Patents by Inventor Khaoula KHALESS

Khaoula KHALESS 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 MANUFACTURING ZINC PHOSPHATE (ZN3(PO4)2)
    Publication number: 20240327219
    Abstract: The present disclosure relates to a method for producing zinc phosphate with the application of ultrasound having a frequency greater than 100 KHZ.
    Type: Application
    Filed: November 19, 2021
    Publication date: October 3, 2024
    Applicants: Universite Mohamed VI Polytechnique, OCP SA
    Inventors: Khaoula Khaless, Rachid Boulif, Rachid Benhida
  • Process for producing sodium sulphate from phosphogypsum
    Patent number: 10689261
    Abstract: The present invention relates to a process for producing sodium sulphate from phosphogypsum, comprising: a step (101) of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution (S) containing metal impurities, said basic solution comprising a chelating agent suitable for forming complexes with at least one part of said metal impurities, at least one first step (103, 104) of filtration of the sodium sulphate solution by a nanofiltration membrane (NF1, NF2), so as to form a concentrate (C1, C2) containing said complexes and a permeate (P1, P2), a step (105) of evaporation of the permeate (P1, P2) so as to form anhydrous sodium sulphate.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 23, 2020
    Inventors: Khaoula Khaless, Driss Dhiba
  • PROCESS FOR PRODUCING SODIUM SULPHATE FROM PHOSPHOGYPSUM
    Publication number: 20190263668
    Abstract: The present invention relates to a process for producing sodium sulphate from phosphogypsum, comprising: a step (101) of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution (S) containing metal impurities, said basic solution comprising a chelating agent suitable for forming complexes with at least one part of said metal impurities, at least one first step (103, 104) of filtration of the sodium sulphate solution by a nanofiltration membrane (NF1, NF2), so as to form a concentrate (C1, C2) containing said complexes and a permeate (P1, P2), a step (105) of evaporation of the permeate (P1, P2) so as to form anhydrous sodium sulphate.
    Type: Application
    Filed: July 27, 2017
    Publication date: August 29, 2019
    Applicant: OCP SA
    Inventors: Khaoula KHALESS, Driss DHIBA