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615 results about "Valve metal" patented technology
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Modified oxygen reduced valve metal oxides
InactiveUS6639787B2Maintain good propertiesWear minimizationOxide/hydroxide preparationLiquid electrolytic capacitorsFluidized bedPhysical chemistry
Owner:GLOBAL ADVANCED METALS USA
Implantable medical device having flat electrolytic capacitor fabricated with laser welded anode sheets
ActiveUS6922330B2Robust electrical and mechanical connectionMinimize damageLiquid electrolytic capacitorsCapacitor terminalsElectrolysisOptoelectronics
Implantable medical devices (IMDs) and components, including flat electrolytic capacitors and methods of making and using same, particularly an improved electrolytic capacitor fabricated of an electrode stack assembly comprising a plurality of capacitor layers stacked in registration upon one another. Each capacitor layer comprises a valve metal cathode layer having a cathode tab, a valve metal anode layer having an anode tab, and a separator layer located between the cathode layers. The anode layer is assembled from a plurality of valve metal anode sheets that are etched and anodized, stacked side-by-side, and electrically and mechanically joined together by laser weld beads. A valve metal anode tab having a thickness equal to one or more anode sheet is inserted into a tab notch in one or more stacked anode sheet and joined to the anode sheet stack by laser welding the tab and sheet edges together.
Owner:MEDTRONIC INC
Conductive composition and conductive cross-linked product, capacitor and production method thereof, and antistatic coating material, antistatic coating, antistatic film, optical filter, and optical information recording medium
ActiveUS20060047030A1Improve conductivityLower impedanceHybrid capacitor electrolytesHybrid capacitor electrodesCross-linkElectron donor
A conductive composition comprises a π conjugated conductive polymer, a dopant, and a nitrogen-containing aromatic cyclic compound. A capacitor comprises an anode composed of a porous material of valve metal, a dielectric layer formed by oxidizing the surface of the anode, and a cathode provided on the dielectric layer and having a solid electrolyte layer containing a π conjugated conductive polymer, which comprises an electron donor compound containing an electron donor element provided between the dielectric layer and the cathode. Another capacitor is based on the above-described capacitor, wherein the solid electrolyte layer further comprises a dopant and a nitrogen-containing aromatic cyclic compound. An antistatic coating material comprises a π conjugated conductive polymer, a solubilizing polymer containing an anion group and / or an electron attractive group, a nitrogen-containing aromatic cyclic compound, and a solvent. An antistatic coating is formed by applying the antistatic coating material.
Owner:SHIN-ETSU POLYMER CO LTD
Conductive composition and production method thereof, antistatic coating material, antistatic coating, antistatic film, optical filter, and optical information recording medium, and capacitors and production method thereof
ActiveUS20060076541A1Improve conductivityImprove heat stabilityHybrid capacitor separatorsHybrid capacitor electrolytesConductive polymerSolvent
A conductive composition comprises a π conjugated conductive polymer, a polyanion, and a hydroxy group-containing aromatic compound containing two or more hydroxy groups. An antistatic coating material comprises the conductive composition and a solvent. An antistatic coating is produced by applying the antistatic coating material. A capacitor comprises an anode composed of a porous valve metal body; a dielectric layer formed by oxidizing a surface of the anode; and a cathode formed on the dielectric layer, wherein the cathode has a solid electrolyte layer comprising the conductive composition.
Owner:SHIN-ETSU POLYMER CO LTD
Electrode metal material, capacitor and battery formed of the material and method of producing the material and the capacitor and battery
The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material. With this configuration, even if the surface of the valve metal material is oxidized, the internal resistance of the electrode is not decreased, the internal resistance of the capacitor is decreased, and the capacitance of the capacitor is increased.
