Patents by Inventor He Xungui

He Xungui 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).

  • Palonosetron salts and processes for preparation and purification thereof
    Patent number: 8334388
    Abstract: Provided are novel salts of 2-(1-azabicyclo-[2.2.2]oct-3-yl)-2,3,3a,4,5,6-hexahydro-1H-benz[de]isoquinolin-1-one, methods of using such salts, and processes for producing such salts.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 18, 2012
    Assignee: Chemagis Ltd.
    Inventors: Tang Wensheng, Zhang Xingzhong, He Xungui, Yuan Wang, Joseph Kaspi
  • NOVEL PALONOSETRON SALTS AND PROCESSES FOR PREPARATION AND PURIFICATION THEREOF
    Publication number: 20100174080
    Abstract: Provided are novel salts of 2-(1-azabicyclo-[2.2.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 8, 2010
    Applicant: CHEMAGIS LTD.
    Inventors: Tang Wensheng, Zhang Xingzhong, He Xungui, Yuan Wang, Joseph Kaspi
  • Imatinib production process
    Patent number: 7550591
    Abstract: Provided is a process for producing imatinib and salts thereof, e.g., imatinib mesylate. The process includes reacting 4-(4-methyl-piperazin-1-ylmethyl)-benzoic acid with N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidine-amine in the presence of a carboxylic acid coupling reagent, to produce imatinib, and optionally converting the imatinib into a salt.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: June 23, 2009
    Assignee: Chemagis Ltd.
    Inventors: Liu Xing, He Xungui, Yuan Wang, Michel Bekhazi, Sonia Krivonos, Edna Danon
  • IMATINIB PRODUCTION PROCESS
    Publication number: 20080275055
    Abstract: Provided is a process for producing imatinib and salts thereof, e.g., imatinib mesylate. The process includes reacting4-(4-methyl-piperazin-1-ylmethyl)-benzoic acid with N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidine-amine in the presence of a carboxylic acid coupling reagent, to produce imatinib, and optionally converting the imatinib into a salt.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 6, 2008
    Applicant: CHEMAGIS LTD.
    Inventors: Liu Xing, He Xungui, Yuan Wang, Michel Bekhazi, Sonia Krivonos, Edna Danon