Patents by Inventor Xiuqin Yu

Xiuqin Yu 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).

  • Intermediate of Ertapenem, a composition comprising the same and preparation methods thereof
    Patent number: 9388184
    Abstract: Intermediates of Ertapenem of formula 2a wherein Np represents (I) or (II), and P1 and P2 represent carboxyl protecting groups, and their preparation methods. Compound 2a prepared by the present methods in solid form is amorphous. The present invention also relates to a composition comprising at least 95% of the intermediate of Ertapenem of formula 2a.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: July 12, 2016
    Assignee: CSPC ZHONGQI PHARMACEUTICAL TECHNOLOGY (SHIJIAZHUANG) CO., LTD.
    Inventors: Ying Shi, Kun Li, Zan Xie, Xuebin Zhao, Jian Lv, Xiuqin Yu
  • INTERMEDIATE OF ERTAPENEM, A COMPOSITION COMPRISING THE SAME AND PREPARATION METHODS THEREOF
    Publication number: 20120095209
    Abstract: Intermediates of Ertapenem of formula 2a wherein Np represents (I) or (II), and P1 and P2 represent carboxyl protecting groups, and their preparation methods. Compound 2a prepared by the present methods in solid form is amorphous. The present invention also relates to a composition comprising at least 95% of the intermediate of Ertapenem of formula 2a.
    Type: Application
    Filed: April 30, 2010
    Publication date: April 19, 2012
    Applicant: CSPC ZHONGQI PHARMACEUTICAL TECHNOLOGY (SHIJIAZHUANG) CO., LTD.
    Inventors: Ying Shi, Kun Li, Zan Xie, Xuebin Zhao, Jian Lv, Xiuqin Yu
  • Curtain holdback tie
    Patent number: D891233
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: July 28, 2020
    Inventor: Xiuqin Yu
  • Curtain holdback tie
    Patent number: D910424
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: February 16, 2021
    Assignee: Xiuqin Yu
    Inventor: Xiuqin Yu
  • Curtain holdback tie
    Patent number: D918022
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 4, 2021
    Inventor: Xiuqin Yu
  • Curtain holdback tie
    Patent number: D951079
    Type: Grant
    Filed: May 8, 2021
    Date of Patent: May 10, 2022
    Inventor: Xiuqin Yu