Patents Assigned to Krupinite Corporation Ltd.
  • Chemical beneficiation of raw material containing tantalum-niobium
    Patent number: 7718147
    Abstract: The invention relates to a process for the chemical beneficiation of raw material containing tantalum-niobium such as wastes, scoria, concentrates and ores.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: May 18, 2010
    Assignee: Krupinite Corporation Ltd.
    Inventor: Alexander Krupin