Patents by Inventor Xiu C. Wang

Xiu C. Wang 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).

  • 2,2-difluoropropionamide derivatives of bardoxolone methyl, polymorphic forms and methods of use thereof
    Patent number: 11873320
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 16, 2024
    Assignee: REATA PHARMACEUTICALS HOLDINGS, LLC
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • 2,2-DIFLUOROPROPIONAMIDE DERIVATIVES OF BARDOXOLONE METHYL, POLYMORPHIC FORMS AND METHODS OF USE THEREOF
    Publication number: 20220073559
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Application
    Filed: August 6, 2021
    Publication date: March 10, 2022
    Applicant: ABBVIE INC.
    Inventors: Ahmad Y. SHEIKH, Alessandra Mattei, Xiu C. WANG
  • 2,2-difluoropropionamide derivatives of bardoxolone methyl, polymorphic forms and methods of use thereof
    Patent number: 11117927
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 14, 2021
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • 2,2-DIFLUOROPROPIONAMIDE DERIVATIVES OF BARDOXOLONE METHYL, POLYMORPHIC FORMS AND METHODS OF USE THEREOF
    Publication number: 20200062800
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Application
    Filed: November 9, 2018
    Publication date: February 27, 2020
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • 2,2-DIFLUOROPROPIONAMIDE DERIVATIVES OF BARDOXOLONE METHYL, POLYMORPHIC FORMS AND METHODS OF USE THEREOF
    Publication number: 20180094020
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Application
    Filed: November 22, 2017
    Publication date: April 5, 2018
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • 2,2-difluoropropionamide derivatives of bardoxolone methyl, polymorphic forms and methods of use thereof
    Patent number: 9856286
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: January 2, 2018
    Assignee: AbbVie Inc.
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • 2,2-DIFLUOROPROPIONAMIDE DERIVATIVES OF BARDOXOLONE METHYL, POLYMORPHIC FORMS AND METHODS OF USE THEREOF
    Publication number: 20140323579
    Abstract: The present invention relates generally to the compound: N-((4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicen-4a-yl)-2,2-difluoropropanamide, polymorphic forms thereof, methods for preparation and use thereof, pharmaceutical compositions thereof, and kits and articles of manufacture thereof.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Inventors: Ahmad Y. Sheikh, Alessandra Mattei, Xiu C. Wang
  • HIV Protease Inhibiting Compounds
    Publication number: 20140194349
    Abstract: A compound of the formula is disclosed as an HIV protease inhibitor. Methods and compositions for inhibiting an HIV infection are also disclosed.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 10, 2014
    Applicant: AbbVie Inc.
    Inventors: David A. DeGoey, Charles A. Flentge, William J. Flosi, David J. Grampovnik, Dale J. Kempf, Larry L. Klein, Ming C. Yeung, John T. Randolph, Xiu C. Wang, Su Yu
  • Prodrugs of HIV protease inhibitors
    Patent number: 8426388
    Abstract: A compound of the formula is disclosed as a prodrug of an HIV protease inhibitor. Methods and compositions for inhibiting HIV protease activity and treating HIV infection are also disclosed.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: April 23, 2013
    Assignee: AbbVie Inc.
    Inventors: David A. DeGoey, William J. Flosi, David J. Grampovnik, Larry L. Klein, Dale J. Kempf, Xiu C. Wang
  • HIV protease inhibiting compounds
    Patent number: 7834043
    Abstract: A compound of the formula is disclosed as an HIV protease inhibitor. Methods and compositions for inhibiting an HIV infection are also disclosed.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: November 16, 2010
    Assignee: Abbott Laboratories
    Inventors: David A. DeGoey, Charles A. Flentge, William J. Flosi, David J. Grampovnik, Dale J. Kempf, Larry L. Klein, Ming C. Yeung, John T. Randolph, Xiu C. Wang, Su Yu
  • PRODRUGS OF HIV PROTEASE INHIBITORS
    Publication number: 20100286032
    Abstract: A compound of the formula is disclosed as a prodrug of an HIV protease inhibitor. Methods and compositions for inhibiting HIV protease activity and treating HIV infection are also disclosed.
