Patents by Inventor Karlheinz Reichert

Karlheinz Reichert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Capacitor powder
    Patent number: 7833511
    Abstract: 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.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: November 16, 2010
    Assignee: H.C. Starck GmbH
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • CAPACITOR POWDER
    Publication number: 20090278095
    Abstract: 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.
    Type: Application
    Filed: October 30, 2008
    Publication date: November 12, 2009
    Applicant: H.C. Starck GmbH
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • Valve metal powders
    Patent number: 7485257
    Abstract: A valve metal powder by is prepared by a particular set of sequential steps that involves the use of precursor having preformed morphology. The method by which the valve metal is prepared includes a stabilization step that results in the valve metal powder having secondary and tertiary structures that each corresponds to the secondary and tertiary structures of the precursor. Also described is a method of producing solid electrolyte capacitors that include the valve metal powder of the present invention.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: February 3, 2009
    Assignee: H.C. Starck GmbH
    Inventors: Josua Löffelholz, Hady Seyeda, Rüdiger Wolf, Karlheinz Reichert, Christoph Schnitter
  • Valve metal powders
    Publication number: 20060219055
    Abstract: A valve metal powder by is prepared by a particular set of sequential steps that involves the use of precursor having preformed morphology. The method by which the valve metal is prepared includes a stabilization step that results in the valve metal powder having secondary and tertiary structures that each corresponds to the secondary and tertiary structures of the precursor. Also described is a method of producing solid electrolyte capacitors that include the valve metal powder of the present invention.
    Type: Application
    Filed: September 28, 2005
    Publication date: October 5, 2006
    Inventors: Josua Loffelholz, Hady Seyeda, Rudiger Wolf, Karlheinz Reichert, Christoph Schnitter
  • Valve metal powders and process for producing them
    Patent number: 7066979
    Abstract: 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 morphology. Valve metal powders obtainable in this way, in particular comprising spherical agglomerates with a mean agglomerate size of 10–80 ?m, preferably 20–40 ?m, and use of these valve metal powders to produce solid electrolyte capacitors.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: June 27, 2006
    Assignee: H. C. Starck GmbH
    Inventors: Josua Löffelholz, Hady Seyeda, Rüdiger Wolf, Karlheinz Reichert, Christoph Schnitter
  • Capacitor powder
    Patent number: 6992881
    Abstract: 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.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: January 31, 2006
    Assignee: H. C. Starck GmbH
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • Capacitor powder
    Publication number: 20050094354
    Abstract: 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.
    Type: Application
    Filed: December 3, 2004
    Publication date: May 5, 2005
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • Capacitor powder
    Patent number: 6821314
    Abstract: 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.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: November 23, 2004
    Assignee: H. C. Starck GmbH
    Inventors: Karlheinz Reichert, Oliver Thomas, Christoph Schnitter
  • Niobium-based capacitor anode
    Patent number: 6762927
    Abstract: An anode is described that has a niobium-based barrier layer, which includes a niobium metal core, a conducting niobium suboxide layer and a dielectric barrier layer of niobium pentoxide.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: July 13, 2004
    Assignee: H.C. Starck GmbH & Co. KG
    Inventors: Christoph Schnitter, Karlheinz Reichert
  • Capacitor powder
    Publication number: 20040028922
    Abstract: 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.
    Type: Application
    Filed: December 16, 2002
    Publication date: February 12, 2004
    Inventors: Karlheinz Reichert, Christoph Schnitter
  • Valve metal powders and process for producing them
    Publication number: 20030230167
    Abstract: 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 morphology. Valve metal powders obtainable in this way, in particular comprising spherical agglomerates with a mean agglomerate size of 10-80 &mgr;m, preferably 20-40 &mgr;m, and use of these valve metal powders to produce solid electrolyte capacitors.
    Type: Application
    Filed: March 7, 2003
    Publication date: December 18, 2003
    Inventors: Josua Loeffelholz, Hady Seyeda, Rudiger Wolf, Karlheinz Reichert, Christoph Schnitter
  • Metal powders produced by the reduction of the oxides with gaseous magnesium
    Patent number: 6558447
    Abstract: Metal powder Ta and/or Nb, with or without one or metals from the group Ta, Nb, Ti, Mo, W, V, Zr and Hf, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth metal, to near complete reduction, leaching, further deoxidation and agglomeration, the powder so produced being sinterable to capacitor anode form and processable to other usages.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: May 6, 2003
    Assignee: H.C. Starck, Inc.
    Inventors: Leonid N. Shekhter, Terrance B. Tripp, Leonid L. Lanin, Karlheinz Reichert, Oliver Thomas, Joachim Vieregge
  • Niobium-based capacitor anode
    Publication number: 20020080552
    Abstract: An anode is described that has a niobium-based barrier layer, comprising a niobium metal core, a conducting niobium suboxide layer and a dielectric barrier layer of niobium pentoxide.
