Patents by Inventor DONGHUI BAO

DONGHUI BAO 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).

  • FULL-FACE SHAFT TUNNEL BORING MACHINE SYSTEM
    Publication number: 20240068308
    Abstract: A full-face shaft tunnel boring machine system includes a tunnel boring machine cutterhead device for tunneling downwards in a shaft; a full-hydraulic formwork device for supporting and walling in a wellbore; and an upper muck-discharge system for vertically conveying rock mucks generated by tunneling. The tunnel boring machine cutterhead device comprises a vertical guide frame, a cutter-expanded boring head and an advanced cutterhead that are fixedly connected in a vertical order from top to bottom so as to form an integrated structure. The vertical guide frame is a hollow cylindrical structure and driven to rotate around an axis of the vertical guide frame by a power mechanism, and an outer wall of the vertical guide frame is provided with multiple sets of first guide rollers.
    Type: Application
    Filed: August 25, 2023
    Publication date: February 29, 2024
    Applicants: HEFEI DESIGN & RESEARCH INSTITUTE OF COAL INDUSTRY CO., LTD, UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, CHINA COAL NO.3 CONSTRUCTION CORPORATION (GROUP) LTD, ANSTEEL GROUP MINING CORPORTION LIMITED
    Inventors: Huidong XU, Renshu YANG, Bin XU, Ning LIU, Guang LI, Yong ZHANG, Jinghui YE, Lin LV, Fei MA, Donghui MAN, Tingting BAO, Zheng LI, Yingcan LIU, Guozheng ZHOU, Bo DING
  • Nucleoside analogs
    Patent number: 8551973
    Abstract: A purified compound having activity against hepatitis C virus is disclosed.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: October 8, 2013
    Assignee: Gilead Pharmasset LLC
    Inventors: Donghui Bao, Wonsuk Chang, Dhanapalan Nagarathnam, Michael Joseph Sofia
  • NUCLEOSIDE ANALOGS
    Publication number: 20100286083
    Abstract: A purified compound having activity against hepatitis C virus is disclosed.
    Type: Application
    Filed: December 23, 2009
    Publication date: November 11, 2010
    Applicant: PHARMASSET, INC.
    Inventors: DONGHUI BAO, Wonsuk Chang, Dhanapalan Nagarathnam, Michael Joseph Sofia