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Matches 151 - 200 out of 2,127

Document Document Title
WO/2002/003408A2
Flat electrolytic capacitors particularly for use in implantable medical devices having stacked cathode and anode layers particular electrical connections of the capacitor anode and cathode layers with a capacitor connector assembly. Ano...  
WO/2001/088933A1
A new type of high-Q variable capacitor includes a substrate (12), a first electrically conductive layer (14) fixed to the substrate, a dielectric layer (24) fixed to a portion of the electrically conductive layer, and a second electrica...  
WO/2001/084572A2
This invention provides tunable devices incorporating the dielectric CaCu¿3?Ti¿4?O¿12?. CaCu¿3?Ti¿4?O¿12? is especially useful in tunable devices such as phase shifters, matching networks, oscillators, filters, resonators, and ante...  
WO/2001/084698A1
Frequency regulating apparatus (30) comprising a high power, voltage variable dielectric varactor (16) or capacitor (31) (or ferroelectric voltage variable dielectric capacitor (31)) for use as a control element in the regulation circuit...  
WO/2001/080257A1
A method of making an electret includes condensing vapor from the atmosphere of a controlled environment onto a dielectric article and then drying the article to remove the condensate.  
WO/2001/078230A1
The invention describes a tunable filter arrangement with at least two resonators which are coupled to one another and of which at least one is connected to a capacitor with tunable capacitance. The electrical properties of the resonator...  
WO2000000267A3
A porous polymeric sheet (18) is provided having an electrostatic charge and comprising a zero-three composite of a polymeric matrix and a ferroelectric material dispersed therein. The polymeric component comprises a non-polar thermoplas...  
WO/2001/068554A1
The invention relates to a ceramic mass (1) consisting of one ceramic material (2) and at least one other kind of ceramic material (3) different therefrom. Glass material (4) is arranged between the ceramic materials. The glass material ...  
WO/2001/052401A1
The source to drain capacitance of a FET device is used by connecting the source and drain together electrically so as to form a two terminal capacitive device which may be switched into and out of a parallel resonant circuit. Thus, sets...  
WO2000062367A8
The present invention relates to an electrically tunable device (10), particularly for microwaves. It comprises a carrier substrate (1), conducting means (3A, 3B) and at least one tunable ferroelectric layer (2). Between the conducting m...  
WO/2000/072382A1
A ferroelectric memory cell (200) for storing information and a method for fabricating the same. The information is stored in the remnant polarization of a ferroelectric dielectric layer by setting the direction of the remnant polarizati...  
WO/2000/062367A1
The present invention relates to an electrically tunable device (10), particularly for microwaves. It comprises a carrier substrate (1), conducting means (3A, 3B) and at least one tunable ferroelectric layer (2). Between the conducting m...  
WO/2000/035042A1
This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point and the output connection point and inc...  
WO/2000/028613A1
A voltage tunable dielectric varactor includes a tunable ferroelectric layer and first and second non-tunable dielectric layers. First and second electrodes positioned adjacent to the tunable ferroelectric layer form a tunable capacitor....  
WO/2000/024079A1
A voltage tunable dielectric varactor includes a substrate having a low dielectric constant and having generally planar surface, a tunable ferroelectric layer positioned on the generally planar surface of the substrate, and first and sec...  
WO/2000/012427A1
The invention relates to a micromechanical component placed on the face of a substrate. A counter-electrode of a cell capacitor is placed under a cavity (H), whereby said counter-electrode can be composed of a first part of a lower condu...  
WO/2000/001737A1
An electret that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article. The electret may be a nonwoven fibrous web that comprises electrically charged microfibers where t...  
WO/2000/000267A2
A porous polymeric sheet (18) is provided having an electrostatic charge and comprising a zero-three composite of a polymeric matrix and a ferroelectric material dispersed therein. The polymeric component comprises a non-polar thermoplas...  
WO/1999/066985A1
An implantable medical device such as a defibrillator is described. The device includes an hermetically sealed housing containing a flat electrolytic capacitor and an energy source such as a battery. The battery is connected to the capac...  
WO/1999/059172A1
Thin electret layer with a layer thickness of less than 200 $g(m)m made of polymers containing fluorine. The mean chain length of the polymer chain contained in the layer produced by evaporation, sputtering, ablation, blowing or dispersi...  
WO1999033075A3
The invention relates to a digitally adjustable electronic capacitor which can be digitally controlled, tuned in a large capacity range across several magnitudes independently of the voltage available, integrated into circuits and produc...  
WO/1999/033075A2
The invention relates to a digitally adjustable electronic capacitor which can be digitally controlled, tuned in a large capacity range across several magnitudes independently of the voltage available, integrated into circuits and produc...  
WO/1999/026261A1
The invention is embodied in an electrical device which includes at least a layer of a ferroelectric polyvinylidine fluoride polymer that has been processed to exhibit an electrostrictive strain of 4 % or more when an electric field grad...  
WO/1999/016532A1
Novel electret articles containing a polymer and a performance-enhancing additive can be identified by their thermally stimulated conductivity characteristics or their filtration properties. Electret articles such as nonwoven filter webs...  
WO1998056836A3  
WO/1998/056836A2
The invention relates to electrets produced on the basis of cycloolefin copolymers (COC) and characterized by long-term stability of the charges applied thereto, even at high temperatures and high relative air humidity. Cycloolefin copol...  
