Patents Assigned to H. C. Starck GmbH
  • Valve metal-oxide powder and method for producing said powder
    Patent number: 8101151
    Abstract: A process for the production of a valve metal oxide powder, in particular an Nb2O5 or Ta2O5 powder by continuous reaction of a fluoride-containing valve metal compound with a base in the presence of water and calcination of the resultant product, wherein the reaction is performed in just one reaction vessel and at a temperature of at least 45° C. Valve metal oxide powders obtainable in said manner which exhibit a spherical morphology, a D50 value of 10 to 80 ?m and an elevated BET surface area.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: January 24, 2012
    Assignee: H.C. Starck GmbH
    Inventors: Karsten Beck, Hady Seyeda, Klaus Lerch, Bianca Agnes Balan
  • DEVICE AND METHOD FOR THE PRODUCTION OF COMPOUNDS BY PRECIPITATION
    Publication number: 20110300470
    Abstract: The invention relates to a device and a method for the production of compounds by precipitation of solids from solutions, the physical and chemical properties of the solid particles formed on precipitation being flexible and can be independently fixable. Custom products can thus be produced with very high space-time yields and a particulate nickel/cobalt mixed hydroxide of formula NixCo1-x(OH)2, with a BET surface area of 20 m2/g and a tap density of greater than 2.4 g/cm3.
    Type: Application
    Filed: March 20, 2007
    Publication date: December 8, 2011
    Applicant: H.C. STARCK GMBH
    Inventors: Armin Olbrich, Juliane Meese-Marktscheffel, Matthias Jahn, Rüdiger Zertani, Gerd Maikowske, Sven Albrecht, Stefan Malcus, Josef Schmoll, Gabriele Christine Schmoll, Christian Peter Schmoll, Wolfgang Josef Schmoll, Volker Schmoll, Georg Wilhelm Schmoll, Michael Kruft
  • Process for the production of electrolyte capacitors
    Patent number: 8058135
    Abstract: 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.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: November 15, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Udo Merker, Wilfried Lövenich, Klaus Wussow, Ralph Tillmann
  • Tungstic acid powder consisting of spherical tungsten particles and method for producing same
    Patent number: 8052956
    Abstract: Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: November 8, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Sven Albrecht, Armin Olbrich, Michael Reiss, Frank Schrumpf, Juliane Meese-Marktscheffel, Uwe Kutzler
  • POLYTHIOPHENE COMPOSITIONS FOR IMPROVING ORGANIC LIGHT-EMITTING DIODE
    Publication number: 20110257277
    Abstract: The invention relates to compositions which include: (a) a polythiophene containing repeating units represented by the following general formula (I), wherein X represents, for example, —CH2—CH(CH2—O—(CH2)4SO3?H+)—; and (b) further polymers, that are different than polythiophene (a), and which contain SO3? M+ or COO?M+ groups. Also disclosed are electroluminescing (EL) arrangements that contain hole-injecting layers which include such compositions.
    Type: Application
    Filed: June 30, 2011
    Publication date: October 20, 2011
    Applicant: H.C. Starck GmbH & Co. KG
    Inventors: Andreas ELSCHNER, Knud REUTER, Peter Wilfried LOVENICH
  • PRECURSOR FOR THE PRODUCTION OF SINTERED METALLIC COMPONENTS, A PROCESS FOR PRODUCING THE PRECURSOR AND THE PRODUCTION OF COMPONENTS
    Publication number: 20110243785
    Abstract: A precursor for the production of a sintered metallic component includes a core comprising one particle of a first metallic powder having a particle size d90 of at least 50 ?m. A shell layer is disposed on the core. The shell layer comprises a binder and a second powder having a particle size d90 of less than 25 ?m. The precursor is powdered.
    Type: Application
    Filed: November 13, 2009
    Publication date: October 6, 2011
    Applicant: H.C STARCK GMBH
    Inventors: Ulf Waag, Peter Leute
  • Porous anode bodies comprising niobium suboxide and capacitors containing such anode bodies
    Patent number: 8029762
    Abstract: 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 agglomerating and coalescing the powder; and capacitors incorporating such anode bodies.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: October 4, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Christoph Schnitter, Holger Brumm, Christine Rawohl, Colin McCracken
  • MAGNESIUM DIBORIDE
    Publication number: 20110224085
    Abstract: An amorphous or a partially crystalline magnesium diboride comprising a crystalline material content of ?25% by weight as determined by an X-ray powder diffraction.
