Class 338/223 - GRANULAR OR POWDERED ELEMENT

Subclass of Class 338 - Electrical resistors
Definition: Subject matter wherein the resistance element is granular
No. of patents: 25
Last issue date: 10/07/2008

Number	Title	Issue Date
7432526	Surface-passivated zinc-oxide based sensor A semiconductor device has a heterostructure including a first layer of semiconductor oxide material. A second layer of semiconductor oxide material is formed on the first layer of semiconductor oxide material such that a two dimensional electron gas builds up at an...	10/07/2008
7075404	Porcelain composition for varistor and varistor A varistor is provided which can be driven at a low voltage, has a small leak current, and can realize a high ESD resistance and a high surge resistance. The varistor is formed using a ceramic composition for a varistor which contains zinc oxide as a primary compone...	07/11/2006
7034652	Electrostatic discharge multifunction resistor The present invention provides a multifunction resistor having an improved voltage variable material (“VVM”). More specifically, the present invention provides a polymer VVM that has been formulated with a high percentage loading of conductive and/or semiconduct...	04/25/2006
6554609	Nanotechnology for electrical devices Nanostructured non-stoichiometric non-equilibrium materials are disclosed. Novel electromagnetic materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for develop...	04/29/2003
6459072	Glow plug for internal combustion engines A glow plug for internal-combustion engines, comprising: a metal body (12); a metal sheath (24) having one closed end (26) and one open end (28); a terminal (30) extending through the open end (28) of the sheath (24); a conductive powder (34) set in elect...	10/01/2002
6211496	Molybdenum disilicide heating element and its production method The MoSi2 heating element has not been so resistant under the low-temperature heating, because the low-temperature oxidation, which is attributable to the grain boundary oxidation, occurred. In the present invention, long life under the low-tem...	04/03/2001
6083426	Conductive paste A conductive paste having excellent printing properties, which can be used for manufacturing heat-resistant conductors and resistive elements, is described. Such a conductive paste can be obtained by preparing as a binder a polyimide precursor whose weigh...	07/04/2000
5858533	Composite material A varistor and a PTC resistor formed from a composite material containing a polymer matrix and a filler. The varistor experiences two nonlinear changes caused by the current due to applied voltage, the varistor comprising a composite material comprising a...	01/12/1999
5416462	Electrical resistance element An electrical resistance element having a resistance body between two contact terminals. The resistance body has PTC behavior and is composed of a polymer matrix and a filler component embedded in the polymer matrix. The filler component is composed of el...	05/16/1995
5231370	Zinc oxide varistors and/or resistors Varistors and/or resistors that includes doped zinc oxide gel microspheres. The doped zinc oxide gel microspheres preferably have from about 60 to about 95% by weight zinc oxide and from about 5 to about 40% by weight dopants based on the weight of the zi...	07/27/1993
5228460	Low mass radial array heater for electrical smoking article A heating element to provide heat to a tobacco flavor medium, for use in an electrical smoking article, by converting electrical energy to heat through the use of a material with electrically resistive properties is provided. The material is arranged in a...	07/20/1993
5218335	Electronic circuit device having thin film resistor and method for producing the same In an electronic circuit device, a thin film resistor is formed on a substrate and includes first regions including one kind of atom such as Cr and exhibiting an electric conductivity and a second region including a compound such as SiO2 compos...	06/08/1993
5182540	Electrical resistor element and method of manufacturing the same A resistor element includes a hollow cylindrical sintered body and a pair of electrodes formed on the upper and lower surfaces of the sintered body. The sintered body contains ferrite as a main constituent and contains 0.05 to 10% by volume of an insulato...	01/26/1993
5073689	Zirconia refractory heating element The present invention provides a zirconia fiber-based or zirconia fiber-reinforced zirconia heating element which can be used in an oxidizing atmosphere at an elevated temperature....	12/17/1991
4687903	Thermostatically controlled electrically heated soldering bit A soldering iron bit is heated by an electrical heating element including a resistive element consisting of granular boron carbide packed in a quartz tube embedded in a piece of copper. A first power lead is electrically connected to the boron carbide at ...	08/18/1987
4633069	Heat-exchanger A body comprising a ceramic electrical resistance material of positive temperature coefficient of resistivity adapted to display a sharp increase in resistivity when heated to a selected temperature has passages extending through the body between opposite...	12/30/1986
4418327	Arc limiting refractory resistive element An arc limiting refractory resistive element is fabricated from aluminum oxide, carbon black and a sintering aid. The fabricating process includes compacting a mixture of the materials, sintering the compact in an inert atmosphere, then oxidizing the oute...	11/29/1983
4359414	Insulative composition for forming polymeric electric current regulating junctions An electric current regulating junction that can be electrically activated to a low resistance state in which it is capable of passing a relatively low reading current. The junction is capable of being activated electrically so as to be switched between l...	11/16/1982
4292619	Resistance material Corpuscular material which, while using a whether or not reacting binder, can be processed to resistor bodies. The material consists of corpuscular carrier material of inert oxidic material or, possibly, resistance-determining material, at the surface of ...	09/29/1981
4250397	Heating element and methods of manufacturing therefor The heating element includes a flexible graphite fiber-loaded impregnated paper saturated with a binder to ensure and maintain intimate electrical contact between the graphite fibers. In one form, two segments of the graphite fiber-loaded paper are couple...	02/10/1981
4237441	Low resistivity PTC compositions Compositions which exhibit PTC behavior with a switching temperature (Ts) above 0° C., which have a resistivity at a temperature below Ts of less than 7 ohm. cm, and which comprise a crystalline polymer and a particulate filler comp...	12/02/1980
4188607	Variable impedance device A variable impedance device which serves to improve performance and reduce radio frequency emissions in electrically fired internal combustion engines employs a mixture of granulated or powdered bronze, or the constituents of bronze and of silica compacte...	02/12/1980
4125822	Probe for determining organic liquids The presence of an organic liquid is detected by means of a probe which comprises a rubber-like material which is swellable in an organic liquid, which rubber-like material has electrically-conductive solid particles distributed therethrough, in such conc...	11/14/1978
4019021	Electric resistance fluid heating apparatus A resistance heating apparatus for rapidly heating a liquid or gas to a desired temperature includes a porous mat of fine electrically-conductive elongated elements selected from the group consisting of metal coated non-metal whiskers and polycrystalline ...	04/19/1977
3982100	Monolithic honeycomb form electric heating device A monolithic electrical resistance heater element is produced from mixing particles of a conductive carbonaceous pyropolymer that have been deposited on a refractory metal oxide with a heat unifiable ceramic, such as alumina, cordierite, spodumene, etc., ...	09/21/1976

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Class 338/223 - GRANULAR OR POWDERED ELEMENT