Patents by Inventor Yuanhua LIU

Yuanhua LIU 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).

  • Processes to produce brivaracetam
    Patent number: 12221413
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: February 11, 2025
    Assignee: SUZHOU PENGXU PHARMATECH CO. LTD.
    Inventors: Peng Wang, Pixu Li, Qiang Wei, Yuanhua Liu
  • PROCESSES TO PRODUCE BRIVARACETAM
    Publication number: 20240199541
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Application
    Filed: January 24, 2019
    Publication date: June 20, 2024
    Applicant: SUZHOU PENGXU PHARMATECH CO. LTD.
    Inventors: Peng WANG, Pixu LI, Qiang WEI, Yuanhua LIU
  • Processes to produce brivaracetam
    Patent number: 11673862
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: June 13, 2023
    Assignee: SUZHOU PENGXU PHARMATECH CO. LTD.
    Inventors: Peng Wang, Pixu Li, Qiang Wei, Yuanhua Liu
  • Processes to produce elagolix
    Patent number: 11377426
    Abstract: The present invention relates to a scalable process for the making of elagolix, its salts and the process of intermediate compounds.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: July 5, 2022
    Assignee: SUZHOU PENGXU PHARMATECH CO., LTD.
    Inventors: Pixu Li, Peng Wang, Xiangyong Gu, Hailong Yang, Zhong Wang, Qianghua Jiang, Yuanhua Liu, Hui Xia
  • PROCESSES TO PRODUCE ELAGOLIX
    Publication number: 20210214318
    Abstract: The present invention relates to a scalable process for the making of elagolix, its salts and the process of intermediate compounds.
    Type: Application
    Filed: December 3, 2018
    Publication date: July 15, 2021
    Applicant: SUZHOU PENGXU PHARMATECH CO., LTD.
    Inventors: Pixu LI, Peng WANG, Xiangyong GU, Hailong YANG, Zhong WANG, Qianghua JIANG, Yuanhua LIU, Hui XIA
  • OPTIMIZATION METHOD FOR INTEGRATED CIRCUIT WAFER TEST
    Publication number: 20200309845
    Abstract: The present invention relates to an optimization method for an integrated circuit wafer test, which is applied in an integrated circuit wafer test process. By means of pre-specifying and storing coordinates of a die to be tested on a wafer in a test system, then testing the pre-specified die according to a design map by means of a test process, and adjusting in real time a range of pre-specified coordinates according to a test result of a current die, a desired test coordinate map is finally obtained so as to cover the maximum number of fail dies in an optimized solution, thereby reducing test time, improving testing efficiency, reducing the frequency of testing hardware usage and increasing service life. By means of calculating a suitable coverage number in the present invention, a smaller number of fail chips that reach a package will also be obtained without increasing the cost of the package. At the same time, the number of probe card tests is reduced, and the hardware service life is increased.
    Type: Application
    Filed: April 2, 2018
    Publication date: October 1, 2020
    Inventors: Hua Wang, Zhiyong Zhang, Jianbo Ling, Jianhua Qi, Yuanhua Liu, Haiying Ji
  • PROCESSES TO PRODUCE BRIVARACETAM
    Publication number: 20190152909
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Applicant: ESTEVE QUIMlCA S.A.
    Inventors: Peng WANG, Pixu LI, Qiang WEI, Yuanhua LIU
  • PROCESSES TO PRODUCE BRIVARACETAM
    Publication number: 20190152908
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Applicant: ESTEVE QUIMlCA S.A.
    Inventors: Peng WANG, Pixu LI, Qiang WEI, Yuanhua LIU
  • Processes to produce brivaracetam
    Patent number: 10221134
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: March 5, 2019
    Assignee: Esteve Quimica S.A.
    Inventors: Peng Wang, Pixu Li, Qiang Wei, Yuanhua Liu
  • PROCESSES TO PRODUCE BRIVARACETAM
    Publication number: 20180155284
    Abstract: The present invention provides a scalable synthesis of enantiomerically pure brivaracetam, and related derivatives.
    Type: Application
    Filed: May 24, 2016
    Publication date: June 7, 2018
    Inventors: Peng WANG, Pixu LI, Qiang WEI, Yuanhua LIU