Patents by Inventor Chaotian Chen

Chaotian Chen 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).

  • Crystalline form of entecavir, its preparation and the pharmaceutical composition and uses thereof
    Patent number: 8937076
    Abstract: The present invention relates to a crystalline form of entecavir and its process for preparation, and provides a pharmaceutical composition comprising a therapeutically effective amount of the crystalline form of entecavir. Furthermore, the present invention also provides a use of the crystalline form of entecavir in preparation for a medicament for the treatment of hepatitis B viral infections. The present invention is beneficial toe preparations for pharmaceutical formulations and enhancements of its bioavailability.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: January 20, 2015
    Assignee: Zhejiang Medicine Co., Ltd. Xinchang Pharaceutical Factory
    Inventors: Weidong Ye, Jianyong Yuan, Jingjing Nie, Duanjun Xu, Chaotian Chen