Patents Assigned to Valvas Oy
  • Patent number: 8303793
    Abstract: The invention relates to a method of providing an electric current taker made from silver and having a highly electroconductive contact surface into an aluminium support bar to be used in electrolysis.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: November 6, 2012
    Assignee: Valvas Oy
    Inventor: Niko Hagner