Patents by Inventor Ronaldo Moreira De Horta

Ronaldo Moreira De Horta 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 for enrichment of anatase mechanical concentrates in order to obtain synthetic rutile with low contents of rare earth and radioactive elements
    Patent number: 7618601
    Abstract: A process for the enrichment of anatase mechanical concentrates, in order to obtain synthetic rutile with low contents of rare earth and radioactive elements, comprising the steps of: calcination of the anatase concentrate; reduction of the calcined product; dry or wet low-intensity magnetic separation of the reduced product; dry, high-intensity, high-gradient magnetic separation of the non-magnetic fraction from the low-intensity separation; leaching of the high-intensity magnetic fraction; oxidation of the dried product; leaching of the quenched product; filtering of the product from the second leaching; drying of the filtered product; and dry, high-intensity, high-gradient magnetic separation of the product of the second leaching.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: November 17, 2009
    Assignee: Companhia Vale Do Rio Doce
    Inventors: Lino Rodrigues De Freitas, Ronaldo Moreira De Horta, Joao Alberto Lessa Tude