Patents
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)
10/1981
10/06/1981US4293452 Crown ether complex of tetracyanoquinodimethan
10/06/1981CA1110366A1 Fast response temperature sensor
10/06/1981CA1110325A1 Voltage limiting composition and method of fabricating the same
10/01/1981WO1981002812A1 Screened overvoltage shunting device
09/1981
09/29/1981US4292619 Glass particles bonded to a metal oxide; resistors
09/23/1981EP0036247A2 A thin film resistance thermometer element and its method of manufacture
09/23/1981EP0036046A1 Encapsulated overvoltage arrester
09/22/1981CA1109517A1 Enclosed lighting arrester
09/22/1981CA1109246A1 Resistor compositions
09/15/1981US4290041 Voltage dependent nonlinear resistor
09/15/1981CA1109121A1 Surge arrester
09/15/1981CA1108841A1 Filled polymer electrical insulator
09/08/1981US4288776 Passivated thin-film hybrid circuits
08/1981
08/26/1981EP0034511A2 Non linear ceramic resistor having a low threshold voltage, and process for its production
08/25/1981US4286251 Vitreous enamel resistor and method of making the same
08/25/1981US4286250 Laser formed resistor elements
08/25/1981US4286249 Attachment of leads to precision resistors
08/25/1981US4285839 Varistors with upturn at high current level
08/20/1981WO1981002369A1 Lampholder
08/19/1981EP0033804A1 Movable connector for high voltage arrester
08/18/1981US4284970 Fabrication of film resistor circuits
08/18/1981CA1107059A1 Electrically conductive rubber
08/12/1981EP0033420A1 An arrester block assembly and a gapless arrester including same
08/11/1981CA1206507B Electrical devices comprising conductive polymer compositions
08/11/1981CA1106912A1 Lightning arrester device for power transmission line
08/11/1981CA1106890A1 Electrical devices comprising conductive polymer compositions
08/04/1981US4282557 Surge voltage arrester housing having a fragible section
08/04/1981US4282537 Silicon MOS inductor
08/04/1981US4282507 Glass protective coating
07/1981
07/21/1981CA1105550A1 Protective device
07/15/1981EP0032087A2 Plate with a row of resistors with very small spacing
07/14/1981US4278961 Insulating coating for surge arrester valve element
07/14/1981US4278725 Cermet resistor and method of making same
07/14/1981CA1104808A1 Conductive polymer compositions
07/14/1981CA1104807A1 Ptc compositions and devices comprising them
07/09/1981WO1981001880A1 Atmosphere sensing element
07/07/1981US4277673 Electrically conductive self-regulating article
07/07/1981US4277542 Mixture of barium rhodate and other metal oxides in a binder
06/1981
06/30/1981US4276578 Arrester with graded capacitance varistors
06/30/1981US4276535 Thermistor
06/09/1981US4272754 Thin film varistor
06/09/1981US4272471 Method for forming laminates comprising an electrode and a conductive polymer layer
06/09/1981US4272411 Zinc oxide with impurities of bismuth, manganese, cobalt, nickel, antimony oxides and silicon carbide
06/03/1981EP0029749A1 Voltage dependent resistor and method of making same
06/02/1981CA1102103A1 Fuel ignitor comprising a novel silicon carbide composition and process for preparing the composition
05/1981
05/26/1981US4270160 Lightning resistive device in aerial power transmission system
05/26/1981US4270085 Humidity detecting apparatus
05/26/1981US4269898 Comprising at least one metal oxide, thallium rhodate, a low-melting glass or synthetic resin binder, and a temporary organic binder; resistors
05/26/1981US4268954 Method of making non-inductive cylindrical thin film resistor
05/19/1981US4267635 Method of making a solid state electrical switch
05/19/1981CA1101563A1 Voltage responsive switch
05/13/1981EP0028510A1 Oxide thermistor compositions and thermistors containing them
05/13/1981EP0028423A1 Composite thermistor component and applications
05/13/1981EP0028387A1 Temperature sensor
05/12/1981CA1101128A1 Method of adjusting resistance of a thermistor
05/12/1981CA1101068A1 Absolute humidity sensors and methods of manufacturing humidity sensors
05/12/1981CA1101052A1 Arcing stacked plate nonlinear resistor for voltage limiter applications such as series capacitor protection
05/12/1981CA1100749A1 Pre-glassing method of producing homogeneous sintered zno non-linear resistors
05/05/1981US4265844 Method of manufacturing a voltage-nonlinear resistor
04/1981
04/28/1981US4264888 Multipassage resistor and method of making
04/28/1981CA1100235A1 Air temperature sensor connection assembly
04/15/1981EP0026933A2 RC network
04/14/1981US4262318 Zinc-oxide surge arrester
04/14/1981US4262317 Line protector for a communications circuit
04/08/1981EP0026235A1 Process for molding an acetylene high polymer and process for fabrication thereof
04/07/1981US4260872 (doped)lanthanum chromite
03/1981
03/31/1981US4259704 Protective circuit for zinc oxide varistors
03/31/1981US4259666 Apparatus for detecting degradation of characteristics of arresters
03/31/1981US4259657 Self heat generation type positive characteristic thermistor and manufacturing method thereof
03/31/1981US4258569 Self-regulated device for temperature stabilization of at least one connection point, and temperature-controlled plug-in connector for the use of said device
03/24/1981US4258407 Lightning arrester device for power transmission line
03/24/1981US4258080 Method of lowering resistivity of metal oxide semiconductor powder
03/03/1981US4254070 Process for producing sintered body of ceramic composition for voltage non-linear resistor
03/03/1981CA1096605A1 Resistor composition for spark plug having a resistor enclosed therein
02/1981
02/24/1981US4252692 Materials having non-linear electrical resistance characteristics
02/19/1981WO1981000484A1 Fabrication of film resistor circuits
02/17/1981US4251794 Flexible linear thermal array
02/17/1981US4251793 PTC Resistor
02/17/1981US4251792 Thermistor bonded to thermally conductive plate
02/17/1981US4251397 Vehicle for thick film resistors fireable in nonoxidizing atmosphere
02/17/1981US4251225 Using a stannic oxide, antimony trioxide, and platinum oxide compound
02/17/1981CA1096051A1 Reconstituted metal oxide varistor
02/17/1981CA1095962A1 Self heating article with fabric electrodes
02/03/1981US4249224 Surge voltage arrester with fail-safe feature
02/03/1981CA1095181A1 Thick film varistor
02/03/1981CA1094795A1 Conductor compositions comprising aluminum, silicon and glass
01/1981
01/21/1981EP0022611A1 Electrical devices comprising PTC conductive polymer elements
01/20/1981US4246468 Electrical devices containing PTC elements
01/13/1981US4245210 Thick film resistor element and method of fabricating
01/13/1981US4245146 Heating element made of PTC ceramic material
01/13/1981CA1093701A1 Voltage-dependent resistor and method of making the same
01/13/1981CA1093295A1 Electrical heating element composition having improved electrical resistance
01/06/1981US4243622 Method for manufacturing zinc oxide varistors having reduced voltage drift
12/1980
12/30/1980US4242660 Thick film resistors
12/30/1980US4242659 Thin film resistance thermometer detector probe assembly
12/30/1980US4242573 Water immersible heater
12/30/1980US4241494 Method of assembling an electrical device
12/30/1980CA1092725A1 Method of manufacturing a metal oxide varistor
12/23/1980CA1092251A1 Ceramic electrical resistor with nonlinear voltage characteristic
12/23/1980CA1091918A1 Electrical resistor material, resistor made therefrom and method of making the same