Patents by Inventor Ragnar SJÖDAHL

Ragnar SJÖDAHL 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).

  • PROCESS FOR CATHODE ACTIVE MATERIAL PRECURSOR PREPARATION
    Publication number: 20240102127
    Abstract: The present invention relates to a process for producing a cathode active material precursor having a desired active material target ratio for use in a lithium-ion secondary cell or in the production of a lithium-ion secondary cell.
    Type: Application
    Filed: February 7, 2022
    Publication date: March 28, 2024
    Inventors: Mahmood ALEMRAJABI, Ragnar SJÖDAHL, Emma NEHRENHEIM, Robert JENSEN
  • PROCESS FOR THE RECOVERY OF CATHODE MATERIALS IN THE RECYCLING OF BATTERIES
    Publication number: 20230042034
    Abstract: A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.
    Type: Application
    Filed: October 17, 2022
    Publication date: February 9, 2023
    Inventors: Mahmood ALEMRAJABI, Ingrid KARLSSON, Ragnar SJÖDAHL, Emma NEHRENHEIM, Martina PETRANIKOVA, Cristian TUNSU
  • Process for the recovery of cathode materials in the recycling of batteries by removing aluminum and iron
    Patent number: 11509000
    Abstract: A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: November 22, 2022
    Assignee: NORTHVOLT AB
    Inventors: Mahmood Alemrajabi, Ingrid Karlsson, Ragnar Sjödahl, Emma Nehrenheim, Martina Petranikova, Cristian Tunsu
  • PROCESS FOR THE RECOVERY OF CATHODE MATERIALS IN THE RECYCLING OF BATTERIES
    Publication number: 20220149452
    Abstract: A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.
    Type: Application
    Filed: April 14, 2020
    Publication date: May 12, 2022
    Inventors: Mahmood ALEMRAJABI, Ingrid KARLSSON, Ragnar SJÖDAHL, Emma NEHRENHEIM, Martina PETRANIKOVA, Cristian TUNSU