Patents by Inventor Dingfeng Zhang

Dingfeng Zhang 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 Thiofuran Pyridazine Compound, Preparation Method Therefor And Application Thereof
    Publication number: 20230183259
    Abstract: The present invention provides a crystal form of a thiofuran pyridazine compound, a preparation method therefor and an application thereof. The crystal form of the thiofuran pyridazine compound is (S)-2-(4-fluorophenyl)-4-(piperidine-3-aminomethyl)thieno[2,3-d] pyridazine-7-carboxamide hydrochloride of formula (I). The crystal form of the thiofuran pyridazine compound in the present invention has higher stability and is stored especially in high humidity conditions, and thus is suitable for preparing various forms of drugs.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 15, 2023
    Inventors: Dadong SHEN, Yonghui LV, Guofeng WU, Dingfeng ZHANG, Ruiwei CAO
  • Glycopeptide compound or pharmaceutical salt thereof and method for preparing same, and pharmaceutical compositions and applications thereof
    Patent number: 9982019
    Abstract: The present invention provides a glycopeptide compound or pharmaceutically acceptable salt thereof as shown in Formula (I) or (II), and a method for preparing same, and pharmaceutical compositions and applications thereof, wherein the definition of R1, R2, R3, R4, R5 is the same as that of the specification. The glycopeptide compound of the present invention has in-vitro antibacterial activity and has important significance for development of new antibacterial agents.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: May 29, 2018
    Inventors: Dingfeng Zhang, Yuanyuan Ge, Mei Ge, Weicheng Zhou, Wei Wei, Shunli Zhang, Lingao Ruan, Zhenren Liu, Chang Shao
  • Glycopeptide Compound Or Pharmaceutical Salt Thereof And Method For Preparing Same, And Pharmaceutical Compositions And Applications Thereof
    Publication number: 20150353607
    Abstract: The present invention provides a glycopeptide compound or pharmaceutically acceptable salt thereof as shown in Formula (I) or (II), and a method for preparing same, and pharmaceutical compositions and applications thereof, wherein the definition of R1, R2, R3, R4, R5 is the same as that of the specification. The glycopeptide compound of the present invention has in-vitro antibacterial activity and has important significance for development of new antibacterial agents.
    Type: Application
    Filed: December 26, 2013
    Publication date: December 10, 2015
    Inventors: Dingfeng Zhang, Yuanyuan Ge, Mei Ge, Weicheng Zhou, Wei Wei, Shunli Zhang, Lingao Ruan, Zhenren Liu, Chang Shao