Patents by Inventor Paulo Cesar Abreu

Paulo Cesar Abreu 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 removing pollutants from produced water
    Patent number: 7955505
    Abstract: A method which improves the quality of effluent from the process of the industrial production of petroleum, usually referred to as produced water. This method makes it possible to reduce the concentration of pollutants in produced water requiring treatment by removing these pollutants through the use of cultures of microalgae that have passed through a process of natural selection and are naturally adapted to the hostile environment offered by produced water.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: June 7, 2011
    Assignee: Petroleo Brasileira S.A.—Petrobras
    Inventors: Leonardo Brantes Bacellar Mendes, Paulo Cesar Rodrigues Cunha, Marcelo Gonçalves Montes D'oca, Paulo César Abreu, Ednei Gilberto Primel
  • METHOD FOR REMOVING POLLUTANTS FROM PRODUCED WATER
    Publication number: 20090200230
    Abstract: A method which improves the quality of effluent from the process of the industrial production of petroleum, usually referred to as produced water. This method makes it possible to reduce the concentration of pollutants in produced water requiring treatment by removing these pollutants through the use of cultures of microalgae that have passed through a process of natural selection and are naturally adapted to the hostile environment offered by produced water.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 13, 2009
    Applicant: PETROLEO BRASILEIRO S.A.
    Inventors: Leonardo Brantes Bacellar Mendes, Paulo Cesar Rodrigues Cunha, Marcelo Goncalves Montes D'oca, Paulo Cesar Abreu, Ednei Gilberto Primel