| 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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| 02/28/1989 | US4809124 High-energy low-voltage surge arrester |
| 02/28/1989 | US4808967 Circuit board material |
| 02/28/1989 | US4808398 Narrow size distribution zinc oxide |
| 02/28/1989 | CA1250628A1 Electrically insulating articles |
| 02/22/1989 | EP0304203A1 Voltage non-linear resistor |
| 02/22/1989 | EP0304196A2 Electric motor armature current control circuit |
| 02/22/1989 | CN2033153U Thermal resistance infrared radiation sensor |
| 02/21/1989 | US4806900 Thermistor and method for producing the same |
| 02/21/1989 | US4805296 Method of manufacturing platinum resistance thermometer |
| 02/21/1989 | CA1250155A1 Platinum resistance thermometer |
| 02/15/1989 | CN1031150A Ptc thermister for start of refrigerator compressor and its preparation |
| 02/14/1989 | US4805064 Lightning arrester having a housing with a high filler content |
| 02/14/1989 | US4804940 Resistor and electron device employing the same |
| 02/08/1989 | EP0302294A1 Component with fillable layers comprising a sintered monolithic ceramic body, and method of making it |
| 02/08/1989 | EP0302274A1 Electrical multilayer component and method of making it |
| 02/07/1989 | US4803588 Surge arrester |
| 02/07/1989 | US4803457 Compound resistor and manufacturing method therefore |
| 02/02/1989 | EP0224572A4 Circuit board material and process of making. |
| 02/01/1989 | CN1030842A Electrical overstress protection material and process |
| 01/31/1989 | US4801784 Electrical device comprising a PTC or NTC composition |
| 01/31/1989 | CA1249668A1 Composite self-regulating temperature sensitive device |
| 01/31/1989 | CA1249432A1 Resistor compositions |
| 01/26/1989 | WO1989000755A1 Conductive polymer composition |
| 01/26/1989 | WO1989000754A1 Process for manufacturing a material having predetermined dielectric, pyroelectric and/or magnetic properties and its use |
| 01/26/1989 | DE3802150A1 Verfahren zum herstellen eines bezueglich seiner dielektrischen, pyroelektrischen und/oder magnetischen eigenschaften vorgebbaren materials und dessen verwendung A process for the manufacture of a with respect to its dielectric, pyroelectric and / or magnetic properties of the material and its use predeterminable |
| 01/25/1989 | EP0300810A2 Process for producing self-restoring over-current protective device by grafting method |
| 01/24/1989 | US4800253 Multilayer, olefin polymer with metal foil |
| 01/18/1989 | EP0299629A2 Encapsulated temperature sensor |
| 01/17/1989 | CA1248749A1 Resistor compositions |
| 01/10/1989 | US4797194 Electrochemical element |
| 01/03/1989 | US4796149 Lightning arrestor insulator |
| 01/03/1989 | US4795658 Method of metallizing ceramic material |
| 01/03/1989 | US4794795 Directional thermal anemometer transducer |
| 12/27/1988 | US4794485 Voltage surge protector |
| 12/27/1988 | US4794367 Circuit arrangement |
| 12/20/1988 | US4792877 Electric motor armature current control circuit |
| 12/20/1988 | US4792782 Apparatus and method for providing improved resistive ratio stability of a resistive divider network |
| 12/13/1988 | US4791398 Protective covering resists diffusion of contaminants but allows diffusion of oxygen |
| 12/13/1988 | US4790182 Coiled platinum wire overcoated with glass; improved transient response characteristics |
| 12/06/1988 | US4789850 Temperature sensor construction and method of making the same |
| 12/01/1988 | WO1988009556A1 Surge absorbing device |
| 11/30/1988 | CN88102279A Aluminium-titanium film-resistor temp. sensor and its production method |
| 11/29/1988 | US4788622 Device for indicating the short-circuiting of a lightning arrester |
| 11/29/1988 | US4787135 Method of attaching leads to PTC devices |
| 11/24/1988 | DE3812195A1 Temperatursensor Temperature sensor |
| 11/22/1988 | US4786888 Thermistor and method of producing the same |
| 11/15/1988 | US4785276 Voltage multiplier varistor |
| 11/15/1988 | US4785275 Strain gauge |
| 11/09/1988 | EP0289618A1 Electric resistor equipped with thin film conductor and power detector |
