Patents by Inventor Marcus Vinicius Eiffle Duarte

Marcus Vinicius Eiffle Duarte 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 simultaneous removal of arsenic and sulphur from hydrocarbon streams
    Patent number: 10370604
    Abstract: The present invention describes a process for the simultaneous removal of arsenic and sulphur compounds from hydrocarbon streams of fossil origin, wherein hydrocarbon streams of fossil origin resulting from the retorting process of schist are purified by direct contact with hydrated iron oxide, such as goethite (?-FeOOH) in its raw natural form (limonite ore particles).
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 6, 2019
    Assignee: PETROLEO BRASILEIRO S.A.—PETROBRAS
    Inventors: Wladmir Ferraz De Souza, Marcus Vinicius Eiffle Duarte, Lilian Ernst, Carmen Lucia Tavares Da Silva
  • PROCESS FOR SIMULTANEOUS REMOVAL OF ARSENIC AND SULPHUR FROM HYDROCARBON STREAMS
    Publication number: 20180086992
    Abstract: The present invention describes a process for the simultaneous removal of arsenic and sulphur compounds from hydrocarbon streams of fossil origin, wherein hydrocarbon streams of fossil origin resulting from the retorting process of schist are purified by direct contact with hydrated iron oxide, such as goethite (?-FeOOH) in its raw natural form (limonite ore particles).
    Type: Application
    Filed: September 27, 2017
    Publication date: March 29, 2018
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Wladmir FERRAZ DE SOUZA, Marcus Vinicius Eiffle DUARTE, Lilian ERNST, Carmen Lucia TAVARES DA SILVA
  • Process for removing silicon compounds from hydrocarbon streams
    Patent number: 8106250
    Abstract: The present invention relates to a process for removing organic silicon compounds from hydrocarbon streams by contact with an adsorbent and hydrogen. The adsorbent is composed of lamellar double hydroxides and group VI-B or group VIII hydrogenating metal. More specifically, the process of the present invention involves a stage of activation for formation of the lamellar double hydroxide, and maintaining the phase of lamellar double hydroxide by adding water.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: January 31, 2012
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Rafael Menegassi de Almeida, Carlos René Klotz Rabello, Marcus Vinicius Eiffle Duarte, Guilherme Luis Monteiro de Souza, Joyce Leslie, legal representative, Xiaondong Hu
  • Process for selective hydrodesulfurization of naphtha
    Patent number: 7785461
    Abstract: A process for the selective hydrodesulfurization of a naphtha containing olefins and organosulfur compounds is disclosed, which minimizes the hydrogenation of the olefins and results in a product with a low sulfur content. The process involves a two-stage hydrodesulfurization with H2S removed from the first stage effluent. A flow of hydrogen and at least one added non-reactive compound is fed into the first stage, wherein the H2 molar fraction ranges from 0.2 to 1.0, and with H2S at the reactor intake limited to a maximum of 0.1% by volume. The second stage involves a feedstream of hydrogen and at least one added non-reactive compound, wherein the H2 molar fraction ranges from 0.2 to 0.7 and with H2S at the reactor intake limited to a maximum of 0.05% by volume.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: August 31, 2010
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Rafael Menegassi De Almeida, Jefferson Roberto Gomes, Marcelo Edral Pacheco, Marcus Vinicius Eiffle Duarte, Rogerio Oddone, Giane Ribeiro Stuart
  • PROCESS FOR REMOVING SILICON COMPOUNDS FROM HYDROCARBON STREAMS
    Publication number: 20100038287
    Abstract: The present invention relates to a process for removing organic silicon compounds from hydrocarbon streams by contact with an adsorbent and hydrogen. The adsorbent is composed of lamellar double hydroxides and group VI-B or group VIII hydrogenating metal. More specifically, the process of the present invention involves a stage of activation for formation of the lamellar double hydroxide, and maintaining the phase of lamellar double hydroxide by adding water.
    Type: Application
    Filed: July 28, 2009
    Publication date: February 18, 2010
    Applicant: PETROLEO BRASILEIRO S.A.- PETROBRAS
    Inventors: Rafael MENEGASSI DE ALMEIDA, Carlos René Klotz RABELLO, Marcus Vinicius Eiffle DUARTE, Guilherme Luis MONTEIRO DE SOUZA, Joyce Leslie, Xiaondong HU