making a PTC conductive polymer electrical device |
| 09/04/1990 | US4954695 Heater, elongated electrodes, electroconductive polymer |
| 09/04/1990 | US4954692 Positive temperature coefficient thermistor device for a heating apparatus |
| 08/30/1990 | DE3910435A1 Overvoltage protection device |
| 08/28/1990 | US4952904 Smooth metal oxide layer in between platinum layer and silicon nitride substrates: withstands annealing temperature |
| 08/28/1990 | US4952902 Thermistor materials and elements |
| 08/28/1990 | US4951384 Crossliking using radiation |
| 08/28/1990 | US4951382 Crosslinking by radiation |
| 08/23/1990 | DE3905315A1 Electroconductive glass composition |
| 08/22/1990 | CN2060936U Full-electronic lightning arresters for television |
| 08/21/1990 | US4951028 Electrical circuitry; copper oxide ceramics with perovskite structures |
| 08/16/1990 | EP0382447A1 Electrical surge arrester/diverter |
| 08/16/1990 | EP0381927A2 Bidirectional non-linear resistor, active matrix liquid-crystal panel using the same, and method for its production |
| 08/14/1990 | US4949065 Resistor composition, resistor produced therefrom, and method of producing resistor |
| 08/14/1990 | US4949064 Non-linear resistor having a poly (amino acid) membrane |
| 08/14/1990 | US4948953 Holding part for PTC components |
| 08/14/1990 | CA1272589A1 Anti-reducing semiconducting porcelain having a positive temperature coefficient of resistance |
| 08/03/1990 | CA2026574A1 Film resistance terminator |
| 08/01/1990 | EP0379874A1 Securing part for PTC elements |
| 07/24/1990 | US4943795 Oxide resistor |
| 07/24/1990 | US4943456 Microwave reactive heater |
| 07/18/1990 | CN1008828B Method for forming a platinum resistance thermometer |
| 07/17/1990 | US4942364 High speed response, accuracy |
| 07/11/1990 | CN1043830A Method for making zinc metastannate gas-sensitive component for butane |
| 07/10/1990 | US4940961 Braking resistor for a high tension electrical network |
| 07/10/1990 | US4940960 Two-stage sintering of zinc oxide material |
| 07/10/1990 | US4940959 Reversible resistant device |
| 07/10/1990 | CA1271517A1 Filter using zno arresters as small capacitors in normal operation |
| 07/04/1990 | EP0376195A1 Method of producing a self-temperature control flexible plane heater |
| 07/03/1990 | US4939619 Packaged solid-state surge protector |
| 07/03/1990 | US4939498 PTC thermistor device with PTC thermistor unit housed in case |
| 06/27/1990 | EP0375399A2 Adhesion layer for platinum based sensors |
| 06/26/1990 | US4937552 Resistance temperature detector |
| 06/23/1990 | CA2000030A1 Adhesion layer for platinum based sensors |
| 06/20/1990 | EP0373633A2 Polyetheric copolymers, process for preparing the same, compositions containing the same, their molded products, and their use |
| 06/19/1990 | US4935305 Method of forming a plating layer on ceramic chip surfaces and electronic parts thereby manufactured |
| 06/19/1990 | US4935156 Carbon black in polyvinylidene fluoride |
| 06/13/1990 | EP0372552A2 Composite temperature-sensitive element and face heat generator comprising the same |
| 06/13/1990 | EP0372106A1 Surge arrester |
| 06/12/1990 | US4933659 Voltage non-linear resistor and method of producing the same |
| 06/12/1990 | CA1270294A1 Filament wrapped electrical assemblies and method of making same |
| 06/06/1990 | EP0371745A2 Preparation of positive temperature coefficient compositions and their use in protection devices |
| 06/06/1990 | EP0371059A1 Conductive polymer composition |
| 06/06/1990 | CN1042793A Manufacturing method of platinum film for temp. sensor |
