Patents by Inventor Yangyang Zeng

Yangyang Zeng 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).

  • Method for determining weight-average molecular weight and content of soluble salt of acidic carbohydrates
    Patent number: 11366086
    Abstract: The invention belongs to the technical field of natural medicinal chemistry and quality control thereof, and relates to a method for determining the weight average molecular weight and the purity of a soluble salt of an acidic saccharide. The method comprises using metal ion content in the soluble salt of an acidic saccharide to correct the weight average molecular weight and the content of the of acid saccharide obtained by the combined use of the molecular sieve chromatography and a multi-angle laser scattering detector SEC-MALS. The method of the present invention can be used to more quickly and accurately determine the weight average molecular weight and content of acidic saccharide soluble salts.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: June 21, 2022
    Assignees: SHANGHAI GREEN VALLEY PHARMACEUTICAL CO., LTD., SOOCHOW UNIVERSITY
    Inventors: Zhenqing Zhang, Yangyang Zeng
  • METHOD FOR DETERMINING WEIGHT-AVERAGE MOLECULAR WEIGHT AND CONTENT OF SOLUBLE SALT OF ACIDIC CARBOHYDRATES
    Publication number: 20210010984
    Abstract: The invention belongs to the technical field of natural medicinal chemistry and quality control thereof, and relates to a method for determining the weight average molecular weight and the purity of a soluble salt of an acidic saccharide. The method comprises using metal ion content in the soluble salt of an acidic saccharide to correct the weight average molecular weight and the content of the of acid saccharide obtained by the combined use of the molecular sieve chromatography and a multi-angle laser scattering detector SEC-MALS. The method of the present invention can be used to more quickly and accurately determine the weight average molecular weight and content of acidic saccharide soluble salts.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 14, 2021
    Inventors: Zhenqing Zhang, Yangyang Zeng