Patents by Inventor Xufeng Cao

Xufeng Cao 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).

  • Publication number: 20240141785
    Abstract: A zonal bolt-grouting support device and method for cataclastic rock mass large deformation of a high-stress tunnel, the method includes: drill holes in surrounding rock of a tunnel against a tunnel face after rock mass excavation, install high-strength prestressed anchor members, apply a preload to anchor bolts when expansion anchoring agent is fully expanded and has a certain strength, and zonally grout the surrounding rock after stress adjustment. The high-strength prestressed anchor member comprises an anchor bolt, an expansion anchor agent, a decoupling material, a grouting device, a reverse anti-skid device, etc. The grouting device consists of a shallow grouting steel pipe, a deep grouting steel pipe and a grouting stop valve, and the grouting steel pipe is arranged side by side with the anchor bolt in a drill hole. The technical proposal of the invention effectively inhibits the large deformation of a cataclastic rock mass.
    Type: Application
    Filed: October 30, 2023
    Publication date: May 2, 2024
    Inventors: Guojin Zhu, Pengzhi Pan, Xuexing Cao, Yangyi Zhou, Zhaofeng Wang, Shijie Yang, Xufeng Liu, Huyue Zhan, Fengqiong Li
  • Publication number: 20220348558
    Abstract: Compounds of Formula I and Formula II: pharmaceutical compositions containing them, and use of the compounds as active ingredients to treat infection with alphavirus.
    Type: Application
    Filed: September 4, 2020
    Publication date: November 3, 2022
    Inventors: Jennifer Elizabeth Golden, Xufeng Cao, Donghoon Chung, Colleen Beth Jonsson, Xiaoyu Li, Michael Ryan, Jongwoo Son
  • Publication number: 20220056001
    Abstract: The invention described herein generally relates to novel therapeutic compounds, and in particular to carbonic anhydrase inhibitors as a narrow spectrum antibiotics against drug resistant bacteria and methods for treating those infection diseases in mammals using the described carbonic anhydrase inhibitors or a pharmaceutical formulation thereof.
    Type: Application
    Filed: December 18, 2019
    Publication date: February 24, 2022
    Applicant: Purdue Research Foundation
    Inventors: Daniel P FLAHERTY, Mohamed Seleem, Jatinder Kaur, Xufeng Cao
  • Patent number: 8614251
    Abstract: The invention provides a new crystalline form of agomelatine, preparation and use thereof. The X-ray powder diffraction diagram of the agomelatine crystalline form shows main peaks at the diffraction angles 2? 11.13°, 11.82°, 17.49°, 18.29°, 19.48°, 19.72°, 20.50°, 21.76°, 22.54°, 22.97°, 24.56°, 25.36°, 27.16° and 31.93°. Said new crystalline form is characterized by high purity, stability and good reproducibility, and thus is advantageous for the pharmaceutical formulation. In addition, the stability and solubility of said crystalline form are also superior over the several existing crystalline forms.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 24, 2013
    Assignee: Les Laboratories Servier
    Inventors: Hanbin Shan, Peng Zhang, Zhedong Yuan, Xudong Jiang, Yu Huang, Hubo Wang, Xufeng Cao, Xingdong Cheng, Xiong Yu
  • Patent number: 8524949
    Abstract: The present invention relates to a complex of agomelatine and to preparation thereof. The hydrogen halide complex of agomelatine obtained through the present method is more soluble, more stable, and of higher purity than agomelatine itself, making it more suitable to be used in pharmaceutical preparation. Using this method, product of high purity can be obtained through a simple process, without having to incur further complicated steps.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 3, 2013
    Assignee: Les Laboratories Servier
    Inventors: Hanbin Shan, Peng Zhang, Zhedong Yuan, Xudong Jiang, Yu Huang, Hubo Wang, Xufeng Cao, Xingdong Cheng, Hongjuan Pan, Xiong Yu
  • Publication number: 20120004313
    Abstract: The invention provides a new crystalline form of agomelatine, preparation and use thereof. The X-ray powder diffraction diagram of the agomelatine crystalline form shows main peaks at the diffraction angles 2? 11.13°, 11.82°, 17.49°, 18.29°, 19.48°, 19.72°, 20.50°, 21.76°, 22.54°, 22.97°, 24.56°, 25.36°, 27.16° and 31.93°. Said new crystalline form is characterized by high purity, stability and good reproducibility, and thus is advantageous for the pharmaceutical formulation. In addition, the stability and solubility of said crystalline form are also superior over the several existing crystalline forms.
    Type: Application
    Filed: March 9, 2010
    Publication date: January 5, 2012
    Inventors: Hanbin Shan, Peng Zhang, Zhedong Yuan, Xudong Jiang, Yu Huang, Hubo Wang, Xufeng Cao, Xingdong Cheng, Xiong Yu
  • Publication number: 20110313198
    Abstract: The present invention relates to a complex of agomelatine and to preparation thereof. The hydrogen halide complex of agomelatine obtained through the present method is more soluble, more stable, and of higher purity than agomelatine itself, making it more suitable to be used in pharmaceutical preparation. Using this method, product of high purity can be obtained through a simple process, without having to incur further complicated steps.
    Type: Application
    Filed: February 26, 2010
    Publication date: December 22, 2011
    Inventors: Peng Zhang, Hanbin Shan, Zhedong Yuan, Xudong Jiang, Yu Huang, Hubo Wang, Xufeng Cao, Xingdong Cheng, Hongjuan Pan, Xiong Yu