| 06/05/1990 | US4931626 PIC thermistor device having heat radiation fins with adjustable temperature regulating guide plates |
| 06/05/1990 | CA1270029A1 Ptc starter for an asynchronous motor |
| 05/30/1990 | EP0370478A2 Thin film for a precision resistor |
| 05/29/1990 | US4930039 Fail-safe surge arrester |
| 05/23/1990 | EP0369826A2 Composition for use in electrical overstress pulse protection and method for preparing such |
| 05/23/1990 | EP0369746A2 Varistor in an electric motor |
| 05/22/1990 | CA1269233A1 Thick film resistor compositions |
| 05/22/1990 | CA1269232A1 Hexaboride resistor composition |
| 05/18/1990 | CA2001740A1 Electrical overstress pulse protection |
| 05/16/1990 | EP0368439A1 Voltage non-linear resistor and method of producing the same |
| 05/15/1990 | US4926284 Lightning protection device for interacting with leader stroke to prevent return stroke |
| 05/09/1990 | CN2057023U High-power curtis glazed resistor |
| 05/08/1990 | US4924340 Circuit protection device |
| 05/08/1990 | US4924205 Chip resistor and method of manufacturing a chip resistor |
| 05/08/1990 | US4924204 Organic PTC thermistor device |
| 05/08/1990 | US4924074 Electrical device comprising conductive polymers |
| 05/01/1990 | US4922242 Apparatus exhibiting PTC behavior useful for displaying information |
| 05/01/1990 | US4920635 A method of manufacturing a thermo-sensitive resistor |
| 05/01/1990 | CA1268510A1 Electrical heaters |
| 04/25/1990 | EP0365057A1 Conductive polymer compositions |
| 04/25/1990 | CN1007764B Film resistance temp. sensor and manufacturing method |
| 04/24/1990 | US4920328 Zinc oxide composites |
| 04/24/1990 | US4919744 Method of making a flexible heater comprising a conductive polymer |
| 04/18/1990 | EP0364292A2 Assembled commutator |
| 04/18/1990 | EP0364095A2 Post-termination process for thick-film resistors of printed-circuit boards |
| 04/18/1990 | EP0363746A1 Overcurrent protection device for electrical networks and apparatuses |
| 04/17/1990 | US4918421 Alternating layers of metal electrode and zinc oxide-based ceramic |
| 04/17/1990 | CA1267943A1 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 04/11/1990 | EP0363191A2 Flat resistance for blower control unit of automobile air conditioner and blower control unit using the same |
| 04/11/1990 | EP0362532A2 Resistance paste and resistive layer made from same |
| 04/11/1990 | EP0362404A1 Method of producing laminated ceramic electronic parts |
| 04/11/1990 | EP0362308A1 Overvoltage protection device and material |
| 04/10/1990 | US4916427 Electronic electrothermal conversion material, its products and method for production thereof |
| 04/10/1990 | US4915778 Method of fabricating an apparatus for measuring velocity of flow |
| 04/05/1990 | WO1990003713A1 Flexible heater comprising a conductive polymer |
| 04/05/1990 | WO1990003651A1 Conductive polymer composition |
| 04/05/1990 | WO1990003650A1 Metallization systems for heater/sensor elements |
| 04/05/1990 | WO1990003420A1 Conductive polymer composition |
| 04/04/1990 | EP0361439A2 Trimming resistor element for microelectronic circuit |
| 04/04/1990 | EP0361420A2 Liquid crystal display device |
| 03/29/1990 | DE3832379A1 Flow sensor |
| 03/28/1990 | CN1007386B Method for making positive temp. coefficient material and apparatus thereof |
| 03/27/1990 | US4912450 Method of producing negative temperature coefficient thermistor units |
| 03/27/1990 | US4912286 Used as resistance heater; corrosion and thermal resistance |
| 03/20/1990 | US4910632 Lightning arrester |