Patents by Inventor Ning Xia

Ning Xia 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: 9162953
    Abstract: The present invention relates to a process for creating a Carbon-Carbon bond (C—C) or a Carbon-Heteroatom bond (C-HE) by reacting a compound carrying a leaving group with a nucleophilic compound carrying a carbon atom or a heteroatom (HE) that can substitute for the leaving group, creating a C—C or C-HE bond, wherein the reaction takes place in the presence of an effective quantity of a catalytic system comprising iron and copper.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: October 20, 2015
    Assignees: CENTRE NATIONALE DE RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIER
    Inventors: Marc Taillefer, Ning Xia, Armelle Ouali
  • Patent number: 8927779
    Abstract: The present invention relates to a method for the hydroxylation of halogen aryl compounds carried out at a temperature lower than 200° C. in the presence of a catalytic system including a copper-based catalyst and a ligand L according to reaction scheme Formula (A), in which: R is selected from the groups having an acceptor inductive effect and the groups having a donor mesomer effect; M is selected from alkaline or alkaline-earth cations; X is a halogen atom; r is between 0 and 5; and the ligand L is selected from compounds having formula I.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: January 6, 2015
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Marc Taillefer, Anis Tlilli, Florian Monnier, Ning Xia
  • Patent number: 8862726
    Abstract: A method for profiling user activity in a mobile network, including extracting user identifiers from application sessions identified from a mobile network, analyzing the application sessions to determine session blocks based on shared IP address and a minimum separation time threshold, extracting a traffic marker from the session blocks based on a user identifier, identifying a first portion of the session blocks based on the user identifier, wherein the first portion is associated with first mobile network activities of a user identified by the user identifier, identifying a second portion of the session blocks based on the traffic marker, wherein the second portion is associated with second mobile network activities of the user, and analyzing the first portion and the second portion to determine a measure of a mobile network activity of the user.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: October 14, 2014
    Assignee: Narus, Inc.
    Inventors: Han See Song, Yong Liao, Marios Iliofotou, Ning Xia, Zhi-Li Zhang, Aleksandar Kuzmanovic, Antonio Nucci
  • Patent number: 8399680
    Abstract: The invention relates to a method for preparing arylamines and, in particular, a method for preparing aniline and anilines substituted on the aromatic ring from ammonia, under easily-industrialized mild conditions with good selectivity and yields, in the presence of a catalytic system including a copper complex.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: March 19, 2013
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Marc Taillefer, Ning Xia
  • Publication number: 20120157704
    Abstract: The present invention relates to a method for the hydroxylation of halogen aryl compounds carried out at a temperature lower than 200° C. in the presence of a catalytic system including a copper-based catalyst and a ligand L according to reaction scheme Formula (A), in which: R is selected from the groups having an acceptor inductive effect and the groups having a donor mesomer effect; M is selected from alkaline or alkaline-earth cations; X is a halogen atom; r is between 0 and 5; and the ligand L is selected from compounds having formula I.
    Type: Application
    Filed: June 8, 2010
    Publication date: June 21, 2012
    Inventors: Marc Taillefer, Anis Tlilli, Florian Monnier, Ning Xia
  • Publication number: 20110306782
    Abstract: The present invention concerns a process for creating a Carbon-Carbon bond (C—C) or a Carbon-Heteroatom bond (C-HE) by reacting a compound carrying a leaving group with a nucleophilic compound carrying a carbon atom or a heteroatom (HE) that can substitute for the leaving group, creating a C—C or C-HE bond, wherein the reaction takes place in the presence of an effective quantity of a. a catalytic system comprising a ligand and at least a metal-based catalyst, such a metal catalyst being chosen among iron or copper compounds proviso that only a single metal is present.
    Type: Application
    Filed: December 8, 2008
    Publication date: December 15, 2011
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)
    Inventors: Marc Taillefer, Ning Xia, Florian Monnier, Anis Tlili
  • Publication number: 20100298571
    Abstract: The invention relates to a method for preparing arylamines and, in particular, a method for preparing aniline and anilines substituted on the aromatic ring from ammonia, under easily-industrialised mild conditions with good selectivity and yields, in the presence of a catalytic system including a copper complex.
    Type: Application
    Filed: September 24, 2008
    Publication date: November 25, 2010
    Inventors: Marc Taillefer, Ning Xia
  • Publication number: 20090326240
    Abstract: The present invention relates to a process for creating a Carbon-Carbon bond (C—C) or a Carbon-Heteroatom bond (C—HE) by reacting a compound carrying a leaving group with a nucleophilic compound carrying a carbon atom or a heteroatom (HE) that can substitute for the leaving group, creating a C—C or C—HE bond, wherein the reaction takes place in the presence of an effective quantity of a catalytic system comprising iron and copper.
    Type: Application
    Filed: July 4, 2007
    Publication date: December 31, 2009
    Applicants: Centre National de la Recherche Scientifique (C.N.R.S.), Ecole Nationale Superieure de Chimie de Montpellier
    Inventors: Marc Taillefer, Ning Xia, Armelle Ouali