Patents by Inventor Joni Hautojärvi

Joni Hautojärvi 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 recovering metals from a spent catalyst composition
    Patent number: 8282705
    Abstract: A method is provided for recovering metals from a spent catalyst composition containing an organic contaminant and catalytically active metals on a catalyst support. The metals are leached from the spent catalyst composition by adding under stirring an ionic liquid. The ionic liquid containing the leached metals is separated from the organic contaminant and the catalyst support by adding under stirring an anti-solvent. After removing the organic contaminant and the catalyst support, the leached metals are separated from the ionic liquid for example by selective precipitation, ion exchange, solvent extraction, electrodeposition, chromatographic, or pyrometallurgical methods.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: October 9, 2012
    Assignees: Crisolteq Oy, OMG Kokkla Chemicals Oy
    Inventors: Kenneth Ekman, Manne Carla, Mats Sundell, Virginie Suhonen, Joni Hautojärvi
  • METHOD FOR RECOVERY
    Publication number: 20100206134
    Abstract: A method is provided for recovering metals from a spent catalyst composition containing an organic contaminant and catalytically active metals on a catalyst support. The metals are leached from the spent catalyst composition by adding under stirring an ionic liquid. The ionic liquid containing the leached metals is separated from the organic contaminant and the catalyst support by adding under stirring an anti-solvent. After removing the organic contaminant and the catalyst support, the leached metals are separated from the ionic liquid for example by selective precipitation, ion exchange, solvent extraction, electrodeposition, chromatographic, or pyrometallurgical methods.
    Type: Application
    Filed: June 18, 2008
    Publication date: August 19, 2010
    Applicant: CrisolteQ Oy
    Inventors: Kenneth Ekman, Manne Carla, Mats Sundell, Virginie Suhonen, Joni Hautojärvi