    Type: Application
    Filed: October 19, 2009
    Publication date: September 15, 2011
    Applicant: H.C. STARCK GMBH
    Inventor: Friedrich Wilhelm Karau
  • INORGANIC COMPOUNDS
    Publication number: 20110212330
    Abstract: The invention is related to a boride of a metal of transition group four of the periodic table of the elements, wherein at least 40 wt. % of the particles have a grain size of more than 106 ?m, determined by sieve analysis according to ASTM B 214, and these particles consist of grown, monocrystalline grains. The invention also relates to a cermet, wettable powder and a surface coating which contain the boride. The invention further relates to a process to prepare the boride. The invention additionally relates to a process to prepare a cermet or a wettable powder.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 1, 2011
    Applicant: H. C. Starck GmbH & Co. KG
    Inventors: Frank Schrumpf, Wolfgang Kiliani, Stefan Frässle, Thomas Schmidt
  • PROCESS FOR PRODUCING SHAPED REFRACTORY METAL BODIES
    Publication number: 20110206944
    Abstract: The present invention relates to a process for producing shaped articles composed of refractory metals.
    Type: Application
    Filed: June 18, 2007
    Publication date: August 25, 2011
    Applicant: H.C. Starck GmbH
    Inventors: Henning Uhlenhut, Uwe Blümling, Klaus Andersson, Bernd Döbling, Michael Svec, Karl-Hermann Buchner
  • Process for the purification of thiophenes
    Patent number: 7994345
    Abstract: The invention relates to a process for the purification of thiophenes by means of precipitation. The purified thiophenes are liquid at room temperature, have a purity of at least 99.50 wt. %, and are represented by the following general formula (I), wherein R1 and R2 independently of each other are, for example, a linear or branched C1-C20-alkyl group, or together form a fused C1-C20-dioxyalylene ring. The process involves: (I) precipitating the thiophene by cooling a solution of the thiophene and at least one solvent; or (II) precipitating the thiophene by adding the thiophene to a cooled solution of solvent and optionally the thiophene. The solutions are cooled to a temperature below the melting point of the thiophene.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: August 9, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Lutz Brassat, Stephan Kirchmeyer
  • POWDERED NIAM1 BM2C(O)X(OH)YCOMPOUNDS, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF IN BATTERIES
    Publication number: 20110180748
    Abstract: The invention is directed to a pulverulent compound of the formula NiaM1bM2bOx(OH)y where M1 is at least one element selected from the group consisting of Fe, Co, Zn, Cu and mixtures thereof, M2 is at least one element selected from the group consisting of Mn, Al, Cr, B, Mg, Ca, Sr, Ba, Si and mixtures thereof, 0.3?a?0.83, 0.1?b?0.5, 0.01?c?0.5, 0.01?x?0.99 and 1.01?y?1.99, wherein the ratio of tapped density measured in accordance with ASTM B 527 to the D50 of the particle size distribution measured in accordance with ASTM B 822 is at least 0.2 g/cm3·?m. The invention is also directed to a method for the production of the pulverulent compound and the use as a precursor material for producing lithium compounds for use in lithium secondary batteries.
    Type: Application
    Filed: July 23, 2008
    Publication date: July 28, 2011
    Applicant: H.C. Starck GmbH
    Inventors: Matthias Jahn, Gerd Maikowske, Stefan Malcus, Juliane Meese-Marktscheffel, Armin Olbrich, Rüdiger Zertani
  • METHOD FOR PURIFYING ELEMENTAL BORON
    Publication number: 20110176983
    Abstract: Elemental boron with a boron content of at least 96.8% by weight, an oxygen content of at most 1.6% by weight, a nitrogen content of at most 0.2% by weight, a crystallinity of 30% by weight or less, and a particle size distribution with a d100 value of 9 ?m or less.
