Patents by Inventor Yanyuan ZHANG

Yanyuan 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).

  • Pramipexole hydrochloride oral liquid
    Patent number: 11801236
    Abstract: The present invention provides a method for improving the stability of pramipexole or its salt preparation, and further provides a pramipexole hydrochloride oral liquid with excellent stability and oral absorption effect. The pramipexole hydrochloride oral liquid of the present invention is prepared through a simple process, and shows bioequivalence with the tablet containing pramipexole hydrochloride. The invention perfectly realizes multi-dose administration of pramipexole hydrochloride and improves the compliance and accessibility of medication for patients.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: October 31, 2023
    Assignees: CHANGZHOU NO.4 PHARMACEUTICAL FACTORY CO. LTD, BEIJING DO-PHARMA TECH CO. LTD
    Inventors: Xinhua Fan, Yanyuan Zhang, Yun He, Pengfei Li, Xiang Zhang, Longhao Wu, Peng Peng, Sujing Zhuang, Li Xiao, Yongrui Tu
  • PRAMIPEXOLE HYDROCHLORIDE ORAL LIQUID
    Publication number: 20230061159
    Abstract: The present invention provides a method for improving the stability of pramipexole or its salt preparation, and further provides a pramipexole hydrochloride oral liquid with excellent stability and oral absorption effect. The pramipexole hydrochloride oral liquid of the present invention is prepared through a simple process, and shows bioequivalence with the tablet containing pramipexole hydrochloride. The invention perfectly realizes multi-dose administration of pramipexole hydrochloride and improves the compliance and accessibility of medication for patients.
    Type: Application
    Filed: January 8, 2021
    Publication date: March 2, 2023
    Inventors: Xinhua FAN, Yanyuan ZHANG, Yun HE, Pengfei LI, Xiang ZHANG, Longhao WU, Peng PENG, Sujing ZHUANG, Li XIAO, Yongrui TU