Patents by Inventor Antonio Pedro Oliveira Filho

Antonio Pedro Oliveira Filho 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).

  • Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate
    Publication number: 20180200731
    Abstract: This invention relates to an composition, comprising A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate B) at least one antifoam agent C) a solvent and its use in the reverse flotation of calcium carbonate.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 19, 2018
    Applicants: CLARIANT INTERNATIONAL LTD., Clariant S.A.
    Inventors: Stefan DILSKY, Wagner Claudio DA SILVA, Monica SPECK CASSOLA, Nilson Mar BARTALINI, Zaira Guimaraes DUARTE, Jorge Antonio ARIAS MEDINA, Antonio Pedro OLIVEIRA FILHO
  • Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate
    Publication number: 20150273481
    Abstract: This invention relates to an composition, comprising A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate B) at least one antifoam agent C) a solvent and its use in the reverse flotation of calcium carbonate.
    Type: Application
    Filed: May 22, 2013
    Publication date: October 1, 2015
    Applicants: Clariant S.A., Clariant Finance (BVI) Limited
    Inventors: Stefan Dilsky, Wagner Claudio Da Silva, Monica Speck Cassola, Nilson Mar Bartalini, Zaira Guimaraes Duarte, Jorge Antonio Arias Medina, Antonio Pedro Oliveira Filho
  • Composition For Dressing Phosphate Ore
    Publication number: 20150238976
    Abstract: The invention relates to a flotation agent for phosphate ore, comprising at least one fatty acid and at least one sarcosinate of the formula (I) wherein R is a C7 to C21 alkyl or alkenyl group, which sarcosinate may be present in the form of a cation derived therefrom caused by protonation of the nitrogen atom, wherein the amount of fatty acid is from 70 to 99 wt.-%, and wherein the amount of the sarcosinate of the formula (I) is from 1 to 30 wt.-%.
    Type: Application
    Filed: August 20, 2013
    Publication date: August 27, 2015
    Inventors: Wagner Claudio Da Silva, Klaus Ulrich Pedain, Nilson Mar Bartalini, Zaira Guimaraes Duarte, Monica Speck Cassola, Jorge Antonio Arias Medina, Antonio Pedro Oliveira Filho