Patents by Inventor Björn Saxén

Björn Saxén 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 leaching a sulphidic metal concentrate
    Patent number: 9359657
    Abstract: A method for leaching a sulfidic metal concentrate in hydrometallurgical production of metal in a leaching process from which hot water vapor containing off-gas is conducted out and to which an acid solution warmed up to an elevated temperature is conducted. The acid solution is warmed up to an elevated temperature by bringing off-gas of the leaching step into direct contact with the acid solution.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: June 7, 2016
    Assignee: Outotec Oyj
    Inventors: Timo Haakana, Björn Saxén
  • METHOD FOR LEACHING A SULPHIDIC METAL CONCENTRATE
    Publication number: 20140311296
    Abstract: A method for leaching a sulfidic metal concentrate in hydrometallurgical production of metal in a leaching process from which hot water vapor containing off-gas is conducted out and to which an acid solution warmed up to an elevated temperature is conducted. The acid solution is warmed up to an elevated temperature by bringing off-gas of the leaching step into direct contact with the acid solution.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 23, 2014
    Inventors: Timo Haakana, Björn Saxén