Patents by Inventor Xueyu Xu

Xueyu 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).

  • Patent number: 11130766
    Abstract: The present invention discloses deuterated thienopiperidine derivatives, a manufacturing method and an application thereof. The deuterated thienopiperidine derivatives in the present invention are of a structure of the following formula (I). The present invention also comprises the application of the deuterated thienopiperidine derivatives as a drug for treating and preventing cardiovascular and cerebrovascular diseases.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 28, 2021
    Assignee: JIANGSU TASLY DIYI PHARMACEUTICAL CO., LTD.
    Inventors: Guocheng Wang, Jun Zhong, Xueyu Xu
  • Patent number: 10829497
    Abstract: Disclosed are a crystal form II of a thienopyridine derivative bisulfate and a preparation method therefor and the use thereof. The X-ray powder diffraction pattern of the crystal form II represented by the 2? diffraction angle exhibits characteristic diffraction peaks at 12.86°, 13.58°, 15.58°, 17.64°, 18.42°, 21.56°, 22.90°, 23.70° and 24.64°. The crystal form can be used as an active ingredient for preparing a pharmaceutical composition for preventing and treating diseases caused by thrombi. Compared with the original crystal form, the crystal form II of the invention has a better stability, with denser bulk solid particles, and is less susceptible to static electricity, and has better fluidity and compressibility, and when used as an active ingredient for preparing a pharmaceutical composition, the pharmaceutical preparation prepared with the crystal form II has a stronger stability.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 10, 2020
    Assignee: ZHONGRONG KAITE (BEIJING) BIOTECHNOLOGY CO., LTD.
    Inventors: Jingkai Gu, Xueyu Xu, Hao Wang, Xue Zhao
  • Publication number: 20200207781
    Abstract: Disclosed are a crystal form II of a thienopyridine derivative bisulfate and a preparation method therefor and the use thereof. The X-ray powder diffraction pattern of the crystal form II represented by the 2? diffraction angle exhibits characteristic diffraction peaks at 12.86°, 13.58°, 15.58°, 17.64°, 18.42°, 21.56°, 22.90°, 23.70° and 24.64°. The crystal form can be used as an active ingredient for preparing a pharmaceutical composition for preventing and treating diseases caused by thrombi. Compared with the original crystal form, the crystal form II of the invention has a better stability, with denser bulk solid particles, and is less susceptible to static electricity, and has better fluidity and compressibility, and when used as an active ingredient for preparing a pharmaceutical composition, the pharmaceutical preparation prepared with the crystal form II has a stronger stability.
    Type: Application
    Filed: June 25, 2018
    Publication date: July 2, 2020
    Applicant: ZHONGRONG KAITE (BEIJING) BIOTECHNOLOGY CO., LTD.
    Inventors: JINGKAI GU, XUEYU XU, HAO WANG, XUE ZHAO
  • Publication number: 20180179222
    Abstract: The present invention discloses deuterated thienopiperidine derivatives, a manufacturing method and an application thereof. The deuterated thienopiperidine derivatives in the present invention are of a structure of the following formula (I). The present invention also comprises the application of the deuterated thienopiperidine derivatives as a drug for treating and preventing cardiovascular and cerebrovascular diseases.
    Type: Application
    Filed: June 21, 2016
    Publication date: June 28, 2018
    Inventors: Guocheng WANG, Jun ZHONG, Xueyu XU
  • Patent number: 8431577
    Abstract: The present invention discloses a crystalline form of S-zopiclone (Formula I) having a powder X-Ray diffraction spectrum excited by Cu-Ka radiation with characteristic peaks expressed in terms of 2? at about 11.08°, about 12.38°, about 15.86°, about 17.88°, about 19. 98° and about 20.58°; a DSC thermogram with a peak at about 207.7° C. and an infrared absorption spectrum (IR) with characteristic peaks at about 3078 cm?1, about 2942˜2838 cm?1, about 2790 cm?1, about 1716 cm?1, about 1463 cm?1, about 1372 cm?1 and about 757 cm?1. The present invention also discloses a method for preparing the crystalline form of eszopiclone, its pharmaceutical composition and its use in preparing a medicament for treating sleep disorders.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 30, 2013
    Assignee: Tianjin Tasly Group Co., Ltd.
    Inventors: Guocheng Wang, Xueyu Xu
  • Publication number: 20110098307
    Abstract: The present invention discloses a crystalline form of S-zopiclone having a powder X-Ray diffraction spectrum excited by Cu-Ka radiation with characteristic peaks expressed in terms of 28 at about 11.08°, about 12.38°, about 15.86°, about 17.88°, about 19.98° and about 20.58°; a DSC thermogram with a peak at about 207.7° C. and an infrared absorption spectrum (IR) with characteristic peaks at about 3078 cm?1, about 2942-2838 cm?1, about 2790 cm?1, about 1716 cm?1, about 1463 cm?1, about 1372 cm?1 and about 757 cm?1. The present invention also discloses a method for preparing the crystalline form of eszopiclone, its pharmaceutical composition and its use in preparing a medicament for treating sleep disorders.
    Type: Application
    Filed: April 17, 2009
    Publication date: April 28, 2011
    Inventors: Guocheng Wang, Xueyu Xu