Patents by Inventor Narasimaiah Nagaraju

Narasimaiah Nagaraju 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).

  • Patent number: 7838459
    Abstract: The present invention is related to single and/or multiple-wall carbon nanotubes which may contain interstitial metals obtainable by a preparation process, comprising a catalytic step using a catalytic system, said catalytic system comprising a catalyst and a support, said support comprising hydroxides and/or carbonates or mixtures thereof with or without metal oxides. The present invention is also related to carbon fibers obtainable by said preparation process. The present invention also pertains in particular to said catalytic system and to said preparation process. Another aspect concerns the use of the nanotubes and of the catalytic system according to the invention.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: November 23, 2010
    Assignee: Facultes Universitaires Notre-Dame De La Paix
    Inventors: Janos B. Nagy, Narasimaiah Nagaraju, Isabelle Willems, Antonio Fonseca
  • Publication number: 20090325788
    Abstract: The present invention is related to single and/or multiple-wall carbon nanotubes which may contain interstitial metals obtainable by a preparation process, comprising a catalytic step using a catalytic system, said catalytic system comprising a catalyst and a support, said support comprising hydroxides and/or carbonates or mixtures thereof with or without metal oxides. The present invention is also related to carbon fibers obtainable by said preparation process. The present invention also pertains in particular to said catalytic system and to said preparation process. Another aspect concerns the use of the nanotubes and of the catalytic system according to the invention.
    Type: Application
    Filed: July 20, 2009
    Publication date: December 31, 2009
    Applicant: FACULTES UNIVERSITAIRES NOTRE-DAME DE LA PAIX
    Inventors: Janos B. Nagy, Narasimaiah Nagaraju, Isabelle Willems, Antonio Fonseca
  • Patent number: 7572427
    Abstract: The present invention is related to single and/or multiple-wall carbon nanotubes which may contain interstitial metals obtainable by a preparation process. The process includes a catalytic step using a catalytic system which includes a catalyst and a support. The support comprises hydroxides and/or carbonates or mixtures thereof with or without metal oxides. The present invention is also related to carbon fibers obtainable by said preparation process. The present invention also pertains in particular to said catalytic system and to said preparation process. Another aspect concerns the use of the nanotubes and of the catalytic system according to the invention.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: August 11, 2009
    Assignee: Facultes Universitaires Notre-Dame De La Paix
    Inventors: Janos B. Nagy, Narasimaiah Nagaraju, Isabelle Willems, Antonio Fonseca
  • Patent number: 7419650
    Abstract: The present invention is related to a method for producing functionalised short carbon nanotubes with at least one open tip by mechanical treatment of long carbon nanotubes, wherein said long nanotubes are submitted to mechanical milling forces in the presence of a reactant able to chemically react with the nanotubes so that short carbon nanotubes comprising at least one specific chemical group are obtained.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: September 2, 2008
    Assignee: Facultes Universitaries Notre-Dame De La Paix
    Inventors: Nathalie Pierard, Antonio Fonseca, Zoltan Konya, Narasimaiah Nagaraju, Isabelle Willems, Silvio Tollis, Geoffroy Bister, Janos B. Nagy, Dorina Popa
  • Publication number: 20040241080
    Abstract: The present invention is related to single and/or multiple-wall carbon nanotubes which may contain interstitial metals obtainable by a preparation process. The process includes a catalytic step using a catalytic system which includes a catalyst and a support. The support comprises hydroxides and/or carbonates or mixtures thereof with or without metal oxides. The present invention is also related to carbon fibers obtainable by said preparation process. The present invention also pertains in particular to said catalytic system and to said preparation process. Another aspect concerns the use of the nanotubes and of the catalytic system according to the invention.
    Type: Application
    Filed: June 25, 2004
    Publication date: December 2, 2004
    Inventors: Janos B. Nagy, Narasimaiah Nagaraju, Isabelle Willems, Antonio Fonseca
  • Publication number: 20040028599
    Abstract: The present invention is related to a method for producing functionalised short carbon nanotubes with at least one open tip by mechanical treatment of long carbon nanotubes, wherein said long nanotubes are submitted to mechanical milling forces in the presence of a reactant able to chemically react with the nanotubes so that short carbon nanotubes comprising at least one specific chemical group are obtained.
    Type: Application
    Filed: March 6, 2003
    Publication date: February 12, 2004
    Inventors: Nathalie Pierard, Antonio Fonseca, Zoltan Konya, Narasimaiah Nagaraju, Isabelle Willems, Silvio Tollis, Geoffroy Bister, B. Nagy Janos, Dorina Popa