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)
03/1992
03/22/1992CA2051824A1 Thermistor having a negative temperature coefficient in multi-layer technology
03/19/1992WO1992004720A1 Positive characteristic thermistor and manufacturing method therefor
03/19/1992WO1992004718A1 Flame retardant conductive polymer composition device
03/19/1992DE4029107A1 Varistors with improved radial resistance distribution - comprises differing ceramic compsn. for centre and mantle for cylinder for high energy dissipation
03/19/1992DE4029106A1 High performance zinc-oxide varistors mfr. - by impregnating parts after firing binder with antimony contg. soln., drying and sintering the part
03/17/1992US5096620 Lead-zinc-borosilicate glass
03/10/1992US5095239 Varistor in an electric motor
03/10/1992US5095227 MOS transistor temperature detecting circuit
03/10/1992CA1297140C2 Tape element and methods, for heating, pressure measurement and circuit fabrication
03/10/1992CA1296878C Electrical overstress protection material and process
03/05/1992WO1992003833A2 Thin-film resistance temperature device
03/05/1992WO1992003711A1 Temperature sensor and process for producing temperature-sensor elements
03/04/1992EP0473419A2 Voltage non-linear resistor and method of producing the same
03/04/1992CN2098077U Feedthrough voltage-dependent
03/03/1992US5093898 Electrical device utilizing conductive polymer composition
03/03/1992US5093647 Sliding electric parts
03/03/1992US5093555 Electrical resistance; internal combustion engines
03/03/1992US5093036 Conductive polymer composition
03/03/1992CA1296515C Resistor compositions
02/1992
02/26/1992EP0472259A2 Voltage non-linear resistor for gapped lightning arresters and method of producing the same
02/26/1992EP0289582B1 Method for preparing a metal oxide varistor precursor powder
02/25/1992CA1296382C Metal-encapsulated gas-insulated high-voltage installation with an overvoltage arrester
02/19/1992EP0471138A2 Process for producing an electrical measuring resistor
02/18/1992US5089802 Diamond thermistor and manufacturing method for the same
02/18/1992US5089801 Self-regulating ptc devices having shaped laminar conductive terminals
02/18/1992US5089688 Composite circuit protection devices
02/18/1992US5089293 Method for forming a platinum resistance thermometer
02/18/1992CA1296043C Electrical devices comprising conductive polymers
02/18/1992CA1295807C Coprecipitation method for the manufacture of zinc oxyde based doped powders
02/12/1992EP0470262A1 Copper alloy composition
02/11/1992US5088001 Surge arrester with rigid insulating housing
02/06/1992WO1992001631A1 Method for producing doped zinc oxide powder, and powder obtained
02/05/1992EP0469638A2 A power detector comprising a thin film conductor
02/04/1992US5086286 Gas-sensitive device
02/04/1992US5085804 Sintered mixture of molybdenum disilicide, silicon carbide and silicon nitride; igniter
01/1992
01/28/1992US5084426 Semiconductive ceramic composition
01/22/1992EP0467133A2 Temperature sensor or sensing devices made of glass-ceramics with contacting film-resistances
01/22/1992CN2094099U High-stability energy-saving semiconductor gas-sensitive sensor
01/21/1992CA1294715C Variable resistance thermal protector and method of making same
01/21/1992CA1294398C Process for producing self-restoring overcurrent protective device by grafting method
01/14/1992US5081439 Thin film resistor and method for producing same
01/14/1992US5081438 Thermistor and its preparation
01/14/1992US5081405 Electrical actuator with means for preventing dither at a limit switch
01/09/1992WO1992000593A1 Method of manufacturing a metal oxide varistor with improved energy capability
01/07/1992US5079037 Resistive films comprising resistive short fibers in insulating film forming binder
01/07/1992US5078914 Melamine resin, polyester, acid catalyst, crosslinking, oil and fuel resistance
01/02/1992EP0463549A1 Surface resistor for anemometer
01/01/1992CN2092135U Communication security device using thermistor with positive temp coefficient
12/1991
12/31/1991US5076979 Sintering zinc oxide and manganese compound
12/24/1991US5075666 Varistor composition for high energy absorption
12/24/1991US5075665 Laminated varistor
12/24/1991US5075282 Printing method of forming oxide superconducting films on La2 Cu O.sub.
