Patents by Inventor Xijuan Wang

Xijuan Wang 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: 10723701
    Abstract: The present application provides a quinolyl-substituted carboxylic acid compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, as well as a method for preparing the compound, a use of the compound, and a formulation containing the quinolyl-substituted carboxylic acid compound or the pharmaceutically acceptable salt thereof. This type of compounds are inhibitors for AXL and/or VEGFR2 protein kinase, and can be used to treat diseases caused by abnormality of the two protein kinases, such as, tumor, etc.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 28, 2020
    Assignee: BEIJING KONRUNS PHARMACEUTICAL CO., LTD.
    Inventors: Zhiqiang Zhang, Xijuan Wang, Xuehui Zhang, Junxia Qiu, Jiehe Yang, Xiaokai Zhang, Peng Yao
  • Publication number: 20190256470
    Abstract: The present application provides a quinolyl-substituted carboxylic acid compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, as well as a method for preparing the compound, a use of the compound, and a formulation containing the quinolyl-substituted carboxylic acid compound or the pharmaceutically acceptable salt thereof. This type of compounds are inhibitors for AXL and/or VEGFR2 protein kinase, and can be used to treat diseases caused by abnormality of the two protein kinases, such as, tumor, etc.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 22, 2019
    Applicant: BEIJING KONRUNS PHARMACEUTICAL CO., LTD.
    Inventors: Zhiqiang ZHANG, Xijuan WANG, Xuehui ZHANG, Junxia QIU, Jiehe YANG, Xiaokai ZHANG, Peng YAO
  • Patent number: 8476054
    Abstract: A thrombin-like enzyme isolated from Agkistrodon acutus venom, comprising an alpha subunit having the sequence of SEQ ID No. 1 and a beta subunit having the sequence of SEQ ID No. 2, which are linked by seven disulfide bonds, is provided. The hemocoagulase of Agkistrodon acutus in the present invention is a serine proteinase having a molecular weight of 29.3-29.5 kD and an isoelectric point of 5.5, and is able to hydrolyze the alpha chain of human fibrinogen. The invention also provides methods of purifying the thrombin-like enzyme from snake venom, which comprise removing insoluble substance by pretreatment, conducting twice of anion-exchange column chromatography, collecting active eluting peak, dialyzing, ultra-filtrating and desalinating so as to obtain a snake venom thrombin-like enzyme.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: July 2, 2013
    Assignee: Konruns Pharmaceutical Co., Ltd.
    Inventors: Di Sun, Xijuan Wang
  • Publication number: 20110263000
    Abstract: A thrombin-like enzyme isolated from Agkistrodon acutus venom, comprising an alpha subunit having the sequence of SEQ ID No. 1 and a beta subunit having the sequence of SEQ ID No. 2, which are linked by seven disulfide bonds, is provided. The hemocoagulase of Agkistrodon acutus in the present invention is a serine proteinase having a molecular weight of 29.3-29.5 kD and an isoelectric point of 5.5, and is able to hydrolyze the alpha chain of human fibrinogen. The invention also provides methods of purifying the thrombin-like enzyme from snake venom, which comprise removing insoluble substance by pretreatment, conducting twice of anion-exchange column chromatography, collecting active eluting peak, dialyzing, ultra-filtrating and desalinating so as to obtain a snake venom thrombin-like enzyme; and the enzyme has a specific activity of no less than 180 u/mg protein, a HPLC purity of more than 95% and a yield of 0.7%-0.8% based on the weight of the snake venom raw material.
    Type: Application
    Filed: March 4, 2009
    Publication date: October 27, 2011
    Inventors: Di Sun, Xijuan Wang
  • Patent number: 8017750
    Abstract: The present invention provides a venene haemocoagulase gene and its expression for the functional protein. The haemocoagulase gene of the present invention has a nucleotide sequence shown by the sequence list SEQ ID NO: 1 or the mutated nucleotide sequence formed by replacement, depletion, or addition of one or more nucleotide based on the said nucleotide sequence with an equivalent function. The said haemocoagulase has amino acid sequence shown by SEQ ID NO: 2. Haemocoagulase of the present invention has an obvious hemostatic effect, a broad effective dose range, safe and reliable application, which creates good conditions for the development of genetic engineering products of recombinant haemocoagulase in the future.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: September 13, 2011
    Assignee: Konruns Pharmaceutical Co., Ltd
    Inventor: Xijuan Wang
  • Patent number: 7993893
    Abstract: The present invention provides a venene haemocoagulase gene and its expression for the functional protein. The haemocoagulase gene of the present invention has a nucleotide sequence shown by the sequence list SEQ ID NO: 1 or the mutated nucleotide sequence formed by replacement, depletion, or addition of one or more nucleotide based on the said nucleotide sequence with an equivalent function. The said haemocoagulase has amino acid sequence shown by SEQ ID NO: 2. Haemocoagulase of the present invention has an obvious hemostatic effect, a broad effective dose range, safe and reliable application, which creates good conditions for the development of genetic engineering products of recombinant haemocoagulase in the future.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: August 9, 2011
    Assignee: Konruns Pharmaceutical Co., Ltd
    Inventor: Xijuan Wang
  • Publication number: 20110071283
    Abstract: The present invention provides a venene haemocoagulase gene and its expression for the functional protein. The haemocoagulase gene of the present invention has a nucleotide sequence shown by the sequence list SEQ ID NO: 1 or the mutated nucleotide sequence formed by replacement, depletion, or addition of one or more nucleotide based on the said nucleotide sequence with an equivalent function. The said haemocoagulase has amino acid sequence shown by SEQ ID NO: 2. Haemocoagulase of the present invention has an obvious hemostatic effect, a broad effective dose range, safe and reliable application, which creates good conditions for the development of genetic engineering products of recombinant haemocoagulase in the future.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 24, 2011
    Applicant: KONRUNS PHARMACEUTICAL CO., LTD
    Inventor: Xijuan WANG
  • Publication number: 20100120120
    Abstract: The present invention provides a venene haemocoagulase gene and its expression for the functional protein. The haemocoagulase gene of the present invention has a nucleotide sequence shown by the sequence list SEQ ID NO: 1 or the mutated nucleotide sequence formed by replacement, depletion, or addition of one or more nucleotide based on the said nucleotide sequence with an equivalent function. The said haemocoagulase has amino acid sequence shown by SEQ ID NO: 2. Haemocoagulase of the present invention has an obvious hemostatic effect, a broad effective dose range, safe and reliable application, which creates good conditions for the development of genetic engineering products of recombinant haemocoagulase in the future.
    Type: Application
    Filed: December 8, 2006
    Publication date: May 13, 2010
    Applicant: KONRUNS PHARMACEUTICAL CO., LTD
    Inventor: Xijuan Wang