Owner:PANASONIC CORP
Powder metallurgy sputtering targets and methods of producing same
A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
Owner:GLOBAL ADVANCED METALS USA
Monolithic sputtering target assembly
A monolithic sputtering target assembly having a one piece assembly made from the same material is disclosed. Also disclosed are other sputtering target assemblies which have a backing plate and a sputtering target blank wherein the backing plate is made from or contains a metal, such as a valve metal, cobalt, titanium, or alloys thereof. Methods of recycling target assemblies are further disclosed as well as unique methods of providing target assemblies to fabricators.
Owner:CABOT CORP
Conductive polymer solution, conductive coating, condenser and process for manufacturing condenser
ActiveUS20090021894A1Improve conductivityLow ESRNon-metal conductorsHybrid capacitor separatorsHeat resistanceConductive coating
The object of the present invention is to provide a condenser that exhibits excellent conductivity of the solid electrolyte layer, and has a low ESR, a high degree of heat resistance, and a high withstand voltage. A condenser of the present invention includes an anode composed of a valve metal, a dielectric layer formed by oxidation of the surface of the anode, and a solid electrolyte layer formed on the surface of the dielectric layer, wherein the solid electrolyte layer contains a π-conjugated conductive polymer, a polyanion, and an amide compound.
Owner:SHIN-ETSU POLYMER CO LTD
Method for fabrication of low-polarization implantable stimulation electrode
InactiveUS20060167536A1Avoid layeringPrevent oxidationInternal electrodesExternal electrodesIridiumImplantable Stimulation Electrodes
A method for fabricating an implantable medical electrode includes roughening the electrode substrate, applying an adhesion layer, and depositing a valve metal oxide coating over the adhesion layer under conditions optimized to minimize electrode impedance and post-pulse polarization. The electrode substrate may be a variety of electrode metals or alloys including titanium, platinum, platinum-iridium, or niobium. The adhesion layer may be formed of titanium or zirconium. The valve metal oxide coating is a ruthenium oxide coating sputtered onto the adhesion layer under controlled target power, sputtering pressure, and sputter gas ratio setting optimized to minimize electrode impedance and post-pulse polarization.
Owner:MEDTRONIC INC
Electrode metal material, capacitor and battery formed of the material and method of producing the material and the capacitor and battery
InactiveUS20020080558A1Hybrid capacitor electrodesLiquid electrolytic capacitorsCapacitanceActivated carbon
The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material. With this configuration, even if the surface of the valve metal material is oxidized, the internal resistance of the electrode is not decreased, the internal resistance of the capacitor is decreased, and the capacitance of the capacitor is increased.
Owner:PANASONIC CORP
Advanced valve metal anodes with complex interior and surface features and methods for processing same
InactiveUS7342774B2Small shape flexibilitySmall sizeLiquid electrolytic capacitorsHeart defibrillatorsHigh voltage capacitorsHigh energy
The present invention generally relates to improved capacitors; in particular, the present invention provides advanced valve metal (AVM) anodes and methods for fabricating AVM anodes having complex surface and interior features for use in high energy density capacitors. Such anodes find use in high voltage capacitors incorporated into implantable medical devices (IMDs), among other uses. The AVM anodes may be pressed into virtually any arbitrary shape and may have a gradually changing (or substantially constant) density profile throughout the AVM anode. Such AVM anodes may also be perforated or shaped to receive one or more cathode members. The AVM anodes enhance packaging efficiency for compact high energy density capacitors.
Owner:MEDTRONIC INC
Conductive composition and production method thereof, antistatic coating material, antistatic coating, antistatic film, optical filter, and optical information recording medium, and capacitors and production method thereof
ActiveUS20060062958A1Improve conductivityImprove heat stabilityHybrid capacitor electrolytesHybrid capacitor electrodesVinyl etherConductive polymer
A conductive composition comprises a π conjugated conductive polymer, a dopant composed of polyanion, and at least one crosslinking site forming compound selected from (a) compounds having a glycidyl group and (b) compounds having a hydroxyl group and one selected from the group consisting of allyl, vinyl ether, methacryl, acryl methacrylamide, and acrylamide groups. An antistatic coating material comprises a π conjugated conductive polymer, polyanion, at least one crosslinking site forming compound selected form the above (a) and (b), and a solvent. An antistatic coating is formed by applying the above-mentioned antistatic coating material. In a capacitor comprising an anode composed of a valve metal porous body; a dielectric layer formed by oxidizing the suds of the anode; and a cathode formed on the dielectric lays, the cathode has a solid electrolyte layer formed by crosslinking complexes of a π conjugated conductive polymer and a dopant composed of a polyanion.
