Patents by Inventor Yuzhe GAO

Yuzhe GAO 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).

  • Xanthine derivative
    Patent number: 10358449
    Abstract: The present invention relates to a Xanthine derivative as shown in formula (I), wherein, R is selected from: R1 is selected from cyano or methoxycarbonyl; R2 is selected from hydrogen and halogen atoms, a linear or branched C1-6 alkyl group which is substituted or unsubstituted by 1 to 5 halogen atoms, a linear or branched C1-6 alkoxy group which is substituted or unsubstituted by 1 to 5 halogen atoms; X and Y are each independently selected from C or N; and n is 0, 1, 2, 3 or 4.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 23, 2019
    Assignee: Jiangsu Tasly Diyi Pharmaceutical Co, LTD.
    Inventors: Yuzhe Gao, Guocheng Wang
  • XANTHINE DERIVATIVE
    Publication number: 20180162860
    Abstract: The present invention relates to a Xanthine derivative as shown in formula (I), wherein, R is selected from: R1 is selected from cyano or methoxycarbonyl; R2 is selected from hydrogen and halogen atoms, a linear or branched C1-6 alkyl group which is substituted or unsubstituted by 1 to 5 halogen atoms, a linear or branched C1-6 alkoxy group which is substituted or unsubstituted by 1 to 5 halogen atoms; X and Y are each independently selected from C or N; and n is 0, 1, 2, 3 or 4.
    Type: Application
    Filed: May 26, 2016
    Publication date: June 14, 2018
    Inventors: Yuzhe GAO, Guocheng WANG
  • Crystalline forms of temozolomide and the method for preparing same
    Patent number: 9714250
    Abstract: Provided in the present invention are a new method for preparing the crystalline forms of Temozolomide and three types of crystalline form of Temozolomide by the method. Said method comprises the following steps: a Temozolomide is dissolved into dimethyl sulphoxide, a second organic solvent is added for recrystallization to prepare the crystalline forms of Temozolomide, wherein the second organic solvent is an alcohol, a ketone, a halohydrocarbon or an ester.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 25, 2017
    Assignee: Jiangsu Tasly Diyi Pharmaceutical Co., Ltd.
    Inventors: Guocheng Wang, Wenzheng Liu, Yuzhe Gao, Hailong Yang, Qingwei Hou, Yu Zhang
  • The Crystalline Forms of Temozolomide and the Method for Preparing Same
    Publication number: 20160289234
    Abstract: Provided in the present invention are a new method for preparing the crystalline forms of Temozolomide and three types of crystalline form of Temozolomide by the method. Said method comprises the following steps: a Temozolomide is dissolved into dimethyl sulphoxide, a second organic solvent is added for recrystallization to prepare the crystalline forms of Temozolomide, wherein the second organic solvent is an alcohol, a ketone, a halohydrocarbon or an ester.
    Type: Application
    Filed: October 28, 2014
    Publication date: October 6, 2016
    Inventors: Guocheng Wang, Wenzheng LIU, Yuzhe GAO, Hailong YANG, Qingwei HOU, Yu ZHANG