Patents by Inventor Christoph Schnitter

Christoph Schnitter 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).

  • Sintered bodies based on niobium suboxide
    Publication number: 20080260939
    Abstract: Disclosed are sintered bodies that include: (a) 30 to 100 mol % of NbOx, wherein 0.5<x<1.5; and (b) 0 to 70 mol % of MgO. The sintered bodies may be used as inert apparatuses in the production of niobium suboxide powder or niobium suboxide anodes, or as chemically resistant components in chemical apparatuses.
    Type: Application
    Filed: June 13, 2008
    Publication date: October 23, 2008
    Applicant: H. C. Starck GmbH
    Inventors: Christoph Schnitter, Gerhard Wotting
  • Capacitor
    Publication number: 20080212263
    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: Application
    Filed: June 1, 2006
    Publication date: September 4, 2008
    Applicant: H. C. Starck GmbH
    Inventors: Christoph Schnitter, Holger Brumm, Christine Rawohl, Colin Mccracken
  • Sintered bodies based on niobium suboxide
    Patent number: 7419926
    Abstract: Disclosed are sintered bodies that include: (a) 30 to 100 mol % of NbOx, wherein 0.5<x<1.5; and (b) 0 to 70 mol % of MgO. The sintered bodies may be used as inert apparatuses in the production of niobium suboxide powder or niobium suboxide anodes, or as chemically resistant components in chemical apparatuses.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: September 2, 2008
    Assignee: H.C. Starck GmbH
    Inventors: Christoph Schnitter, Gerhard Wötting
  • Inorganic Compounds
    Publication number: 20080199393
    Abstract: Disclosed is a niobium suboxide powder for the manufacture of capacitors with higher break down voltages, higher temperatures of operation and elongated lifetimes. The powder is doped with nitrogen which is at least partly present in the form homogeneously distributed, x-ray detectable Nb2N-crystal domains. The niobium suboxide powder contains niobium suboxide particles having a bulk nitrogen content of between 500 to 20,000 ppm.
    Type: Application
    Filed: May 31, 2006
    Publication date: August 21, 2008
    Applicant: H.C. Starck GmbH
    Inventors: Christoph Schnitter, Holger Brumm, Christine Rawohl, Colin McCracken
  • Process for producing capacitors
    Patent number: 7410609
    Abstract: The invention relates to a process for producing capacitors based on niobium suboxide, and having an insulator layer of niobium pentoxide. Also described is a powder mixture suitable for production of capacitors. Pressed bodies produced from the powder mixture, and capacitors having specific properties are also disclosed.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: August 12, 2008
    Assignee: H.C. Starck GmbH
    Inventor: Christoph Schnitter
  • Niobium suboxide powder
    Patent number: 7381396
    Abstract: A niobium suboxide powder comprising 100 to 600 ppm of magnesium is described. The niobium suboxide powder may (alternatively or in addition to 100 to 600 ppm of magnesium) further include 50 to 400 ppm of molybdenum and/or tungsten. The niobium suboxide powder is suitable for the production of: capacitors having an insulator layer of niobium pentoxide; capacitor anodes produced from the niobium suboxide powder; and corresponding capacitors.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: June 3, 2008
    Assignee: H.C. Starck GmbH
    Inventors: Oliver Thomas, Christoph Schnitter
  • Process for producing niobium suboxide
    Patent number: 7341705
    Abstract: A method is described for preparing a niobium suboxide represented by the formula, NbOx, in which 0.7<x<1.3. The method involves reacting NbOy (in which y<1.8<2.1) with a stoichiometric amount of niobium metal, in the presence of hydrogen. The niobium suboxide produced by such method may be used to fabricate anodes for solid electrolyte capacitors.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: March 11, 2008
    Assignee: H.C. Starck GmbH
    Inventor: 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
  • Sintered bodies based on niobium suboxide
    Publication number: 20050103638
    Abstract: Disclosed are sintered bodies that include: (a) 30 to 100 mol % of NbOx, wherein 0.5<x<1.5; and (b) 0 to 70 mol % of MgO. The sintered bodies may be used as inert apparatuses in the production of niobium suboxide powder or niobium suboxide anodes, or as chemically resistant components in chemical apparatuses.
    Type: Application
    Filed: October 12, 2004
    Publication date: May 19, 2005
    Inventors: Christoph Schnitter, Gerhard Wotting
  • 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
  • Process for producing capacitors
    Publication number: 20050018384
    Abstract: The invention relates to a process for producing capacitors based on niobium suboxide, and having an insulator layer of niobium pentoxide. Also described is a powder mixture suitable for production of capacitors. Pressed bodies produced from the powder mixture, and capacitors having specific properties are also disclosed.
    Type: Application
    Filed: July 19, 2004
    Publication date: January 27, 2005
    Inventor: Christoph Schnitter
  • Process for producing niobium suboxide
    Publication number: 20050019581
    Abstract: A method is described for preparing a niobium suboxide represented by the formula, NbOx, in which 0.7<x<1.3. The method involves reacting NbOy (in which y<1.8<2.1) with a stoichiometric amount of niobium metal, in the presence of hydrogen. The niobium suboxide produced by such method may be used to fabricate anodes for solid electrolyte capacitors.
    Type: Application
    Filed: July 19, 2004
    Publication date: January 27, 2005
    Inventor: Christoph Schnitter
  • Niobium suboxide powder
    Publication number: 20050013765
    Abstract: A niobium suboxide powder comprising 100 to 600 ppm of magnesium is described. The niobium suboxide powder may (alternatively or in addition to 100 to 600 ppm of magnesium) further include 50 to 400 ppm of molybdenum and/or tungsten. The niobium suboxide powder is suitable for the production of: capacitors having an insulator layer of niobium pentoxide; capacitor anodes produced from the niobium suboxide powder; and corresponding capacitors.
    Type: Application
    Filed: July 13, 2004
    Publication date: January 20, 2005
    Inventors: Oliver Thomas, 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
  • 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