    Type: Application
    Filed: August 23, 2001
    Publication date: June 27, 2002
    Inventors: Christoph Schnitter, Karlheinz Reichert
  • Tantalum powder, method for producing same powder and sintered anodes obtained from it
    Patent number: 6238456
    Abstract: The present invention discloses a tantalum powder for capacitors and a method for making said tantalum powder wherein agglomerated tantalum powder is produced by means of thermal agglomeration of starting tantalum powders in the presence of hydrogen.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: May 29, 2001
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Rüdiger Wolf, Karlheinz Reichert, Heike Biermann, Josua Löffelholz, Detlef Breithaupt
  • Tantalum powder, method for producing same powder and sintered anodes obtained from it
    Patent number: 6193779
    Abstract: The invention relates a tantalum powder free of alkali and fluorine, which for a relatively small primary particle size has comparatively large secondary particles and is suitable for producing capacitors with a specific charge of between 100,000 and 180,000 &mgr;FV/g at specific residual currents of less than 2nA/&mgr;FV.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: February 27, 2001
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Karlheinz Reichert, Rüdiger Wolf, Christine Rawohl
  • Nb, Ta and Ti salt solutions and processes for the production and use thereof
    Patent number: 5914417
    Abstract: The present invention relates to novel organometallic compounds of the general formula M(OH).sub.y (A).sub.V (B).sub.z, wherein M is Ti(IV), Nb(V) or Ta(V) and x +y+z=5 for Nb and Ta and x+y+z=4 for Ti and A means an alkoxide ligand of diols and/or glycol monoethers and B is a carboxylate ligand of fatty acids of a carbon chain length of C.sub.6 -C.sub.19, and to processes for the production and use thereof.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: June 22, 1999
    Assignee: H.C. Starck GmbH & Co. KG
    Inventors: Karlheinz Reichert, Wolfgang Simon, Harald Troger, Gisbert Ebeling
  • Process for removing antimony from hydrofluoric acid solutions which contain Ta/Nb
    Patent number: 5908489
    Abstract: The present invention relates to a process for removing antimony from hydrofluoric acid solutions which contain Ta/Nb and have an acidity of >18 N, by addition of a base metal reducing agent to the solution and heating at 40 to 60.degree. C. for 4 to 8 hours.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: June 1, 1999
    Assignee: H.C. Starck GmbH & Co KG
    Inventors: Walter Bludssus, Karlheinz Reichert, Uwe Bohmke
  • Metal tungstates and method of preparing them and their use
    Patent number: 5874056
    Abstract: Phase-pure, crystalline tungstates of general composition Me(II)WO.sub.4, where Me(II)=Co, Ni, Zn, Pb, Mg, Ca, Sr and/or Ba. These are prepared by wet mixing tungsten components (preferably ammonium paratungstate or metatungstate) with corresponding sponding Me(II) oxides and used, preferably, in making perovskites and X-ray intensifier phosphors.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: February 23, 1999
    Assignee: H.C Starck GmbH & Co. KG
    Inventors: Walter Bludssus, Karlheinz Reichert, Udo Sulkowski
  • Metal niobates and/or tantalates, their preparation and perovskites formed from them
    Patent number: 5721182
    Abstract: Highly reactive metal niobates and/or metal tantalates of the general formula Me(II)A.sub.2 O.sub.6 or Me(III)AO.sub.4, a method for the preparation thereof, their further processing to form perovskites of the general formula X(B'B")O.sub.3 wherein X signifies Pb and/or Ba, B' signifies Mg, Fe, Co, Ni, Cr, Mn, Cd, Ti, Zr and/or Zn and B" signifies Nb and/or Ta, as well as these perovskites are provided through the present invention. An additive of Li, Na and/or K is provided to the niobates/tantalates in 0.1 to 20 mol-%.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: February 24, 1998
    Assignee: H.C. Starck, GmbH & Co KG
    Inventors: Karlheinz Reichert, Falko Schlenkrich
  • Process for the production of lead metal niobates
    Patent number: 5288474
    Abstract: Process for the production of phase-pure highly reactive lead metal niobates of perovskite structure corresponding to the general formula Pb.sub.3 Me(II)Nb.sub.2 O.sub.9 or Pb.sub.2 Me(III)NbO.sub.6, where Me.dbd.Mg, Fe, Co, Ni, Cr, Mn, Cd, Cu and/or Zn, in which perovskite intermediates are formed from corresponding salt solutions, separated off, dried and calcined at temperatures of 500 to 1000.degree. C.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: February 22, 1994
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Karlheinz Reichert, Harald Kroger