| 11/09/1988 | EP0289582A1 Method for preparing a metal oxide varistor precursor powder. |
| 11/02/1988 | CN87102932A Method for making positive temp. coefficient material and apparatus thereof |
| 11/01/1988 | US4782423 Lightning arrester |
| 11/01/1988 | US4781859 Voltage-dependent non-linear resistance ceramic composition |
| 11/01/1988 | CA1244144A1 Positive temperature coefficient thermistor device |
| 10/26/1988 | EP0140893B1 Self-limiting heater and resistance material |
| 10/26/1988 | EP0135534B1 Thick film resistor circuits |
| 10/25/1988 | US4780790 Electric device |
| 10/25/1988 | US4780702 Chip resistor and method for the manufacture thereof |
| 10/25/1988 | US4780598 Composite circuit protection devices |
| 10/25/1988 | US4780306 Applying catalyst to surface, heating |
| 10/25/1988 | US4780248 Thick film electronic materials |
| 10/25/1988 | US4780247 Method for controlling steady state exothermic temperature in the use of heat sensitive-electrically resistant composites |
| 10/20/1988 | DE3711160A1 Circuit arrangement |
| 10/19/1988 | EP0287485A1 Positive temperature coefficient material |
| 10/18/1988 | US4779162 For use in an electrical apparatus |
| 10/18/1988 | US4779103 Injecting blend of polystyrene, polyethylene oxide, plasticizer; flowability at lower temperature |
| 10/18/1988 | CA1243415A1 Vent hole assembly |
| 10/18/1988 | CA1243196A1 Electrical resistance compositions and methods of making the same |
| 10/13/1988 | DE3710359A1 Device for monitoring varistors integrated in a circuit |
| 10/11/1988 | US4777351 Electric sheet heater |
| 10/05/1988 | EP0285298A1 A method of manufacturing a conductive or superconductive thin film |
| 10/05/1988 | CN88100808A 电涌放电器 Surge arresters |
| 10/04/1988 | US4775778 Positive temperature coefficient-crosslinked elastomer and electroconductive particles |
| 10/04/1988 | CA1242759A1 Zinc oxide lightning protector |
| 09/27/1988 | US4774491 Nickel-aluminum alloy |
| 09/27/1988 | US4774024 Conductive polymer compositions |
| 09/21/1988 | CN88101639A Compound resistor and manufacturing method therefor |
| 09/20/1988 | US4772866 Device including a temperature sensor |
| 09/20/1988 | US4772520 Thermal head and method of manufacturing the same |
| 09/14/1988 | EP0281945A1 Manufacturing process for a lightning arrester |
| 09/13/1988 | US4771271 Silicon based low level liquid sensor having a fast response time |
| 09/13/1988 | US4770036 Apparatus for measuring velocity of flow |
| 09/13/1988 | US4769901 Method of making PTC devices |
| 09/06/1988 | US4769094 Amorphous-nickel-base alloy electrical resistors |
| 09/06/1988 | CA1241769A1 Materials for packaging, circuit protection devices |
| 08/31/1988 | EP0280362A2 Thin film heating element |
| 08/31/1988 | EP0280189A1 Surge arrester |
| 08/31/1988 | EP0280116A2 Lighting protection apparatus |
| 08/30/1988 | US4767729 Process for the preparation of a voltage-dependent ceramic resistance based on ZnO, and a resistance produced by the process |
| 08/30/1988 | US4767582 Method of manufacturing voltage nonlinear resistance elements |
| 08/25/1988 | WO1988006064A1 Electronic device fabrication by selective doping of a non-conductive polymer |
| 08/24/1988 | EP0278957A1 Electrical overstress protection material and process |
| 08/24/1988 | CN87217071U Zinc oxide pressure sensitive resistor |
| 08/23/1988 | US4766411 Alternating depositing different metallic compositions |
| 08/23/1988 | US4766409 Thermistor having a positive temperature coefficient of resistance |
| 08/23/1988 | US4766008 Method of manufacturing thin film conductor which contains silicon and germanium as major components |
| 08/18/1988 | DE3703465A1 Mfg. switching unit using PTC or NTC resistor element - using mounting unit to hold latter and contacts in correct position before plastics material is moulded round |
| 08/17/1988 | EP0278585A1 Packaged solid state surge protector |
| 08/17/1988 | EP0278390A2 Thick film electronic materials |
| 08/17/1988 | CN87215730U High-voltage zno pressure-sensitive resistor |