Owner:SHIN-ETSU POLYMER CO LTD
Passivation of tantalum and other metal powders using oxygen
A method to passivate a metal or metal oxide or metal suboxide powder, especially a valve metal powder such as tantalum or niobium and the passivated powders formed therefrom are described. The method includes passivating a starting powder with a gas having at least 25 wt. % oxygen present. Passivation is preferably achieved without performing any evacuation steps. Capacitors made from the passivated powders are also described.
Owner:GLOBAL ADVANCED METALS USA
Conductive composition precursor, conductive composition, solid electrolytic capacitor, and their manufacturing method
InactiveUS6853540B2Improve pressure resistanceAvoid conductionHybrid capacitor electrolytesClosuresConductive polymerOptoelectronics
A solid electrolytic capacitor including a valve metal positive electrode, an anodized layer formed on a surface of the positive electrode, a conductive polymer-containing negative electrode conductive layer, and a coupling agent layer and a surface active agent layer placed between the anodized layer and the negative electrode conductive layer.
Owner:PANASONIC CORP
Sintered valve metal powders for implantable capacitors
ActiveUS6965510B1Short timeIncrease temperatureLiquid electrolytic capacitorsCapacitor electrodesNiobiumTitanium
A sintering method for valve metal powders, such as tantalum, niobium, aluminum, titanium, and their alloys, is described. The valve metal powders are pressed into a pellet and sintered at a relatively high temperature, but for a relatively short time. The anodized valve metal structure is then useful as an anode in an electrolytic capacitor.
Owner:WILSON GREATBATCH LTD
Method for producing high surface area foil electrodes
InactiveUS20010051442A1Increase capacitanceHigh surfaceFixed capacitor dielectricSynthetic resin layered productsElectrolysisMetal foil
Owner:ACKTAR
Method for producing high surface area foil electrodes
InactiveUS6287673B1Increase capacitanceHigh surfaceVacuum evaporation coatingSputtering coatingElectrolysisMetal foil
A method for increasing the surface area of foil electrodes of electrolytic capacitors. A valve metal is deposited by evaporation on a valve metal foil in a low pressure inert atmosphere including oxygen at a pressure one to two orders of magnitude lower than the pressure of the inert gas. The resulting surface is fractal-like. The foil thus treated is suitable as such for use as a cathode. Prior to anodization to produce an anode, a discontinuous layer of a valve metal oxide is deposited on the foil, to preserve the high surface area of the fractal-like surface and otherwise promote the formation of a dielectric coating whose interface with the metal foil has a high surface area.
Owner:ACKTAR
Solid electrolyte capacitor with ultra-low equivalent series resistance and manufacturing method thereof
ActiveCN101350253AImprove volumetric efficiencyTightly boundSolid electrolytic capacitorsCapacitor terminalsElectrolysisNiobium
The invention relates to a solid electrolytic capacitor and the method for preparing the solid electrolytic capacitor, wherein the solid electrolytic capacitor takes solid conducting high molecular polymer as electrolyte and takes valve metals, such as tantalum, niobium, titanium, aluminum and the like as an anode. The solid electrolytic capacitor is characterized by sufficiently explaining the techniques for the design of the anode, the function assignment, the chemical oxidative in-situ polymerization, the dip-coating graphite silver paste, the making of bottom extraction electrode and the like, with the technical proposal of the invention, a high polymer film, a graphite layer and a silver layer can be compactly combined, the manufactured electrolytic capacitor can be provided with very low equivalent series resistance (ESR), very high volumetric efficiency and good impedance frequency characteristic, the ESR value can be stable in the range of 10KHz-1000KHz, and the requirements of the frequency of a modern electronic equipment can be satisfied.
