Patents by Inventor Qinghong Xu

Qinghong Xu 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).

  • Protecting trolley and construction method of rock burst prewarning protection system in non-contact tunnel construction
    Patent number: 11920474
    Abstract: Provided are a protecting trolley and a construction method of rock burst prewarning protection system in non-contact tunnel construction. The protecting trolley includes a framework, a walking assembly, a rockfall buffering assembly, a spraying assembly and a rock burst prewarning system. The rockfall buffering assembly includes an arch frame in a fixed connection with the framework and a protecting net fixed on the arch frame. The spraying assembly includes a track car in connection with the rockfall buffering assembly and a spraying hose fixed on the track car, and the spraying hose sprays towards the surrounding rock. The rock burst prewarning assembly includes a thermosensitive infrared sensor used for detecting the temperature of the surrounding rock and a highly sensitive laser sensor used for detecting the deformation of the surrounding rock.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: March 5, 2024
    Assignees: CHINA RAILWAY 16TH BUREAU GROUP CO., LTD., CHINA RAILWAY 16TH BUREAU GROUP BEIJING JIANGONG MACHINERY CO., LTD.
    Inventors: Dong Ma, Wuxian Wang, Yi Sun, Qinghong Wu, Binhua Wu, Huaxuan Xu
  • Catalyst for polymerization of olefins comprising thienyl-substituted silanes
    Patent number: 8541332
    Abstract: Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: September 24, 2013
    Assignee: PetroChina Company Limited
    Inventors: Zhifei Li, Kuilong Tan, Hao Wang, Jianjun Yi, Qinghong Xu, Weisong Cui, Wei Bai, Xinyuan Liu, Pu Xu, Wanqing Ju
  • CATALYST FOR POLYMERIZATION OF OLEFINS COMPRISING THIENYL-SUBSTITUTED SILANES
    Publication number: 20130131292
    Abstract: Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has very high degree of isotacticity, and the yield is high.
    Type: Application
    Filed: June 3, 2011
    Publication date: May 23, 2013
    Applicant: PetroChina Company Limited
    Inventors: Zhifei Li, Kuilong Tan, Hao Wang, Jianjun Yi, Qinghong Xu, Weisong Cui, Wei Bai, Xinyuan Liu, Pu Xu, Wanqing Ju
  • Sulfurization of phosphorus-containing compounds
    Patent number: 5852168
    Abstract: The present invention provides a method for sulfurizing a phosphorus-containing compound, such as a trivalent phosphorus compound, using a disulfide-containing five-membered heterocycle.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: December 22, 1998
    Assignees: Regents of the University of Minesota, The Board of Supervisors of LA State University
    Inventors: George Barany, Robert P. Hammer, Karin Musier-Forsyth, Qinghong Xu, Lin Chen