Patents by Inventor Julio Cesar Bittencourt

Julio Cesar Bittencourt 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).

  • Concentration/calcination process of zinc silicated minerals and concentrate zinc silicate based product
    Patent number: 7172074
    Abstract: A concentration process of zinc silicated minerals, particularly willemite and calamine concentration, by single operations, or conventional steps of ore treatment, some of which include the following: Preparation of stockpiles of different mineralogical and contents compositions, crushing, screening, storage, dense separation, washing, homogenization, magnetic separation, grinding, classification, rubbing, conditioning, flotation, thickening, filtering, calcination, storage and waste deposition.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: February 6, 2007
    Assignee: Compamhia Mineira de Metais
    Inventor: Julio Cesar Bittencourt
  • Beneficiation process for concentration/calcination of zinc silicate ores minerales
    Publication number: 20040081603
    Abstract: This invention deals with the concentration process of zinc silicated minerals, particularly willemite and calamine concentration, by single operations, or conventional steps of ore treatment, some of which include the following: Preparation of stockpiles of different mineralogical and contents compositions, crushing, screening, storage, dense separation, washing, homogenization, magnetic separation, grinding, classification, rubbing, conditioning, flotation, thickening, filtering, calcination, storage and waste deposition.
    Type: Application
    Filed: November 13, 2003
    Publication date: April 29, 2004
    Inventor: Julio Cesar Bittencourt