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Class 361/321.5 - Composition


Subclass of Class 361 - Electricity: electrical systems and devices
Definition: Subject matter wherein the material of the constituents
No. of patents: 474
Last issue date: 01/31/2012


                    12  
NumberTitleIssue Date
4485180High frequency dielectric ceramic compositions
A high frequency dielectric ceramic composition is described, said composition being represented by the formula: Ba(Zrx Zny Taz)O7/2-x/2-3y/2, wherein 0.02ࣘxࣘ0.13, 0.28ࣘyࣘ0.33 and 0.59ࣘzࣘ0.65 (where ...
11/27/1984
4484251Current restriction element responsive to applied voltage
A current restriction device for alternate circuit with small size, low producing cost and low power loss has been found by using a ferro-electric body with rectangular hysterisis characteristics. Said device is used for instance as a ballast for restrict...
11/20/1984
4482934Temperature compensating titanate ceramic capacitor with nickel or copper electroless metal electrodes
A ceramic dielectric composition for temperature compensating capacitors comprising 64-70.5% by weight of SrTiO3, 28-34% by weight of CaTiO3 and 1.5-4.5% by weight of Bi2 O3 or Bi2 O3.nTiO.sub.2
11/13/1984
4475144Dielectric ceramic of barium titanate, lithium oxide and zinc fluoride, a capacitor and a process
The present invention provides a dielectric ceramic composition having excellent electric properties and able to be sintered at a temperature between 750° and 1000° C. According to the invention, said composition comprises from 90 to 98% by weight of ba...
10/02/1984
4468472Composition for ceramic dielectrics
A composition for ceramic dielectrics comprising BaO, CeO2, ZrO2, CaO and TiO2 in sintered state. The composition can also contain at least one of MnO2, Cr2 O3, FeO, NiO, and CoO as additive. ...
08/28/1984
4461844Ceramic composition of high dielectric constant
A ceramic composition of a high dielectric constant is provided, which consists of 100 mol parts of barium metatitanate (BaTiO3), (2/3)(7&#b1;1) mol parts of cerium dioxide, and 7&#b1;1 mol parts of titanium dioxide (TiO2), and to wh...
07/24/1984
4460936Condenser
A condenser including a dielectric material exhibiting a ferroelectric phase wherein the dielectric constant-temperature characteristic of the condenser exhibits hysteresis loss of not more than 5% is provided. The dielectric constant-temperature characte...
07/17/1984
4447855Dielectric ceramic composition on the base of thermally stable barium titanate and capacitor using such composition
The invention relates to dielectric ceramic compositions on the base of barium titanate, allowing class BX capacitors to be used. According to the invention, the compositions are characterized in that they comprise from 80 to 94% by weight barium titanate...
05/08/1984
4447853Ceramic capacitor
There is disclosed a ceramic capacitor comprising a polycrystalline ceramic dielectric material disposed between electrodes of conductive material with the polycrystalline ceramic dielectric material having a thickness not more than 30 μm and a particle ...
05/08/1984
4439814Laser adjustable capacitor and fabrication process
A thick film hybrid circuit capacitor particularly suitable for laser trimming and a process for its fabrication. The fabrication steps include the application of a green dam glass after the firing of the dielectric and top conductor of the capacitor to p...
03/27/1984
4430255Non-ohmic device using TiO2
An electrical device having a nonlinear current-voltage characteristic is described which uses TiO2, a Group IIA element such as barium, calcium and strontium in an amount greater than 0.0 and generally less than approximately 1.0 mole percent,...
02/07/1984
4408254Thin film capacitors
A capacitor is formed by placing between two electodes a thin film of amorphous titanate which has been ion implanted with noble gas ions....
10/04/1983
4400759Dielectric ceramic composition having a base of barium titanate, lithium oxide and cupric fluoride, a capacitor in which a composition of this type is employed, and a method of production of said composition
A dielectric ceramic composition which has excellent electrical properties and can be sintered at a temperature within the range of 750° C. to 1000° C. contains 90 to 98% by weight of barium titanate, 0.5 to 2.5% by weight of lithium oxide and 1.5 to 8%...
08/23/1983
4400760Dielectric ceramic composition having a base of barium titanate, lithium oxide and cadmium fluoride, a capacitor in which a composition of this type is employed, and a method of production of said composition
A dielectric ceramic composition which has excellent electrical properties and can be sintered at a temperature within the range of 750° C. to 1000° C. contains 85 to 97% by weight of barium titanate, 0.5 to 2.5% by weight of lithium oxide and 2.5 to 12...
08/23/1983
4396721Glass ceramic materials having controllable temperature coefficients of dielectric constant
Glass ceramic materials having controllable temperature coefficients of dielectric constant or capacitance (TCC) are provided. The ceramic component of the composition possesses paraelectric properties at least over the temperature range of -55° C. to 12...
08/02/1983
4392180Screen-printable dielectric composition
Thick film dielectric compositions suitable for screen-printing comprising a substituted perovskite, an inorganic dopant, and a low temperature-devitrifiable frit or glass. Upon firing the dielectric composition is highly hermetic....
07/05/1983
4388416Ceramic dielectric compositions for temperature compensating capacitors
Ceramic dielectric compositions for temperature compensating capacitors, exhibiting a high dielectric constant, a relatively small temperature coefficient of dielectric constant and a very excellent linearity of the temperature coefficient, comprising 1.2...
