Patents by Inventor Mariela Araujo

Mariela Araujo 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 H2S and CO2 from above ground hydrocarbon streams
    Patent number: 6740141
    Abstract: A method for removing at least one contaminant selected from the group consisting of H2S and CO2 from contaminating streams, including the steps of providing an above ground stream comprising hydrocarbon containing the at least one contaminant, and positioning metal-containing nanoparticles having a particle size of less than or equal to about 100 nm in the stream, the metal-containing nanoparticles being selected from the group consisting of metal oxides, metal hydroxides and combinations thereof, whereby the nanoparticles adsorb the contaminants from the stream.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: May 25, 2004
    Assignees: Intevep, S.A., NanoScale Materials, Inc.
    Inventors: Douglas Espin, Aaron Ranson, Mariela Araujo, Kenneth Klabunde, Shawn Decker, Slawomir Winecki
  • Water-based system for altering wettability of porous media
    Patent number: 6579572
    Abstract: A method for altering wettability of a reservoir formation includes the steps of providing a water-based fluid containing a wettability altering coating system; and flowing the fluid into a reservoir so as to coat the reservoir with the coating system.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Intevep, S.A.
    Inventors: Douglas Espin, Aaron Ranson, Juan Carlos Chavez, Mariela Araujo, Yani Carolina Araujo, Luis Carlos Genolet
  • Method for removing H2S and CO2 from crude and gas streams
    Publication number: 20030033934
    Abstract: A method for removing at least one contaminant selected from the group consisting of H2S and CO2 from hydrocarbon streams, including the steps of providing a stream of hydrocarbon containing the at least one contaminant, and positioning metal-containing nanoparticles in the stream, the metal-containing nanoparticles being selected from the group consisting of metal oxides, metal hydroxides and combinations thereof, whereby the nanoparticles adsorb the contaminants from the stream.
    Type: Application
    Filed: August 26, 2002
    Publication date: February 20, 2003
    Inventors: Douglas Espin, Aaron Ranson, Mariela Araujo, Kenneth Klabunde, Shawn Decker, Slawomir Winecki
  • Water-based system for altering wettability of porous media
    Publication number: 20030031788
    Abstract: A method for altering wettability of a reservoir formation includes the steps of providing a water-based fluid containing a wettability altering coating system; and flowing the fluid into a reservoir so as to coat the reservoir with the coating system.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 13, 2003
    Inventors: Douglas Espin, Aaron Ranson, Juan Carlos Chavez, Mariela Araujo, Yani Carolina Araujo, Luis Carlos Genolet
  • Method for removing H2S and CO2 from crude and gas streams
    Publication number: 20030005822
    Abstract: A method for removing at least one contaminant selected from the group consisting of H2S and CO2 from hydrocarbon streams, including the steps of providing a stream of hydrocarbon containing the at least one contaminant; the positioning metal-containing nanoparticles in the stream, the metal-containing nanoparticles being selected from the group consisting of metal oxides, metal hydroxides and combinations thereof, whereby the nanoparticles adsorb the contaminants from the stream.
    Type: Application
    Filed: August 7, 2002
    Publication date: January 9, 2003
    Inventors: Douglas Espin, Aaron Ranson, Mariela Araujo
  • METHOD FOR REMOVING H2S AND CO2 FROM CRUDE AND GAS STREAMS
    Publication number: 20020157536
    Abstract: A method for removing at least one contaminant selected from the group consisting of H2S and CO2 from hydrocarbon streams, including the steps of providing a stream of hydrocarbon containing the at least one contaminant; the positioning metal-containing nanoparticles in the stream, the metal-containing nanoparticles being selected from the group consisting of metal oxides, metal hydroxides and combinations thereof, whereby the nanoparticles adsorb the contaminants from the stream.
    Type: Application
    Filed: September 27, 2001
    Publication date: October 31, 2002
    Inventors: Douglas Espin, Aaron Ranson, Mariela Araujo
  • Method for removing H2S and CO2 from crude and gas streams
    Patent number: 6447577
    Abstract: A method for removing at least one contaminant selected from consisting of H2S and CO2 from hydrocabon streams, including the steps of providing a stream of hydrocarbon containg the at least one contaminant; the positioning metal-containing nanoparticles in the streams, the metal-containing nanoparticles being selected from the group consisting of metal oxides, metal hydroxides and combination thereof, whereby the nanoparticles absorb the contaminants from the stream.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: September 10, 2002
    Assignee: Intevep, S. A.
    Inventors: Douglas Espin, Aaron Ranson, Mariela Araujo