Patents by Inventor Mingtong HUANG

Mingtong HUANG 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: 11358136
    Abstract: An amphoteric dissociation ion exchange separation medium, the surface of which is an amphoteric dissociation covalently-modified layer. When an environmental pH value is lower than the isoelectric point, pIm, of the covalently-modified layer, the type of net charges on the surface of the covalently-modified layer is positive and the separation medium has the properties of an anion exchanger; when the environmental pH value is higher than the pIm, the type of net charges on the covalently-modified layer surface is negative and the separation medium has the properties of a cation exchanger. The separation medium has the properties of an anion exchanger and a cation exchanger at both sides of the pIm, respectively. The pH of an eluent can be adjusted to allow the separation medium surface and the target substance to have the same type of net charges, so that the target substance can be released by electrostatic repulsion.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: June 14, 2022
    Assignee: CHONGQING BOLANYING (BLY) BIOTECHNOLOGY CO., LTD.
    Inventors: Fei Liao, Gaobo Long, Yanling Xie, Mingtong Huang, Wanjun Xie
  • Publication number: 20200376480
    Abstract: An amphoteric dissociation ion exchange separation medium, the surface of which is an amphoteric dissociationcovalently-modified layer. When an environmental pH value is lower than the isoelectric point, pIm, of the covalently-modified layer, the type of net charges on the surface of the covalently-modified layer is positive and the separation medium has the properties of an anion exchanger; when the environmental pH value is higher than the pIm, the type of net charges on the covalently-modified layer surface is negative and the separation medium has the properties of acation exchanger. The separation medium has the properties of an anion exchanger and a cation exchanger at both sides of the pIm, respectively. The pH of an eluent can be adjusted to allow the separation medium surface and the target substance to have the same type of net charges, so that the target substance can be released by electrostatic repulsion.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 3, 2020
    Inventors: Fei LIAO, Gaobo LONG, Yanling XIE, Mingtong HUANG, Wanjun XIE
  • Publication number: 20190291095
    Abstract: An amphoteric dissociation ion exchange separation medium, the surface of which is an amphoteric dissociation covalently-modified layer. When an environmental pH value is lower than the isoelectric point, pIm, of the covalently-modified layer, the type of net charges on the surface of the covalently-modified layer is positive and the separation medium has the properties of an anion exchanger; when the environmental pH value is higher than the pIm, the type of net charges on the covalently-modified layer surface is negative and the separation medium has the properties of a cation exchanger. The separation medium has the properties of an anion exchanger and a cation exchanger at both sides of the pIm, respectively. The pH of an eluent can be adjusted to allow the separation medium surface and the target substance to have the same type of net charges, so that the target substance can be released by electrostatic repulsion.
    Type: Application
    Filed: June 9, 2019
    Publication date: September 26, 2019
    Inventors: Fei LIAO, Gaobo LONG, Yanling XIE, Mingtong HUANG, Wanjun XIE