Patents by Inventor Bo Idstrom

Bo Idstrom 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).

  • Process and composition for the froth flotation beneficiation of iron minerals from iron ores
    Patent number: 4830739
    Abstract: A process and composition are provided for the froth flotation beneficiation of iron minerals from iron ores containing silicate and phosphate minerals, comprising as collectors a combination of a primary amine and a nitrogen compound containing an anionic group selected from methylene carboxylic acid, ethylene phosphoric acid and methylene phosphonic acid.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: May 16, 1989
    Assignee: Berol Kemi AB
    Inventors: Martin Hellsten, Marie Ernstsson, Bo Idstrom
  • Process and composition for the froth flotation beneficiation of iron minerals from iron ores
    Patent number: 4795578
    Abstract: A process and composition are provided for the froth flotation beneficiation of iron minerals from iron ores containing silicate and phosphate minerals, comprising as collectors a combination of a primary amine and a nitrogen compound containing an anionic group selected from methylene carboxylic acid, ethylene phosphoric acid and methylene phosphonic acid.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: January 3, 1989
    Assignee: Berol Kemi AB
    Inventors: Martin Hellsten, Marie Ernstsson, Bo Idstrom
  • Process and composition for the froth flotation beneficiation of iron minerals from iron ores
    Patent number: 4732667
    Abstract: A process and composition are provided for the froth flotation beneficiation of iron minerals from iron ores containing silicate and phosphate minerals, comprising as collectors a combination of a primary amine and a nitrogen compound containing an anionic group selected from methylene carboxylic acid, ethylene phosphoric acid and methylene phosphonic acid.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: March 22, 1988
    Assignee: Berol Kemi AB
    Inventors: Martin Hellsten, Marie Ernstsson, Bo Idstrom