Patents by Inventor Guoqiang Hu

Guoqiang Hu 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).

  • Drill string valve assembly
    Patent number: 7347286
    Abstract: A drill string valve assembly includes a tubular valve body, including an outer surface and an inner bore for housing a valve mechanism to control fluid flow through the bore; and an axial load support releasably securable to the outer surface of the valve body, the axial load support including an upper releasable load bearing connection to the tubular body and a lower releasable load bearing connection to the tubular valve body.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 25, 2008
    Assignee: Tesco Corporation
    Inventor: Guoqiang Hu
  • DRILL STRING VALVE ASSEMBLY
    Publication number: 20050236191
    Abstract: A drill string valve assembly includes a tubular valve body, including an outer surface and an inner bore for housing a valve mechanism to control fluid flow through the bore; and an axial load support releasably securable to the outer surface of the valve body, the axial load support including an upper releasable load bearing connection to the tubular body and a lower releasable load bearing connection to the tubular valve body.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Applicant: TESCO CORPORATION
    Inventor: Guoqiang Hu