Owner:CHINA ZHENHUA GRP XINYUN ELECTRONICS COMP ANDDEV CO LTD
Powder metallurgy sputtering targets and methods of producing same
A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
Owner:GLOBAL ADVANCED METALS USA
High capacitance electrode and methods of producing same
The present invention provides improved cathodes and methods for producing such cathodes for ultimate use in conjunction with valve metal capacitors. A family of titanium carbide cathodes according to the present invention can be produced so that they inhabit a pre-existing metallic surface such as an inner surface of a titanium casing adjacent but insulated from direct electrical communication from an anode. Foil-type valve metal anodes as well as porous valve metal anodes formed from metallic powders may be used in conjunction with the titanium cathodes of the present invention.
Owner:MEDTRONIC INC
Electrolytic capacitor, circuit board containing electrolytic capacitor, and method for producing the same
InactiveUS6504705B2Hybrid capacitor electrolytesSolid electrolytic capacitorsRough surfaceElectrolysis
In an electrolytic capacitor of the present invention, a dielectric layer is provided on a surface of a valve metal element for an anode having a capacitor forming part and an electrode lead part, and further, a solid electrolyte layer and a charge collecting layer for a cathode are provided in this order thereon. The capacitor forming part and the electrode lead part of the valve metal element for an anode have rough surface layers on their surfaces, and are compressed in the thickness direction of the rough surface layers. Further, a region other than the electrode lead part and the charge collecting element for cathode is molded with a molding material. Exposed portions of the electrode lead part and the charge collecting element for cathode function as electrode terminals, respectively.
Owner:PANASONIC CORP
Nitrided valve metals and processes for making the same
InactiveUS6679934B2Evenly distributedImprove Capacitive PerformanceTransportation and packagingMetal-working apparatusTantalum nitrideNiobium
Nitrided valve metals are described, such as nitrided tantalum and nitrided niobium. The nitrided valve metals preferably have improved flow properties, higher Scott Densities, and / or improved pore size distribution which leads to improved physical properties of the valve metal and improved electrical properties once the valve metal is formed into a capacitor anode. Processes for preparing a nitrided valve metal are further described and involve nitriding the valve metal at a sufficient temperature and pressure during a heat treatment that is prior to the deoxidation step. Capacitor anodes and other products incorporating the valve metals of the present invention are further described.
Owner:GLOBAL ADVANCED METALS USA
Non-aqueous electrolyte cell with a solvent including a S-O bond
InactiveUS6670078B1Improve featuresElectrode carriers/collectorsOrganic electrolyte cellsOrganic solventAlloy
A nonaqueous electrolytic solution cell having a negative electrode containing lithium as an active material, a positive electrode, a nonaqueous electrolytic solution consisting of solute and organic solvent, a separator, and an outer can, wherein the organic solvent contains a compound having an S-O bond, and a current collector for the positive electrode and an electrolytic solution-contacting portion on the positive electrode side of the outer can are made of valve metal or alloy thereof is disclosed. The nonaqueous electrolytic solution cell of the present invention is excellent in low-temperature characteristics and long-term stability, and also in cycle characteristics for use as a secondary battery.
Owner:MITSUBISHI CHEM CORP
Electrode metal material, capacitor and battery formed of the material and method of producing the material and the capacitor and battery
The present invention relates to an electrode metal material for batteries, capacitors, etc, used in contact with non-aqueous electrolyte, and particularly to a capacitor formed of the electrode metal material, and provides a valve metal material capable of decreasing the internal resistance of the capacitor. The electrode metal material comprises a valve metal material and numerous carbon particles included in the surface of the valve metal material. The carbon particles are further fixed in the surface of the valve metal material so as to expose to the surface. The electrode metal material is coated with an activated carbon layer and used as a double-layer electrode for an electric double-layer capacitor. The carbon particles included in the surface ensure conduction between the activated carbon layer and the valve metal material. With this configuration, even if the surface of the valve metal material is oxidized, the internal resistance of the electrode is not decreased, the internal resistance of the capacitor is decreased, and the capacitance of the capacitor is increased.