12/18/1991EP0461864A1 Self-resetting overcurrent protection element
12/17/1991US5073302 Varistor material and process for production therefor
12/17/1991CA1293294C Zinc oxide type lightning-conducting element
12/17/1991CA1293293C Lightning arrestor insulator
12/17/1991CA1293118C Voltage non-linear resistor and its manufacture
12/12/1991WO1991019297A1 Method of manufacturing an electrical device
12/11/1991EP0460790A1 Conductive polymer composition and electrical device
12/05/1991CA2037156A1 Conductive polymer composition and electrical device
12/04/1991EP0458958A1 Bubble jet print head having improved multiplex actuation construction.
12/04/1991CN1015035B Ptc thermistor device
12/03/1991US5070326 Zinc oxide varistor particles, improved contrast
12/03/1991US5069824 Oxides of the pyrochlore family and electrically resistant materials that contain them
11/1991
11/26/1991US5068634 Overvoltage protection device and material
11/26/1991US5068518 Self-temperature control flexible plane heater
11/26/1991CA1292503C Surge protector for telecommunications terminals
11/19/1991US5066938 Diamond film thermistor
11/14/1991WO1991017554A1 Surge arrester
11/12/1991US5065221 Trimming resistor element for microelectronic circuit
11/12/1991US5064997 Composite circuit protection devices
11/12/1991US5064573 Resistive paste comprising oxides of ruthenium, lead, iron and zinc
11/12/1991CA1291905C Electronic device fabrication on non-conductive polymer substrate
11/12/1991CA1291885C Metal film resistors
11/12/1991CA1291883C Hot wire air flow meter
11/09/1991WO1991017553A1 Low voltage varistor array
11/09/1991WO1991017472A1 Varistor driven liquid crystal display
11/09/1991CA2082384A1 Varistor driven liquid crystal display
11/09/1991CA2082383A1 Low voltage varistor array
11/06/1991EP0454857A1 Small dc motor
11/05/1991US5062993 Process for fabricating doped zinc oxide microsphere gel
10/1991
10/30/1991EP0454422A2 PTC device
10/30/1991CN1014571B Method for making zinc metastannate gas
10/29/1991US5061550 Multilayer material having a resistance layer formed on an electrically conductive layer and a multilayer board for a printed circuit board which has a resistance layer
10/27/1991WO1991016607A1 Semiconductor film bolometer thermal infrared detector
10/26/1991CA2040789A1 Ptc device
10/23/1991EP0452511A1 Zinc oxide varistor, manufacture thereof, and crystallized glass composition for coating
10/22/1991US5059941 Electrode structure for a thick film resistor
10/22/1991CA1291277C Encapsulated thermal protector
10/16/1991EP0452141A2 The determination of a characteristic of a medium
10/15/1991US5057964 Surge protector for telecommunications terminals
10/15/1991US5057673 Self-current-limiting devices and method of making same
10/10/1991CA2014315A1 Non-linear resistance element
10/09/1991CN1014280B Method for mfg. platinum film of temp. sensor
10/08/1991CA1290465C Polymer type ptc assembly
10/04/1991WO1991015863A1 Pre-engineered electrode/dielectric composite film and related manufacturing process for multilayer ceramic chip capacitors
10/04/1991CA2078230A1 Pre-engineered electrode/dielectric composite film and related manufacturing process for multilayer ceramic chip capacitors
10/03/1991CA2038720A1 Arrester
10/01/1991US5053908 Psc motor start system
10/01/1991US5053739 Very high energy absorbing varistor