Patents by Inventor Meng-Wei Wan

Meng-Wei Wan 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 Sulfides from a Liquid Fossil Fuel
    Publication number: 20140374320
    Abstract: The desulfurization of fossil fuels is provided by the combination of fossil fuels with an aqueous mixture of ozone or hydrogen peroxide and a Tetraoctylphosphonium salt phase transfer catalyst, and the mixture is then subjected to reactive mixing to form oxidize sulfur compounds in the fuel. The polar oxidized sulfones species are removed via another mixing step. The desulfurization device can be in the form of a portable device which provides for continuous mixing-assisted desulfurization for the removal of sulfur containing compounds from fossil fuels such as diesel fuel.
    Type: Application
    Filed: September 12, 2014
    Publication date: December 25, 2014
    Inventors: Hsin Tung Lin, Meng-Wei Wan, Ming-Chun Lu
  • Ultrasound-assisted oxidative desulfurization of diesel fuel using quaternary ammonium fluoride and portable unit for ultrasound-assisted oxidative desulfurization
    Patent number: 8197763
    Abstract: The desulfurization of fossil fuels is effected by the combination of fossil fuels with an aqueous mixture of hydroperoxide and quaternary ammonium fluoride phase transfer catalyst, the mixture then subjected to ultrasound to oxidize sulfur compounds present in the fuels. The polar oxidized species are removed via extraction. Another aspect is a portable, continuous ultrasound assisted desulfurization device having a sonoreactor for subjecting mixtures of fossil fuels to sonication to effect removal of sulfur containing compounds.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: June 12, 2012
    Assignee: University of Southern California
    Inventors: Teh-Fu Yen, Meng-Wei Wan
  • MIXING-ASSISTED OXIDATIVE DESULFURIZATION OF DIESEL FUEL USING QUATERNARY AMMONIUM SALT AND PORTABLE UNIT THEREOF
    Publication number: 20120018350
    Abstract: The desulfurization of fossil fuels is provided by the combination of fossil fuels with an aqueous mixture of ozone or hydrogen peroxide and a Tetraoctylphosphonium salt phase transfer catalyst, and the mixture is then subjected to reactive mixing to form oxidize sulfur compounds in the fuel. The polar oxidized sulfones species are removed via another mixing step. The desulfurization device can be in the form of a portable device which provides for continuous mixing-assisted desulfurization for the removal of sulfur containing compounds from fossil fuels such as diesel fuel.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 26, 2012
    Inventors: Hsin Tung Lin, Meng-Wei Wan, Ming-Chun Lu
  • Ultrasound-Assisted Oxidative Desulfurization of Diesel Fuel Using Quaternary Ammonium Fluoride and Portable Unit for Ultrasound-Assisted Oxidative Desulfurization
    Publication number: 20080173571
    Abstract: The desulfurization of fossil fuels is effected by the combination of fossil fuels with an aqueous mixture of hydroperoxide and quaternary ammonium fluoride phase transfer catalyst, the mixture then subjected to ultrasound to oxidize sulfur compounds present in the fuels. The polar oxidized species are removed via extraction. Another aspect is a portable, continuous ultrasound assisted desulfurization device having a sonoreactor for subjecting mixtures of fossil fuels to sonication to effect removal of sulfur containing compounds.
    Type: Application
    Filed: September 13, 2007
    Publication date: July 24, 2008
    Inventors: Teh-Fu Yen, Meng-Wei Wan