    Type: Application
    Filed: August 28, 2009
    Publication date: July 21, 2011
    Applicant: H.C. STARCK GMBH
    Inventor: Friedrich Wilhelm Karau
  • VALVE METAL AND VALVE METAL OXIDE AGGLOMERATE POWDERS AND METHOD FOR THE PRODUCTION THEREOF
    Publication number: 20110170238
    Abstract: At least one of a valve metal sintered capacitor anode body and a suboxide valve metal sintered capacitor anode body with a particle density of >88% of a theoretical density.
    Type: Application
    Filed: August 25, 2009
    Publication date: July 14, 2011
    Applicant: H.C. STARCK GMBH
    Inventors: Christoph Schnitter, Holger Brumm
  • Process for producing aqueous dispersion of composite of poly(3,4-dialkoxythiophene) with polyanion
    Patent number: 7973180
    Abstract: The present invention provides a method for the production of an aqueous dispersion containing an electroconductive polymer component which enables electroconductive thin films which are outstanding in their transparency and electroconductivity to be formed, together with the aqueous dispersion obtained by said method. This method includes a stage in which a 3,4-dialkoxythiophene is polymerized in an aqueous solvent using an oxidizing agent in the presence of a polyanion and, in this stage, said oxidizing agent is added by the dropwise addition of a solution or dispersion containing said oxidizing agent to the reaction solution or, alternatively, in the polymerization stage, the alkali metal ion concentration in the reaction liquid is maintained at no more than 400 ppm.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: July 5, 2011
    Assignee: H.C. Starck GmbH
    Inventors: Yoshiyuki Morita, Yasuo Chikusa, Kyoko Miyanishi, Stephan Kirchmeyer, Wilfried Loevenich
  • Retarding oxidants for preparing conductive polymers
    Patent number: 7972534
    Abstract: 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 use of said oxidants for preparing solid electrolyte capacitors and conductive layers.
    Type: Grant
    Filed: March 20, 2004
    Date of Patent: July 5, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Udo Merker, Stephan Kirchmeyer, Klaus Wussow
  • VALVE METAL OXIDE FORMULATION
    Publication number: 20110160036
    Abstract: A formulation of at least one of a partially and a fully stabilized zirconium oxide powder includes at least one organic auxiliary substance wherein a pressing pressure so as to obtain a green density of at least 50% of a theoretical density is 200 MPa or less and a cohesiveness is 0.7 or more.
    Type: Application
    Filed: August 6, 2009
    Publication date: June 30, 2011
    Applicant: H.C. Starck GMBH
    Inventors: Benno Gries, Joerg Laube, Rolf Wagner
  • PROCESS FOR PRODUCING ELECTROLYTIC CAPACITORS HAVING A LOW LEAKAGE CURRENT
    Publication number: 20110128676
    Abstract: Process for producing a capacitor anode based on at least one of a valve metal and a compound having properties comparable to a valve metal includes providing a pressing or cutting tool which is at least one of made of and coated with a pressing or cutting tool material comprising at least one of a metal carbide, an oxide, a boride, a nitride, a silicide, a carbonitride or alloys thereof, a ceramic material, a hardened steel, an alloy steel, and a capacitor anode material. Particles of the at least one of a valve metal and a compound having properties comparable to a valve metal are pressed or cut with the pressing or cutting tool so as to produce a porous electrode body and form the capacitor anode.
    Type: Application
    Filed: May 13, 2009
    Publication date: June 2, 2011
    Applicant: H.C. STARCK GMBH
    Inventors: Hikmet Karabulut, Udo Merker, Knud Reuter, Gerd Passing
  • Process for the production of polyethylene dioxythiophenes
    Patent number: 7951901
    Abstract: 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 provide antistatic properties.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 31, 2011
    Assignee: H. C. Starck GmbH
    Inventors: Knud Reuter, Stephan Kirchmeyer, Friedrich Jonas
  • NANOSIZE STRUCTURES COMPOSED OF VALVE METALS AND VALVE METAL SUBOXIDES AND PROCESS FOR PRODUCING THEM
    Publication number: 20110123822
    Abstract: A strip-like or sheet-like valve metal or valve metal suboxide structure which has a transverse dimension of from 5 to 100 nm.
    Type: Application
    Filed: July 23, 2008
    Publication date: May 26, 2011
    Applicant: H.C. Starck GmbH
    Inventors: Gerhard Gille, Christoph Schnitter, Holger Brumm, Helmut Haas, Robert Müller, Manfred Bobeth