Patents by Inventor Hugo Adan Carlos Barrientos

Hugo Adan Carlos Barrientos 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 the production of battery grade lithium carbonate from natural and industrial brines
    Patent number: 8691169
    Abstract: It is possible to produce battery grade metallic lithium from naturally occurring or industrial brine by a process comprising the following steps: (i) precipitating magnesium with calcium hydroxide; (ii) removal of boron via extraction of solvents; (iii) precipitation of lithium with sodium carbonate; (iv) transformation of lithium carbonate to bicarbonate of lithium with carbonic acid; (v) decomposition of bicarbonate of lithium into high purity lithium carbonate as a result of heating of the solution. Re-precipitation of lithium carbonate by the formation of bicarbonate of lithium allows for the removal of the majority of contaminants which co-purify with lithium carbonate and yield battery grade highly purified lithium carbonate.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 8, 2014
    Inventors: Waldo Perez, Hugo Adan Carlos Barrientos, Claudio Suarez, Marcelo Bravo