Patents by Inventor Shushan Feng

Shushan Feng 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).

  • Economical process for preparing (S, S)-2, 8-diazabicyclo[4.3.0]nonane and its enantiomer
    Patent number: 7692015
    Abstract: The present invention relates to a novel and economical process for preparing (S,S)-2,8-diazabicyclo[4.3.0]nonane, a valuable intermediate used for constructing quinolone and naphthyridine derivatives having antibacterial effectiveness, e.g. moxifloxacin and its enantiomer.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: April 6, 2010
    Inventors: Zheqing Wang, Shushan Feng, Yongzhi Cheng