Assignee: H. C. Starck GmbH

Location: Goslar, DE
No. of patents: 25

Number	Title	Issue Date
8058135	Process for the production of electrolyte capacitors The invention relates to a process for the production of electrolyte capacitors having a low equivalent series resistance and low residual current, electrolyte capacitors produced by this process and the use of such electrolyte capacitors. ...	11/15/2011
8029762	Porous anode bodies comprising niobium suboxide and capacitors containing such anode bodies Porous anode bodies suitable for use in solid state capacitors, the porous anode bodies prepared by processes which include providing a niobium suboxide powder comprising niobium suboxide particles having a bulk nitrogen content of 500 to 20,000 ppm, and agglomerati...	10/04/2011
7972534	Retarding oxidants for preparing conductive polymers Process for preparing specific oxidants which in mixtures with precursors for preparing conductive polymers display a long processing time during the polymerization; oxidants obtainable by this process; mixtures comprising such specific (retarding) oxidants and the ...	07/05/2011
7951901	Process for the production of polyethylene dioxythiophenes The production of electrically conductive polythiophenes by reaction of 2,5-dihalogen-3,4-ethylene dioxythiophenes with 3,4-ethylene dioxythiophenes in a solvent or liquid phase is provided. These polythiophenes can be used as a plastic or lacquer additive to provid...	05/31/2011
7898794	Tantalum powder for the production of solid electrolyte capacitors A tantalum powder consisting of agglomerated primary particle with a minimum primary particle dimension of 0.2 to 0.8 μm, a specific surface area of 0.9 to 2.5 m2/g and a particle size distribution determined to ASTM B 822 corresponding to a D10 value of...	03/01/2011
7851104	Anode-supported fuel cell Anode-supported fuel cell, in particular SOFC, where stresses in the anode substrate are compensated for by a stress compensation layer. According to the invention said stress compensation layer is made porous by making a large number of vary small openings. These o...	12/14/2010
7824463	Method for the production of niobium and tantalum powder Process for the production of valve metal powders, in particular niobium and tantalum powder, by reduction of corresponding valve metal oxide powders by means of vaporous reducing metals and/or hydrides thereof, preferably in the presence of an inert carrier gas, wh...	11/02/2010
7763563	Niobium compounds and hydrates thereof, formulations containing the same, and methods of providing specifications therefor A niobium compound, ammonium(bisaquo oxobisoxalato)niobate (NH4)[Nb(O)(C2O4)2(H2O)2] and hydrates thereof, is described along with formulations containing the same and methods for creating a product s...	07/27/2010
7750099	Method for producing an aqueous dispersion containing a complex of poly(3,4-dialkoxythiophene) and a polyanion The method for producing an aqueous dispersion containing a complex of poly(3,4-dialkoxythiophene) and a polyanion comprises: a process of polymerizing 3,4-dialkoxythiophene in the presence of a polyanion by using an oxidizing agent in an aqueous solvent, in which p...	07/06/2010
7667038	Tantalum and niobium compounds The present invention relates to specific, novel tantalum and niobium compounds which can serve as starting materials for the preparation of chemical vapour deposition (CVD) precursors. ...	02/23/2010
7566796	Processes for preparing niobium alkoxides, and niobium alkoxides prepared thereby Processes for preparing high-purity niobium alkoxides, especially niobium ethoxide, are described which include: (a) providing a crude niobium alkoxide starting material comprising at least one compound of the general formula (I) Nb(OR)5 (I...	07/28/2009
7273943	Process for the preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides A novel process for the preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides (alcoholates), novel tantalum and niobium compounds and a process for their preparation are provided. The process comprises the steps of mixing crude metal alkoxide...	09/25/2007
7154740	Substituted poly(alkylenedioxythiophenes) as solid electrolytes in electrolytic capacitors Described is an electrolytic capacitor that includes: (a) a layer of an oxidizable metal; (b) a layer of an oxide of the oxidixable metal; (c) a solid electrolyte; and (d) a plurality of contacts. The solid electrolyte includes a polythiophene having recurring units...	12/26/2006
7118690	Dispersible polymer powders Disclosed herein is a water-dispersible powder consisting essentially of polymers T comprising recurring thiophene units and at least one further polyanionic polymer P and process for preparing and using the same. ...	10/10/2006
7102016	Preparation of 2,2′-di(3,4-ethylenedioxythiophene)s The invention relates to a process for preparing compounds of the general formula (I) to novel compounds of this substance class and also to their use as important precursors or for preparing important precursors...	09/05/2006
7090763	Process for the production of shaped articles of niobium or tantalum by electrochemical etching Process for the production of shaped articles of niobium or tantalum by electrochemical etching of a niobium or tantalum sheet covered by a structured photoresist mask in an aqueous solution containing hydrofluoric acid, the etching being effected under electrochemi...	08/15/2006
7066979	Valve metal powders and process for producing them Process for producing a valve metal powder by producing a precursor of desired morphology, converting the precursor into an oxide of the valve metal, stabilizing the structure of the oxide by heat treatment and reducing the stabilized oxide while retaining the morph...	06/27/2006
6992881	Capacitor powder Disclosed herein are capacitors having an anode based on niobium and a barrier layer based on niobium pentoxide, at least the barrier layer having a content of vanadium and process for their preparation and use. ...	01/31/2006
6936090	Process for isolating rhenium A process for elution of rhenium adsorbed on strongly basic ion-exchange resins by means of highly concentrated aqueous hydrochloric acid solution is described, in which the ion-exchange resin is treated with aqueous solution containing an oxidizing agent. ...	08/30/2005
6891016	Alkylenedioxythiophene dimers and trimers The invention relates to novel 3,4-alkylenedioxythiophene dimers and trimers, to their preparation and to their use as precursors for conductive polymers. ...	05/10/2005
6849208	Nickel mixed hydroxide, method for the producing the same, and the use thereof as a cathode material in alkaline batteries The invention relates to a nickel mixed hydroxide with Ni as the main element and with a layer structure, comprising at least one element Ma from the group comprising Fe, Cr, Co, Ti, Zr and Cu which is present in two different oxidation states which diffe...	02/01/2005
6821314	Capacitor powder An electrolyte capacitor containing a niobium anode, a niobium oxide barrier layer, a semiconducting cathode and an electrolyte is described, where the niobium oxide barrier comprises a least one metal from the group consisting of Al, Si, Ti, Zr, Mo, W, Y and Ta.	11/23/2004
6800396	Nickel hydroxide coated with cobaltous hydroxide A nickel hydroxide for rechargeable batteries which is provided with a cobalt hydroxide coating which is stable to oxidation is described. The stability to oxidation is achieved by covering the surface of the cobalt hydroxide layer with anions of weak inorganic oxyg...	10/05/2004
6752918	Method for producing nickel hydroxides A process is described for the production of spherical nickel hydroxide by anodic dissolution of a nickel electrode and precipitation of nickel hydroxide in a completely intermixed electrolysis cell, wherein an electrolysis brine is used which has a content of 20 to...	06/22/2004
6554885	Pre-alloyed powder A process is described for the production of metal powder and alloy powders containing at least one of the metals iron, copper, tin, cobalt or nickel, by mixing aqueous metal salt solutions with an aqueous carboxylic acid solution, separating the precipit...	04/29/2003

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Assignee: H. C. Starck GmbH