06/14/1983
4379854Low temperature firing (1800°-2100° F.) of barium titanate with flux (lead titanate-bismuth titanate-zinc oxide and boron oxide)
A mixture of powders of barium titanate, a Curie point shifter and a lead titanate-bismuth titanate metal oxide flux which may be fired in a single step at 1800° F. to 2100° F. to produce a dense ceramic body with high dielectric constant. The ceramic i...
04/12/1983
4377840Screen-printable dielectric composition
Thick film dielectric compositions suitable for screen-printing comprising a perovskite, a bismuth-substituted pyrochlore, and a low temperature melting-devitrifiable glass. Upon firing the dielectric composition is highly hermetic....
03/22/1983
4353047(1-x)BaO.xTiO2 System dielectric material for use in a microwave device
The present invention provides a dielectric material adapted for microwave integrated circuits (MIC) and an electric circuit making use of said dielectric material. More particularly, an oxide dielectric material principally consisting of (1-x)BaO.xTiO
10/05/1982
4347167Fine-grain semiconducting ceramic compositions
A semiconducting internal boundary layer ceramic composition having a fine grain structure suitable for use in thin-layer multilayer capacitors is made in one step by firing a mixture comprising a major amount of finely divided strontium titanate, a minor...
08/31/1982
4339544Ceramic dielectric composition
A ceramic dielectric composition of a ternary system Pb(Mg1/3 Nb2/3)O3 -Pb(Zn1/3 Nb2/3)O3 -PbTiO3, comprising 69.05-69.60% by weight of Pb3 O4, 2.41-4.00% by ...
07/13/1982
4325763Method of manufacturing ceramic capacitors
A ceramic capacitor is prepared by corting an electrode paste on the opposite surfaces of a green ceramic body. The electrode paste contains an inorganic binder having the same composition as the green ceramic body. Then the green ceramic body is sintered...
04/20/1982
4324750Method for making high K PLZT ceramic capacitor
A powder blend consisting essentially of precursors of a single antiferroelectric compound of lead-barium-lanthanum-zirconate titanate doped with silver, includes at least 0.7 mole percent bismuth permitting a near-full reaction to be achieved at calcinin...
04/13/1982
4308571Low temperature-sinterable dielectric composition and thick film capacitor using the same
A low temperature-sinterable dielectric composition is provided, whose sintered composition when prepared by firing a uniform mixture consisting of lead ferrotungstate, lead titanate and manganese dioxide at a temperature of not higher than 1,000° C. has...
12/29/1981
4283752Ternary niobate dielectric compositions
A dielectric material which meets the temperature requirements for X7R grade capacitors consists of a fired ternary niobate composition. A dielectric constant of at least 2000 and a limited change in dielectric constant with temperature is present in comp...
08/11/1981
4226735Dielectric ceramic composition and process for its production containing MgTiO3 and Pb3 O4 having a quantitative relationship
A dielectric ceramic composition consists essentially of strontium titanate, magnesium titanate, bismuth oxide, titanium oxide, and lead oxide, these components being present in the following compositional proportion when expressed by the formulas, SrTiO
10/07/1980
4149173Capacitor dielectric with internal barrier layers and a method for its production
A capacitor dielectric is disclosed with inner blocking layers in which two crystalline main phases are present in about equal portions in order to achieve an improvement in the loss factor of the insulation resistance, the voltage dependency of the diele...
04/10/1979
4131903Capacitor dielectric with inner blocking layers and method for producing the same
A capacitor dielectric with inner blocking layers is disclosed wherein the portion of copper located in intermediate layers between the crystallites is enriched toward the crystallite surfaces. The dielectric is produced by a heating speed of 200 to 800°...
12/26/1978
4131479Transparent ceramics
A transparent, complex oxide ceramic having the formula: wherein x is 0.01-0.50, Me' is at least one metal selected from the group of Ca, Ba, and Pb, and Me" is Nb and/or Ta. The present ceramics can be used in the fabrication of gas discharge tubes and for in...
12/26/1978
4130694Amorphous metal oxide material between electrodes of a cell
Amorphous niobates and tantalates of the alkali metals lithium, potassium, and sodium which may be off-stoichiometric with regard to the related octahedrally coordinated crystalline compositions manifest high values of dielectric constant and ionic conduc...
12/19/1978
4048546Dielectric powder compositions
Finely divided dielectric powder compositions having the formula (Srx Pb1-x TiO3)a (PbMg0.5 W0.5 O3)b wherein x is 0-0.10, a is 0.35-0.5, b is 0.5-0.65, and a plus b equals one,...
09/13/1977
3997457Ceramic dielectric composition
A ceramic dielectric compositon is provided which consists essentially of a sintered metal oxide mixture expressed by the formula: where Me is at least one divalent metal selected from lead and strontium, and x, y, z, u and v are numbers falling within the fol...
12/14/1976
3969252Dielectric ceramic compositions of BaTiO3 -BaZrO3 -CaTiO3 system
A dielectric material is provided consisting essentially of a composition based on the general formula: Wherein x=y=z = 1.0 and in which x, y and z have the following ranges: 0.4 ࣘ x ࣘ 0.89, 0.1 ࣘ y ࣘ 0.3 and 0.01 ࣘ z ࣘ 0.3, respectively, said...
07/13/1976
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