Patents by Inventor Alexander Krupin

Alexander Krupin 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).

  • 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
  • Chemical Beneficiation of Raw Material Containing Tantalum-Niobium
    Publication number: 20090202405
    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: Application
    Filed: January 24, 2006
    Publication date: August 13, 2009
    Inventor: Alexander Krupin