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Matches 201 - 250 out of 2,169

Document Document Title
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...  
WO/1989/011724A1
An electret material consisting of a molded article which has, as an inner component, a polar polymer with a volume resistivity of greater than 1012 ohms.cm on lateral cross section and a non-polar polymer with a resistivity of greater t...  
WO/1989/011156A1
This invention relates to an electret material having thermal stability and capable of having high trapped charge quantity and stably existing for a long period of time and a process for preparing said electret material. The electret mat...  
WO/1989/004061A1
Novel microelectrochemical devices are provided which consist of closely spaced microelectrodes (24) coated with metal ion based inorganic redox active material such as oxides (22) or mixed oxides of any of the following transition metal...  
WO/1988/009043A1
A small multilayer capacitor, such as an MLC capacitor (10) has in one of its end terminations (16 and 18) a passivation layer (17) surrounded by nested sputter-coated metallization films (22, 24, 26 and 28) to provide a safeguarding fea...  
WO/1988/006064A1
A process for fabricating an electronic device on a non-conductive polymer substrate (10), particularly from the family of polyaniline, comprises applying a covalent doping agent (18), such as an R+ donor compound, where R is an organic ...  
WO/1987/004301A1
An electrically variable three terminal monomorphic piezoelectric capacitor is manufactured with thick or thin film hybrid microelectronic circuit technology. A first capacitor plate (12) and a ridge (16), which substantially surrounds a...  
WO/1987/003088A1
A corrosion proof differential pressure transducer includes a central disk (12) and two thin diaphragms (14, 16) mounted close to but spaced from the disk on both sides thereof, with the diaphragms being intercoupled to move together. Th...  
WO/1987/000347A1
Novel Langmuir-Blodgett (LB) films of ABAB structure in which the compounds A and B are different and contain complementary groups which result in non-centrosymmetry of the layer plane. Three types of structure are described (i) in which...  
WO/1986/006752A1
Methods for forming targets of ferroelectric, metal nitrate or similar material, methods for depositing such materials using ion beam techniques, and a method for forming a combined and integrated circuit/ferroelectric memory device wher...  
WO/1986/002486A1
A capacity sensing cell (10) is adapted for manufacture in a batch process, and uses a substrate or base (11) from a rigid insulating material such as glass and a diaphragm assembly (12, 14, 15) of a brittle semiconductor. The diaphragm ...  
WO/1986/002487A1
Sensor circuitry (60) for sensing changes in capacitance of separate sensor portions (19, 20) wherein in each of the sensor portions (19, 20) a separate plate (20, 22 or 25, 33) will deflect in response to changes in parameter, for examp...  
WO/1985/004513A1
In fabricating electrets a voltage is applied across an electrically polarizable body. Large-scale breakdown effects in the body are avoided by reducing the voltage across at least a portion of the body undergoing polarization in respons...  
WO/1985/003381A1
Hermetically sealed electrical feedthrough conductors (12, 14) and (16) are formed across the periphery or boundary (18) between a hermetically sealed region (26) on a semiconductor substrate and a second or external region (20, 22) and ...  
WO/1985/001385A1
Fibrous web electrets are given added properties (1) through inclusion of a particulate material, such as a flame-retardant agent, in less than all the layers of a plural-layer film from which fibers are fibrillated, and by use of a brom...  
WO/1984/004865A1
Electrodes, electrostatic transducers employing the electrodes, and methods of making the electrodes and the electrostatic transducers. Sparking from conventional electrodes, which occurs in the air gap, causes serious damage to thin fil...  
WO/1984/003193A1
A continuous method for manufacturing an electret filter medium from dielectric material having an open or porous structure, said method comprising the step of continuously feeding a web of dielectric material (122) with a substantially ...  
WO1984002424A3  
WO/1984/002424A1
An electret material is formed by the method which includes the step of passing a pair of electrical conductor elements (32) along one surface of a dielectric material (20) heated to a predetermined temperature. The conductor elements (3...  
WO1984002424A2
Un matériau à électrets est formé par le procédé consistant à faire passer une paire d'éléments électriquement conducteurs (32) le long d'une surface d'un matériau diélectrique (20) chauffé à une température prédétermin...  
WO/1983/003028A1
A small-sized and inexpensive current limiting element with low losses used, for example, as a ballast for limiting the current of a discharge lamp, by means of ferrodielectric body having rectangular hysteresis characteristics for an AC...  
WO/1983/001536A1
A silicon capacitive pressure transducer (34) comprising two wafers of silicon (14, 32) separated by borosilicate glass (18, 21), one of the wafers (14) having a borosilicate glass pedestal (26) thereon which is metallized (30) to provid...  
WO/1983/000404A1
A method of manufacturing a pyroelectric unit which includes the steps of imparting a temperature change to pyroelectrically coupling particles dispersed between a pair of opposed electrodes (13, 14) applied by an electric field before t...  
WO/1982/004346A1
A method of producing charged Teflon material having a stable internal positive charge. Partially penetrating positive ions, which may be produced, for example, by a corona discharge or ion beam, are applied to Teflon at an elevated temp...  
WO/1982/003149A1
A current-limiting device (4) is connected in series with a discharge lamp (3). The current-limiting device (4) is composed of a capacitor having, as a dielectric, ferroelectric polycrystal ceramics mainly containing barium titanate (BaT...  
WO/1982/001455A1
Process for preparing pieyoelectric film using a corona discharge device wherein a multi-layer of pellicles (13, 15), of which ate least one or more is a piezoelectric sensitive film (13) and at least one other of the multi-layer is a co...  
WO/1982/001456A1
Polymeric films exhibiting piezoelectric properties have such properties enhanced by being subjected to improved poling apparatus of the present invention comprising a textured corona discharge electrode roller oscillating over the polym...  
WO/1981/000786A1
Thick film capacitors with screened electrodes can not be laser trimmed without damage to the dielectric. To solve this problem a thick film capacitor, with a first electrode (12), at least one dielectric layer formed from paste (14, 16)...  
JP2015079860A
【課題】ディジタル的に容量制御可能な可変 容量装置を提供する。【解決手段】本可変容 量装置は、(A)直列に接続されたN個(N は2以上の整数)の可変容量素子と、(...  
JP2015073047A
【課題】複数の初期容量に容易に対応可能な 構造を有する可変容量デバイスを実現する。 【解決手段】可変容量デバイスは、第1の導 体層と、第1の導体層の上に形成された...  
JP5702125B2  
JPWO2013061985A1
本発明の高周波デバイスは、アンテナコイル 、可変容量素子およびRFICを備える。可 変容量素子は、キャパシタ電極(PT1,P T2)間に強誘電体膜(FS2)が挟み...  
JP5691085B2  
JP5694627B2  
JP5674842B2  
JPWO2013015385A1
高い電荷密度を発現し、かつ、高温高湿下で の電荷密度の安定性が良好なエレクトレット 、また該エレクトレットを具備する静電誘導 型変換素子を得る。樹脂層(A)と、樹...  
JPWO2012169098A1
本発明のRC発振回路は、増幅器と移相回路 を具備する。移相回路は、1つの抵抗および 1つのキャパシタから構成される少なくとも 3つのRC回路素子を具備する。RC回...  
JP5673796B2  
JP5666123B2  

Matches 201 - 250 out of 2,169