WO/1998/024130A1
There are provided an actuator part main body (26) which has an antiferroelectric film (22) and a pair of electrodes (24a and 24b) formed on one major face (surface) of the antiferroelectric film (33), a vibratory part (18) which support...  
WO/1998/013840A1
According to the suggested method for manufacturing a low self-inductance capacitor integrated in a casing, the wiring between the capacitor (1) junction elements and the passages are made with flexible leads (2) preferably of substantia...  
WO/1997/040506A1
A variable capacitor includes a first electrode (2), a second electrode (3) and, located between the first and second electrodes, an array of gas discharge tubes (7). The capacitor includes means for producing an electrical discharge in ...  
WO/1997/038429A1
A capacitor having a floating plate-shaped electrode (16), at least two patterned plate electrodes (20, 22) overlying the floating plate-shaped electrode (16), and a dielectric layer therebetween (24). The resulting structure exhibits hi...  
WO1995005501A3  
WO/1995/005501A2
A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive microfibers capable of having a high quantity o...  
WO/1995/001079A1
A folded dielectric film element functioning as an energy converter, consisting of a dielectric film (1, 2) bent into folds (L) and provided with electrodes (K). The electrodes (K) are so arranged in the folds (L), different electrodes b...  
WO/1994/018242A1
A poromeric material for maintaining an electrostatic charge is provided, the material including a matrix (24, 124) of fibers (22, 122), a polymeric binder (26, 126) for binding the matrix, and electrets (28) present substantially unifor...  
WO/1994/013471A1
A method and resulting structure for growing a crystalline perovskite film (16) on a silicon dioxide layer (12) by means of an intermediate template layer (14) of a c-axis oriented layered perovskite, such as bismuth titanate. The perovs...  
WO/1994/013028A1
The disclosure relates to ferroelectric and superconducting thin films used in combination to produce low-loss frequency tunable microwave and mm-wave devices. Various metal oxide superconducting and ferroelectric films can be arranged i...  
WO/1994/003908A1
A method of forming crystalline metal oxide thin films on silicon and the resultant structure. A crystalline buffer layer (10) of yttria-stabilized zirconia is deposited on a silicon substate (12). A thin template layer (14) of an anisot...  
WO/1994/002954A1
A double layer capacitor comprising a conductive solid (10, 11) in contact with a gas (12), preferably an inert gas, to form a double layer capacitor of unusually high specific energy density (energy to weight ratio). The device may be s...  
WO/1993/018531A1
A ferroelectric memory and its method of making in which a highly c-axis oriented layer (56) of ferroelectric lead zirconate titanate (PZT) is epitaxially deposited at between 640° and 710 °C upon a crystalline film (54) of yttrium bar...  
WO/1993/016481A1
A capacitance humidity sensor (10) according to the invention has a film core (11) which is in contact with a pair of polymeric conductive layers (12, 13) bonded to opposite faces of the core (11). The core (11) is made of a polymeric ma...  
WO/1993/014510A1
An antibacterial electret material which consists of a synthesized organic polymer having a volume resistivity of not less than 1013 OMEGA.cm and containing 0.01-2 % by weight of one kind of electret stabilizer selected from the group co...  
WO/1993/011548A1
Multilayer capacitors comprise layers of a dielectric material interleaved with metallic electrodes. To improve the energy storage of such capacitors when operating in field strengths greater than 20 kV/mm, the dielectric material is a m...  
WO/1993/008578A1
A voltage variable capacitor (10) has as the base substrate a silicon wafer with a layer of high resistivity semiconductor material on top of the substrate. An insulating layer (16) of a metal oxide having a dielectric constant greater t...  
WO/1993/006610A1
A monolithic capacitor (101) whose capacitance can be varied by removing part of an electrode (106). The capacitor may comprise an end termination (105), coupled to a plurality of internal electrodes (103), which are disposed in a dielec...  
WO/1993/004495A1
In the feature proposed, a charge-storage film (2, 3, 4) of dielectric material is located on the surface of a substrate (1), the film being loaded with a given amount of charge. The side of the charge-storage film (2, 3, 4) remote from ...  
WO/1991/018406A1
A monolithic multilayer capacitor of known capacitance has a body with six external walls and a plurality of spaced electrodes (30 and 32 to 36) embedded in the body and spaced from a first one of the walls. Two spaced end walls have ele...  
WO/1991/013922A1
In one embodiment this invention provides vinylidene copolymer with alternating monomeric units as illustrated by structure (I). An invention vinylidene copolymer in the form of an electret film exhibits a high level of longitudinal piez...  
WO/1991/005246A1
A capacitance humidity sensor according to the invention has a dielectric film core (11) which is in contact with a pair of polymeric conductive layers (12, 13) bonded to opposite faces to the core (11). The dielectric core (11) is made ...  
WO/1991/004566A1
At least part of each of protective layers (1, 4a, 4b, 5a, 5b, 6a, 6b, 6c, 7, 8a, 8b) disposed outside the capacitance generating portion (2) of a film capacitor is of a substantially-unoriented polyphenylene sulfide film (10). The unori...  
WO/1990/005987A1
A rain sensor (10) for a windshield (12) having two sets of electroconductive coatings (22, 24 and 34, 36) on opposing major surfaces of the outer glass ply of a windshield. The first set of coatings (22 and 24) on the outer major surfac...  

Matches 151 - 200 out of 2,127