Patents by Inventor Guangqiang Xia

Guangqiang Xia 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).

  • Preparation method of water-insoluble dietary fiber
    Patent number: 12233098
    Abstract: A preparation method of Antrodia cinnamomea water-insoluble dietary fiber. After ethanol and water extraction, Antrodia cinnamomea wastes are dried and superfine-comminuted to obtain Antrodia cinnamomea waste powder. The waste powder treated with NaOH solution containing NaBH4 is extracted it twice to obtain two extracts. The two extracts are combined and an appropriate amount of glacial acetic acid are added for neutralization. The extracts are centrifugalized and precipitate is collected. After washing the precipitate with ultrapure water, the precipitate is dissolved with LiCl-DMSO. The precipitate that is insoluble in the LiCl-DMSO solution is dialyzed and freeze-dried to obtain the water-insoluble dietary fiber component ACA-IDK of Antrodia cinnamomea. The LiCl-DMSO solution is subjected to ethanol/DMSO fractional precipitation, and then the precipitate is collected and dialyzed. The water-insoluble dietary fiber component ACA-DK of Antrodia cinnamomea is obtained after freeze-drying.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: February 25, 2025
    Assignee: UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY
    Inventors: Lianzhong Ai, Yongjun Xia, Peng Meng, Hui Zhang, Guangqiang Wang, Zhiqiang Xiong, Xin Song
  • Optically pure dihydropyrimidine compounds and their uses for the preparation of a medicament for treatment and prevention of viral diseases
    Patent number: 8329902
    Abstract: The present invention relates to an optically pure compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof, a process for preparing the optically pure compound of formula (I), and use of the optically pure compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof as a medicament, in particular as a medicament for the treatment and prevention of type B hepatitis.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: December 11, 2012
    Assignee: Beijing Molecule Science And Technology Co., Ltd.
    Inventors: Song Li, Guangqiang Xia, Guoming Zhao, Lili Wang, Zhibing Zheng, Yunde Xie, Wu Zhong, Junhai Xiao, Xingzhou Li, Hao Cui
  • Dihydropyrimidine compounds and their uses in preparation of medicaments for treating and preventing antiviral diseases
    Patent number: 8168642
    Abstract: The present invention relates to a compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof, to a process for preparing the compound of formula (I), and to use of the compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof as a medicament, in particular as a medicament for the treatment and prevention of type B hepatitis.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: May 1, 2012
    Assignee: Beijing Molecule Science and Technology Co., Ltd.
    Inventors: Song Li, Guoming Zhao, Guangqiang Xia, Lili Wang, Zhibing Zheng, Yunde Xie, Wu Zhong, Junhai Xiao, Xingzhou Li, Hao Cui
  • Dihydropyrimidine Compounds and Their Uses in Preparation of Medicaments for Treating and Preventing Antiviral Diseases
    Publication number: 20100087448
    Abstract: The present invention relates to a compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof, to a process for preparing the compound of formula (I), and to use of the compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof as a medicament, in particular as a medicament for the treatment and prevention of type B hepatitis.
    Type: Application
    Filed: July 9, 2007
    Publication date: April 8, 2010
    Inventors: Song Li, Guoming Zhao, Guangqiang Xia, Lili Wang, Zhibing Zheng, Yunde Xie, Wu Zhong, Junhai Xiao, Xingzhou Li, Hao Cui
  • Optically Pure Dihydropyrimidine Compounds and Their Uses for the Preparation of a Medicament for Treatment and Prevention of Viral Diseases
    Publication number: 20100004268
    Abstract: The present invention relates to an optically pure compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof, a process for preparing the optically pure compound of formula (I), and use of the optically pure compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof as a medicament, in particular as a medicament for the treatment and prevention of type B hepatitis.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 7, 2010
    Inventors: Song Li, Guangqiang Xia, Guoming Zhao, Lili Wang, Zhibing Zheng, Yunde Xie, Wu Zhong, Junhai Xiao, Xingzhou Li, Hao Cui