Patents by Inventor Duqiang Luo

Duqiang Luo 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).

  • Protein tyrosine phosphatase inhibitor, preparation method and uses thereof
    Patent number: 9849118
    Abstract: Disclosed in the present invention is a protein tyrosine phosphatase inhibitor. The preparation method therefor is: extracting the crude product from the Isaria Fumosorosea Wize solid or liquid fermentation broth using ethyl acetate, ethanol, methanol, or a mixed solvent of chloroform and methanol; separating the obtained extract using column chromatography on silica gel; and obtaining the target product. The inhibitor can be used to prepare pharmaceutical compositions for treating and preventing diabetes, obesity and cancers.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: December 26, 2017
    Assignee: Heibei University
    Inventors: Duqiang Luo, Jun Zhang, Zhiqin Liu
  • Protein tyrosine phosphatase inhibitor, preparation method and uses thereof
    Patent number: 9827232
    Abstract: Disclosed in the present invention is a protein tyrosine phosphatase inhibitor. The preparation method therefor is: extracting the crude product from the Isaria Fumosorosea Wize solid or liquid fermentation broth using ethyl acetate, ethanol, methanol, or a mixed solvent of chloroform and methanol; separating the obtained extract using column chromatography on silica gel; and obtaining the target product. The inhibitor can be used to prepare pharmaceutical compositions for treating and preventing diabetes, obesity and cancers.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: November 28, 2017
    Assignee: Hebei University
    Inventors: Duqiang Luo, Jun Zhang, Zhiqin Liu
  • PROTEIN TYROSINE PHOSPHATASE INHIBITOR, PREPARATION METHOD AND USES THEREOF
    Publication number: 20160310475
    Abstract: Disclosed in the present invention is a protein tyrosine phosphatase inhibitor. The preparation method therefor is: extracting the crude product from the Isaria Fumosorosea Wize solid or liquid fermentation broth using ethyl acetate, ethanol, methanol, or a mixed solvent of chloroform and methanol; separating the obtained extract using column chromatography on silica gel; and obtaining the target product. The inhibitor can be used to prepare pharmaceutical compositions for treating and preventing diabetes, obesity and cancers.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Inventors: Duqiang Luo, Jun Zhang, Zhiqin Liu
  • PROTEIN TYROSINE PHOSPHATASE INHIBITOR, PREPARATION METHOD AND USES THEREOF
    Publication number: 20150148545
    Abstract: Disclosed in the present invention is a protein tyrosine phosphatase inhibitor. The preparation method therefor is: extracting the crude product from the Isaria Fumosorosea Wize solid or liquid fermentation broth using ethyl acetate, ethanol, methanol, or a mixed solvent of chloroform and methanol; separating the obtained extract using column chromatography on silica gel; and obtaining the target product. The inhibitor can be used to prepare pharmaceutical compositions for treating and preventing diabetes, obesity and cancers.
    Type: Application
    Filed: May 7, 2013
    Publication date: May 28, 2015
    Inventors: Duqiang Luo, Jun Zhang, Zhiqin Liu