Patents by Inventor Fei Dang

Fei Dang 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 simultaneous determination of particle size distribution and concentration of nanoparticulate mercury in natural soils
    Patent number: 11830713
    Abstract: Disclosed is a method for simultaneous determination of particle size distribution, concentrations of nanoparticulate mercury (Hg-NPs) in natural soils. The method uses sodium pyrophosphate as the extractant, and allows quick extraction of Hg-NPs in the soil without dissolution or aggregation. In combination with spICP-MS determination, the method makes it possible to simultaneously determine the particle size distribution and concentration of Hg-NPs in the complex soil matrix, with accurate determination results.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: November 28, 2023
    Assignee: INSTITUTE OF SOIL SCIENCE, CHINESE ACADEMY OF SCIENCES
    Inventors: Fei Dang, Yujun Wang, Weiping Cai
  • METHOD FOR SIMULTANEOUS DETERMINATION OF PARTICLE SIZE DISTRIBUTION AND CONCENTRATION OF NANOPARTICULATE MERCURY IN NATURAL SOILS
    Publication number: 20230095510
    Abstract: Disclosed is a method for simultaneous determination of particle size distribution, concentrations of nanoparticulate mercury (Hg-NPs) in natural soils. The method uses sodium pyrophosphate as the extractant, and allows quick extraction of Hg-NPs in the soil without dissolution or aggregation. In combination with spICP-MS determination, the method makes it possible to simultaneously determine the particle size distribution and concentration of Hg-NPs in the complex soil matrix, with accurate determination results.
    Type: Application
    Filed: May 16, 2022
    Publication date: March 30, 2023
    Inventors: Fei Dang, Yujun Wang, Weiping Cai