Patents by Inventor Marshall Stephen Lee

Marshall Stephen Lee 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).

  • Patent number: 10322393
    Abstract: A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: June 18, 2019
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: André Peter Steynberg, Evert Phillippus Kleynhans, Marshall Stephen Lee, Hermanus Gerhardus Nel, Jako Louw
  • Publication number: 20180117558
    Abstract: A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body.
    Type: Application
    Filed: December 27, 2017
    Publication date: May 3, 2018
    Applicant: Sasol Technology (Proprietary) Limited
    Inventors: André Peter Steynberg, Evert Phillippus Kleynhans, Marshall Stephen Lee, Hermanus Gerhardus Nel, Jako Louw
  • Patent number: 9937476
    Abstract: A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: April 10, 2018
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: André Peter Steynberg, Evert Phillippus Kleynhans, Marshall Stephen Lee, Hermanus Gerhardus Nel, Jako Louw
  • Publication number: 20140371334
    Abstract: A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITED
    Inventors: André Peter Steynberg, Evert Phillippus Kleynhans, Marshall Stephen Lee, Hermanus Gerhardus Nel, Jako Louw