Patents by Inventor Xi DU

Xi DU 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).

  • Publication number: 20200316531
    Abstract: An industrial wastewater filtration membrane and method for manufacture is disclosed herein. The membrane has three layers: a support layer of nonwoven fabric such as PET, a polysulfone nanofiber filtering membrane layer, and a nanoporous polyamide active separating layer. The polysulfone layer is electrospun onto the support layer. The polyamide layer is electrosprayed onto the polysulfone layer. The resulting membrane has a pure water flux rate of at 0.48 MPa that is between 40-200 liters per square meter per hour, a rejection rate of sodium chloride of 10-85% with inlet sodium chloride concentration of 2000 ppm, and a rejection rate of magnesium sulphate of 80-97% with inlet magnesium sulphate concentration of 2000 ppm.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 8, 2020
    Inventors: Yugao ZHANG, Xi DU, Yan KE, Xiaoqian ZHU, Siyue LI, Yingshun LI
  • Patent number: D986854
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: May 23, 2023
    Assignee: Shenzhen Zhiqi Technology Co., Ltd.
    Inventor: Xi Du
  • Patent number: D1002573
    Type: Grant
    Filed: January 31, 2021
    Date of Patent: October 24, 2023
    Inventor: Xi Du