Owner:NONAKA SEIJI +4
Capacitor, circuit board with built-in capacitor and method of manufacturing the same
InactiveUS6980416B2Reduce thicknessImprove reliabilityPrinted circuit aspectsCapacitor electrolytes/absorbentsOptoelectronicsDielectric layer
In a capacitor 10, a first electrode 21, a valve metal layer 22, a dielectric layer 23, a chemical polymerization film 24 (a first solid electrolytic layer), a conductive organic material layer 61, an electrolytic polymerization film 25 (a second solid electrolytic layer) and a second electrode 31 are provided on a base material 11, and the conductive organic material layer 61 is obtained by applying and caking a paste-like conductive organic material 60 onto the chemical polymerization film 24.
Owner:SHINKO ELECTRIC IND CO LTD
Capacitor and method for producing the same, and circuit board with a built-in capacitor and method for producing the same
InactiveUS20070022590A1Improve connection reliabilityReduce connection resistancePrinted circuit assemblingLiquid electrolytic capacitorsDielectricElectrically conductive adhesive
Owner:PANASONIC CORP
Solid electrolytic capacitor
ActiveUS20090128997A1Reduce capacitanceAdhesivenessAnodisationSolid electrolytic capacitorsElectrolysisConductive polymer
An aspect of the invention provides a solid electrolytic capacitor that comprises: an anode formed of a valve metal or an alloy mainly made of a valve metal; a dielectric layer formed on a surface of the anode; a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant; a second conducting polymer layer formed on the first conducting polymer layer; and a cathode layer formed on the second conducting polymer layer.
Owner:SANYO ELECTRIC CO LTD
Method of forming sintered valve metal material
Methods of forming sintered valve metal are described. The methods involve sintering a valve metal such as tantalum or niobium in the presence of an iodine source. The method optionally includes deoxidizing the metal using the same equipment used in sintering and / or as a combined step. The sintered valve metal formed by the methods of the present invention preferably has relatively large pores and other properties desirable for making capacitors that have high capacitance and low leakage.
Owner:GLOBAL ADVANCED METALS USA
Capacitor, manufacturing method of the same, and electronic substrate including the same
InactiveUS20080068780A1Solid electrolytic capacitorsFixed capacitor electrodesMetallic materialsProtection layer
A capacitor comprises a substrate, a conductive layer containing conductive particles, a valve metal sheet having a dielectric part formed throughout an entire surface of the conductive layer, a protection layer covering the valve metal sheet. The capacitor further includes a first electrode terminal electrically connected to the conductive layer and partially exposed from a surface of the protection layer, and a second electrode terminal electrically connected to a surface of the valve metal sheet opposite to a surface of the valve metal sheet on which the dielectric part is provided, and the second electrode terminal partially exposed from the surface of the protection layer. The dielectric part is made of an oxide of a metallic material of the valve metal sheet, the dielectric part is formed with a corrugated surface on the conductive layer, and the conductive particles are in contact with the corrugated surface.
Owner:FUJITSU LTD
Methods and apparatus for producing carbon cathodes
ActiveUS20050098242A1Efficient mass productionImprove consistencyElectrode thermal treatmentDouble layer capacitorsTitaniumMetal powder
The present invention provides improved cathodes and industrialized methods for producing such cathodes using an industrial dosing valve-based electrode coating fluid emitting technique. The family of cathodes according to the present invention can be produced so that they inhabit a pre-existing metallic surface such as an inner surface of a titanium casing adjacent but insulated from direct electrical communication from an anode. Foil-type valve metal anodes as well as porous valve metal anodes formed from metallic powders may be used in conjunction with the cathodes of the present invention.
Owner:MEDTRONIC INC +1
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