Patents by Inventor Hady Seyeda

Hady Seyeda 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).

  • 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
  • Niobium compounds and hydrates thereof, formulations containing the same, and methods of providing specifications therefor
    Patent number: 7763563
    Abstract: 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 specification for a batch, lot, or shipment of such compounds, comprising specifying at least one property value for said batch, lot, or shipment.
    Type: Grant
    Filed: September 16, 2006
    Date of Patent: July 27, 2010
    Assignee: H. C. Starck GmbH
    Inventors: Karsten Beck, Hady Seyeda, Udo Sulkowski, Axel Rosenkranz
  • Valve metal oxide powders and process for the production thereof
    Patent number: 7674450
    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 31, 2004
    Date of Patent: March 9, 2010
    Assignee: H. C. Starck GmbH
    Inventors: Karsten Beck, Hady Seyeda, Klaus Lerch, Bianca Agnes Balan
  • VALVE METAL-OXIDE POWDER AND METHOD FOR PRODUCING SAID POWDER
    Publication number: 20100028678
    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: Application
    Filed: August 18, 2009
    Publication date: February 4, 2010
    Applicant: H. C. Starck GmbH
    Inventors: Karsten Beck, Hady Seyeda, Klaus Lerch, Bianca Agnes Balan
  • 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
  • Niobium Compound
    Publication number: 20080254970
    Abstract: 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 specification for a batch, lot, or shipment of such compounds, comprising specifying at least one property value for said batch, lot, or shipment.
    Type: Application
    Filed: September 16, 2006
    Publication date: October 16, 2008
    Applicant: H.C. Starck GmbH
    Inventors: Karsten Beck, Hady Seyeda, Udo Sulkowski, Axel Rosenkranz
  • Valve Metal Oxide Powders And Process For The Production Thereof
    Publication number: 20080025912
    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: Application
    Filed: August 31, 2004
    Publication date: January 31, 2008
    Inventors: Karsten Beck, Hady Seyeda, Klaus Lerch, Bianca Agnes Balan
  • Niobium compound
    Patent number: 7241911
    Abstract: The present invention relates to novel, water-soluble niobium compounds, a process for their preparation and their formulations.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: July 10, 2007
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Karsten Beck, Hady Seyeda, Udo Sulkowski, Axel Rosenkranz
  • Niobium compound
    Publication number: 20070073072
    Abstract: The present invention relates to novel, water-soluble niobium compounds, a process for their preparation and their formulations.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 29, 2007
    Inventors: Karsten Beck, Hady Seyeda, Udo Sulkowski, Axel Rosenkranz
  • 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
  • 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