Patents by Inventor Chou-Hang Tann

Chou-Hang Tann 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).

  • Stereoselective Alkylation of Chiral 2-Methly-4 Protected Piperazines
    Publication number: 20100249411
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Inventors: Wenxue Wu, Hongbiao Liao, David J.S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
  • Stereoselective alkylation of chiral 2-methyl-4-protected piperazines
    Patent number: 7745626
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: June 29, 2010
    Assignee: Schering Corporation
    Inventors: Wenxue Wu, Hongbiao Liao, David J. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
  • Stereoselective alkylation of chiral 2-methyl-4-protected piperazines
    Publication number: 20050171120
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:
    Type: Application
    Filed: March 25, 2005
    Publication date: August 4, 2005
    Inventors: Wenxue Wu, Hongbiao Liao, David Tsai, David Andrews, Dinesh Gala, Gary Lee, Martin Schwartz, Timothy McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram Thiruvengadam, Chou-Hang Tann
  • Stereoselective alkylation of chiral 2-methyl-4-protected piperazines
    Patent number: 6872826
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: March 29, 2005
    Assignee: Schering Corporation
    Inventors: Wenxue Wu, Hongbiao Liao, David J. S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
  • Stereoselective alkylation of chiral 2-methyl-4-protected piperazines
    Publication number: 20030208074
    Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process: 1
    Type: Application
    Filed: March 27, 2003
    Publication date: November 6, 2003
    Applicant: Schering Corporation
    Inventors: Wenxue Wu, Hongbiao Liao, David J. S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann