Patents by Inventor Xiurong HU

Xiurong HU 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).

  • Crystal form of tasimelteon
    Patent number: 10654820
    Abstract: Crystal forms I and II of tasimelteon. Crystal form I: an X-ray powder diffraction spectrum using CuK? radiation and represented by a 2? angle has diffraction peaks at least at 7.2°±0.2°, 7.9°±0.2°, 10.6°±0.2°, 14.4°±0.2°, 15.9°±0.2°, 17.3°±0.2°, 21.0°±0.2°, 23.2°±0.2°, and 24.4°±0.2°. Crystal form II: an X-ray powder diffraction spectrum using CuK? radiation and represented by a 2? angle has diffraction peaks at least at 6.8°±0.2°, 12.1°±0.2°, 12.5°±0.2°, 13.1°±0.2°, 13.6°±0.2°, 13.8°±0.2°, 15.8°±0.2°, 17.0°±0.2°, 18.4°±0.2°, 20.8°±0.2°, 24.2°±0.2°, and 24.4°±0.2°. Crystal forms I and II of tasimelteon have advantages of excellent physicochemical property, good stability and solubility, and simple operation for preparation.
    Type: Grant
    Filed: February 19, 2017
    Date of Patent: May 19, 2020
    Assignee: ZHEJIANG JINGXIN PHARMACEUTICAL CO., LTD.
    Inventors: Jianrong Zhu, Chunyong Peng, Hongban Zhong, Xiurong Hu
  • CRYSTAL FORM OF TASIMELTEON
    Publication number: 20190119239
    Abstract: Crystal forms I and II of tasimelteon. Crystal form I: an X-ray powder diffraction spectrum using CuK? radiation and represented by a 2? angle has diffraction peaks at least at 7.2°±0.2°, 7.9°±0.2°, 10.6°±0.2°, 14.4°±0.2°, 15.9°±0.2°, 17.3°±0.2°, 21.0°±0.2°, 23.2°±0.2°, and 24.4°±0.2°. Crystal form II: an X-ray powder diffraction spectrum using CuK? radiation and represented by a 2? angle has diffraction peaks at least at 6.8°±0.2°, 12.1°±0.2°, 12.5°±0.2°, 13.1°±0.2°, 13.6°±0.2°, 13.8°±0.2°, 15.8°±0.2°, 17.0°±0.2°, 18.4°±0.2°, 20.8°±0.2°, 24.2°±0.2°, and 24.4°±0.2°. Crystal forms I and II of tasimelteon have advantages of excellent physicochemical property, good stability and solubility, and simple operation for preparation.
    Type: Application
    Filed: February 19, 2017
    Publication date: April 25, 2019
    Applicant: ZHEJIANG JINGXIN PHARMACEUTICAL CO., LTD.
    Inventors: Jianrong ZHU, Chunyong PENG, Hongban ZHONG, Xiurong HU