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)
02/1980
02/20/1980EP0008235A2 Semi-conductive polymeric compositions suitable for use in electrical heating devices; flexible heating cables made by using said compositions and method for making the like cables
02/20/1980EP0008181A1 An arrester for underground systems
02/20/1980EP0008133A2 A thick film resistor composition comprising a temperature coefficient of resistance modifier
02/20/1980EP0008132A1 Resistor and/or conductor composition including an organic vehicle
02/19/1980US4189700 Resistor device
02/12/1980US4188564 Cathode ray tube having low resistance contact area beneath high voltage contact spring
02/12/1980US4188276 Vinyl fluoropolymers and carbon black
02/12/1980CA1071677A1 Self-regulating positive temperature coefficient electrical heating element
02/06/1980EP0007598A1 Method for the manufacture of an electrical film circuit on plastics foil
02/05/1980CA1071281A1 Heat-recoverable laminated heater with ptc layer operating above switching temperature
01/1980
01/29/1980US4186368 Wide range, quick response temperature probe sensor
01/29/1980US4186367 Thick film varistor and method of producing same
01/29/1980CA1070790A1 Film-type resistor with a metal film consisting of aluminium
01/24/1980WO1980000114A1 Voltage non-linear resistive ceramics
01/22/1980US4184984 High breakdown voltage varistor
01/15/1980US4183136 Temperature sensing resistance device
01/09/1980EP0006442A2 Adjustable thin-film resistor
01/08/1980US4183006 Tetracyanoquinodimethan organic salts
01/01/1980US4180901 Compact PTC resistor
12/1979
12/25/1979US4180483 Method for forming zinc oxide-containing ceramics by hot pressing and annealing
12/25/1979US4179797 Method of making a resistor array
12/18/1979US4179680 Temperature sensor
12/04/1979US4177446 Heating elements comprising conductive polymers capable of dimensional change
12/04/1979US4177376 Layered self-regulating heating article
12/04/1979US4176445 Metal foil resistor
11/1979
11/28/1979EP0005481A1 Gas sensors and method for preparing them
11/27/1979US4176336 Lacquer-encapsulated carbon film resistor
11/20/1979US4175061 Method of manufacturing resistor paste
11/20/1979US4175060 Composition and processing procedure for making thermistors
11/20/1979US4174971 Silicon carbide body containing a molybdenum disilicide alloy
11/20/1979CA1066537A1 Termination for electrical resistor and method of making same
11/13/1979US4174530 Voltage surge arrester device
11/13/1979US4174512 Fast response temperature sensor
11/13/1979US4174303 Ceramic electrical material with high nonlinear resistance
11/06/1979US4173731 Glass, inorganic filler, non-oxide compound, carbon
10/1979
10/30/1979US4172922 Conductive particles of zinc oxide and a metal dispersed in glass firt
10/30/1979CA1065496A1 Voltage dependent resistor and the manufacturing process
10/30/1979CA1065125A1 Resistive element having voltage non-linearity and method of making same
10/23/1979US4172249 Resistive electrical components
10/16/1979CA1064248A1 Silicon carbide resistance igniter
10/09/1979CA1063796A1 Resistor material, resistor made therefrom and method of making the same
10/03/1979EP0004351A1 Lightning arrester device
10/03/1979EP0004350A1 Aerial power transmission system
10/03/1979EP0004349A1 A process for manufacturing a surge arrester
10/03/1979EP0004348A1 Lightning arrester device for power transmission line
09/1979
09/25/1979US4169071 Voltage-dependent resistor and method of making the same
09/25/1979US4169032 Method of making a thin film thermal print head
09/18/1979US4168514 Combination circuit breaker-lightning arrestor
09/18/1979CA1062755A1 Layered self-regulating heating article
09/11/1979US4167725 Dew-sensing hygroscopic element
09/11/1979CA1062346A1 Electrical resistor with novel termination and method of making same
08/1979
08/28/1979CA1061472A1 Voltage-dependent resistor
08/21/1979US4165351 Method of manufacturing a metal oxide varistor
08/14/1979US4164607 Thin film resistor having a thin layer of resistive metal of a nickel, chromium, gold alloy
08/14/1979CA1060544A1 Stoichiometric air/fuel ratio exhaust gas sensor
08/07/1979US4164000 Relay-starter electrical device for a prime mover
08/07/1979US4163963 Probe control
07/1979
07/31/1979US4162631 Rare earth or yttrium, transition metal oxide thermistors
07/31/1979CA1059568A1 Colour television display tube
07/24/1979US4162395 Heating unit for heating fluid
07/24/1979CA1059208A1 Thin film thermal print head
07/11/1979EP0002712A2 Metal glas film
07/10/1979US4161012 High voltage protection apparatus
07/10/1979US4160969 Transducer and method of making
07/10/1979US4160897 Ceramic heating element with restivity adjusted to a certain value
07/10/1979US4160748 Non-linear resistor
07/10/1979CA1058327A1 Metal oxide varistor with improved electrical properties
07/03/1979US4160227 Thermistor composition and thick film thermistor
07/03/1979CA1057490A1 High resistance cermet film and method of making the same
06/1979
06/26/1979US4159461 Resistor network having horizontal geometry
06/26/1979US4159459 Non-inductive cylindrical thin film resistor
06/19/1979US4158610 Method and apparatus for determining and controlling amount of carbon deposited on a surface by a gas
06/13/1979EP0002375A1 Oxygen sensor for use in engine fuel control systems
06/05/1979US4157527 Polycrystalline varistors with reduced overshoot
06/05/1979US4157332 Heat-sensitive thiazolium-7,7,8,8-tetracyanoquinodimethane semiconductive materials
06/05/1979CA1056026A1 Resistor composition and method for its manufacture
05/1979
05/22/1979US4155262 Leakage current in prestressed sensor varies as a function of pressure
05/08/1979US4153921 Cooling by vaporization and condensation of fluids
05/08/1979US4153857 Television cathode ray tube having getter flash tolerant internal resistive element
05/08/1979CA1053895A1 Polymer compositions for electrical use
04/1979
04/24/1979US4151503 Temperature compensated resistive exhaust gas sensor construction
04/24/1979US4151401 PTC heating device having selectively variable temperature levels
04/18/1979EP0001520A1 Flat high-precision electrical resistor having an adjustable ohmic value and method of adjusting this ohmic value
04/18/1979EP0001512A1 Gas sensor
04/18/1979EP0001511A1 Thermistor and method of fabrication
04/18/1979EP0001510A1 Gas sensor
04/18/1979EP0001509A1 Variably resistive gas sensor and method of fabrication
04/18/1979EP0001508A1 Thermistor and method of fabricating
04/10/1979US4148761 Useful in making display devices
04/10/1979US4148135 Method of treating metal oxide varistors to reduce power loss
04/10/1979CA1052090A1 Conductor compositions comprising nickel borides
04/03/1979US4148005 Thermometric transducer device
04/03/1979US4147927 Self-regulating heating element
04/03/1979US4147670 Nonohmic ZnO ceramics including Bi2 O3, CoO, MnO, Sb2 O.sub.3
04/03/1979US4146957 Thick film resistance thermometer
04/03/1979CA1052038A1 Acrylic resistive coating composition
03/1979
03/27/1979US4146902 Irreversible semiconductor switching element and semiconductor memory device utilizing the same
03/27/1979US4146867 Adjustable resistors for hybrid circuits
03/27/1979US4146677 Zinc oxide particles dispresed in glass frit
03/20/1979US4145470 Film resistor having a reduced temperature coefficient of resistance