Patents by Inventor Ulf V. Kuylenstierna

Ulf V. Kuylenstierna 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).

  • Re-extracting metal chloride complex from an organic extraction solution
    Patent number: 4203964
    Abstract: The invention relates to the re-extraction of a metal from an organic extraction solution in which the metal is present as a metal chloride complex bonded to an extractant. The organic extraction solution is contacted with an aqueous solution, to transfer metal ions and chloride ions to the aqueous solution. Sulphuric acid is added to the aqueous solution, which is subsequently heated to drive off hydrogen chloride and water. Metal sulphate is removed from the acidified aqueous solution.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: May 20, 1980
    Assignee: MX-Processer Reinhardt & Co. AB
    Inventors: Hans Reinhardt, Ulf V. Kuylenstierna