Patents by Inventor Roberto Ricardo RANGEL

Roberto Ricardo RANGEL 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 purifying biodiesel
    Patent number: 10266781
    Abstract: The present invention describes a process for purifying biodiesel without using a filter aid, in which purification of the biodiesel takes place by a sequence of washing operations after the reaction section, with stirring that is sufficiently vigorous to assist in the transformation of the molecules of esterified steryl glycosides, in order to convert them to a chemical form that can be removed by the process.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: April 23, 2019
    Assignee: PETRÓLEO BRASILEIRO S.A.—PETROBRAS
    Inventors: Jose Antonio Vidal Vieira, Vitor Loureiro Ximenes, Carolina Ludwig Quintani, Marcio De Figueiredo Portilho, Roberto Ricardo Rangel
  • PROCESS FOR PURIFYING BIODIESEL
    Publication number: 20180094201
    Abstract: The present invention describes a process for purifying biodiesel without using a filter aid, in which purification of the biodiesel takes place by a sequence of washing operations after the reaction section, with stirring that is sufficiently vigorous to assist in the transformation of the molecules of esterified steryl glycosides, in order to convert them to a chemical form that can be removed by the process.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 5, 2018
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Jose Antonio Vidal VIEIRA, Vitor Loureiro XIMENES, Carolina Ludwig QUINTANI, Marcio DE FIGUEIREDO PORTILHO, Roberto Ricardo RANGEL