Patents by Inventor Qin ZHI

Qin ZHI 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).

  • Synthesis method for liraglutide with low racemate impurity
    Patent number: 11518794
    Abstract: A synthesis method for low-racemization impurity liraglutide comprises the following steps: performing synthesis to obtain a propeptide, coupling 2 to 5 peptides comprising Thr-Phe on the propeptide by using a solid-phase synthesis method; further, performing solid-phase synthesis to obtain a liraglutide resin; the liraglutide resin is cracked after modification, or the liraglutide resin is directly cracked, purified and frozen dry, so as to obtain the liraglutide.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: December 6, 2022
    Assignee: SHENZHEN JYMED TECHNOLOGY CO., LTD.
    Inventors: Yuqing Fu, Hongji Ma, Xinyu Li, Lixiang Zhang, Qin Zhi, Lifen Wu, Zicheng Liu
  • SYNTHESIS METHOD FOR LIRAGLUTIDE WITH LOW RACEMATE IMPURITY
    Publication number: 20190211073
    Abstract: A synthesis method for low-racemization impurity liraglutide comprises the following steps: performing synthesis to obtain a propeptide, coupling 2 to 5 peptides comprising Thr-Phe on the propeptide by using a solid-phase synthesis method; further, performing solid-phase synthesis to obtain a liraglutide resin; the liraglutide resin is cracked after modification, or the liraglutide resin is directly cracked, purified and frozen dry, so as to obtain the liraglutide.
    Type: Application
    Filed: August 8, 2017
    Publication date: July 11, 2019
    Inventors: Yuqing FU, Hongji MA, Xinyu LI, Lixiang ZHANG, Qin ZHI, Lifen WU, Zicheng LIU
  • Hinge pin removal tool
    Patent number: D1015109
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: February 20, 2024
    Assignee: Home Depot Product Authority, LLC
    Inventor: Qin Zhi Xu
  • Hinge pin removal tool
    Patent number: D1015110
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: February 20, 2024
    Assignee: Home Depot Product Authority, LLC
    Inventor: Qin zhi Xu