    Type: Application
    Filed: April 7, 2010
    Publication date: November 11, 2010
    Applicant: Abbott Laboratories
    Inventors: David A. DeGoey, William J. Flosi, David J. Grampovnik, Larry L. Klein, Dale J. Kempf, Xiu C. Wang
  • HIV Protease Inhibiting Compounds
    Publication number: 20100249181
    Abstract: A compound of the formula is disclosed as an HIV protease inhibitor. Methods and compositions for inhibiting an HIV infection are also disclosed.
    Type: Application
    Filed: June 10, 2010
    Publication date: September 30, 2010
    Applicant: ABBOTT LABORATORIES
    Inventors: David A. DeGoey, Charles A. Flentge, William J. Flosi, David J. Grampovnik, Dale J. Kempf, Larry L. Klein, Ming C. Yeung, John T. Randolph, Xiu C. Wang, Su Yu
  • Prodrugs of HIV protease inhibitors
    Patent number: 7718633
    Abstract: A compound of the formula is disclosed as a prodrug of an HIV protease inhibitor. Methods and compositions for inhibiting HIV protease activity and treating HIV infection are also disclosed.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: May 18, 2010
    Assignee: Abbott Laboratories
    Inventors: David A. DeGoey, William J. Flosi, David J. Grampovnik, Larry L. Klein, Dale J. Kempf, Xiu C. Wang
  • Process for the preparation of iopamidol
    Patent number: 7282607
    Abstract: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: October 16, 2007
    Assignee: Bracco Imaging, S.p.A.
    Inventors: Richard A. Lorenzini, Ashok V. Bhatia, Steven A. Chamberlin, Keith A. Drengler, John J. Hufnagel, Xiu C. Wang
  • Process for the preparation of iopamidol
    Patent number: 7115778
    Abstract: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: October 3, 2006
    Assignee: Bracco imaging, S.p.A.
    Inventors: Richard A. Lorenzini, Ashok V. Bhatia, Steven A. Chamberlin, Keith A. Drengler, John J. Hufnagel, Xiu C. Wang
  • Process for the preparation of iopamidol
    Patent number: 6875887
    Abstract: A compound and salts and enantiomers thereof, having the formula: wherein R7 is an acyl group.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: April 5, 2005
    Assignee: Bracco Imaging S.p.A.
    Inventors: Richard A. Lorenzini, Ashok V. Bhatia, Steven A. Chamberlin, Keith A. Drengler, John J. Hufnagel, Xiu C. Wang
  • Process for the preparation of iopamidol
    Publication number: 20040236150
    Abstract: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
    Type: Application
    Filed: June 16, 2004
    Publication date: November 25, 2004
    Inventors: Richard A. Lorenzini, Ashok V. Bhatia, Steven A. Chamberlin, Keith A. Drengler, John J. Hufnagel, Xiu C. Wang
  • Process for the preparation of iopamidol
    Patent number: 6803485
    Abstract: The present invention discloses a process for the preparation of pure non-ionic contrast agents. The invention also includes a method for purifying the non-ionic contrast agents.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: October 12, 2004
    Assignee: Bracco Imaging S.p.A.
    Inventors: Richard A. Lorenzini, Ashok V. Bhatia, Steven A. Chamberlin, Keith A. Drengler, John J. Hufnagel, Xiu C. Wang
  • Process for producing 13-cis retinoic acid
    Publication number: 20010018533
    Abstract: The process of the present invention relates to a process for producing 1 3-cis retinoic acid. The process of the present invention involves reacting a Wittig salt in a solvent with a butenolide in the presence of a weak base and optionally, a Lewis acid.
    Type: Application
    Filed: January 18, 2000
    Publication date: August 30, 2001
    Inventors: Xiu C. Wang, Ashok V. Bhatia, Azad Hossain, Timothy B. Towne
  • Process for producing 13-cis retinoic acid
    Patent number: 6124485
    Abstract: The process of the present invention relates to a process for producing 1 3-cis retinoic acid. The process of the present invention involves reacting a Wittig salt in a solvent with a butenolide in the presence of a weak base and a Lewis acid.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: September 26, 2000
    Assignee: Abbott Laboratories
    Inventors: Xiu C. Wang, Ashok V. Bhatia, Azad Hossain, Timothy B. Towne