Patents by Inventor Cristian TUNSU

Cristian TUNSU 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: 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
  • 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
  • Publication number: 20200339445
    Abstract: The present invention relates to a method for electrochemical purification of an aqueous solution comprising the steps of: providing a cathode and an anode to an aqueous solution, wherein said aqueous solution comprises soluble ions of at least one toxic heavy metal and wherein said cathode comprises an outer surface, which outer surface comprises a noble metal; applying an absolute potential to said cathode and wherein said absolute potential of said cathode drives the formation of an alloy comprising said noble metal and said at least one toxic heavy metal.
    Type: Application
    Filed: October 29, 2018
    Publication date: October 29, 2020
    Applicant: ATIUM AB
    Inventors: Björn WICKMAN, Cristian TUNSU