Patents by Inventor Xuexiao YING

Xuexiao YING 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).

  • Fidaxomicin purification method
    Patent number: 10316052
    Abstract: A fidaxomicin purification method, comprising: fermenting Actinoplanes sp. HS-16-20 to generate fermented liquid; conducting solid/liquid separation on the fermented liquid, soaking mycelium in an organic solvent, and filtering to obtain a solution containing fidaxomicin; treating the solution with nanofiltration concentrate, and separating to obtain fidaxomicin crude product; conducting preparative column chromatography on the fidaxomicin crude product, eluting with an acid aqueous solution containing an organic solvent, and separating to obtain the refined fidaxomicin product.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: June 11, 2019
    Assignee: ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
    Inventors: Huijun Ren, Daochao Li, Xuexiao Ying, Feng Chen, Linghui Zheng, Lingping Wang, Hua Bai
  • FIDAXOMICIN PURIFICATION METHOD
    Publication number: 20180179244
    Abstract: A fidaxomicin purification method, comprising: fermenting Actinoplanes sp. HS-16-20 to generate fermented liquid; conducting solid/liquid separation on the fermented liquid, soaking mycelium in an organic solvent, and filtering to obtain a solution containing fidaxomicin; treating the solution with nanofiltration concentrate, and separating to obtain fidaxomicin crude product; conducting preparative column chromatography on the fidaxomicin crude product, eluting with an acid aqueous solution containing an organic solvent, and separating to obtain the refined fidaxomicin product.
    Type: Application
    Filed: July 7, 2015
    Publication date: June 28, 2018
    Applicants: ZHEJIANG HISUN PHARMACEUTICAL CO., LTD., ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
    Inventors: Huijun REN, Daochao LI, Xuexiao YING, Feng CHEN, Linghui ZHENG, Lingping WANG, Hua BAI