Patents by Inventor David West

David West 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: 12599886
    Abstract: A reactor (12) and method for the conversion of hydrocarbons utilizes a reactor (12) having a unique feed assembly (56) that creates an inwardly spiraling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a conduit (46) with a constricted neck portion or nozzle (52). At least a portion of the swirling gas mixture forms a thin, annular mixed gas flow layer immediately adjacent to the conduit (46). A portion of the swirling gas mixture is combusted as the swirling gas mixture passes through the conduit (46) for conversion of hydrocarbons.
    Type: Grant
    Filed: October 19, 2023
    Date of Patent: April 14, 2026
    Assignee: SABIC Global Technologies B.V.
    Inventors: Sreekanth Pannala, Vladimir Shtern, Lei Chen, David West
  • Patent number: 12515200
    Abstract: The invention relates to a composition containing an oxide supported oxidative coupling of methane catalyst having an excellent balance of catalytic activity and selectivity while retaining desired levels mechanical stability suitable for commercial reactor application. Particularly, the inventive catalyst is an oxide supported catalyst with the oxide catalyst support having a spherical diameter of less than 2 mm and a surface area of less than less than 9.5 m2/g while retaining a water sorption volume of at least 0.2 cc/g. The invention further provides a method for preparing such a composition containing an oxide supported catalyst, using a combination of thermal treatment of the oxide catalyst support, active component impregnation and followed up by calcination. Additionally, the invention also describes a process for producing C2+ hydrocarbons, using such a catalyst composition.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: January 6, 2026
    Assignee: SABIC Global Technologies B.V.
    Inventors: Wugeng Liang, Hector Perez, Pankaj Singh Gautam, David West
  • Publication number: 20250207037
    Abstract: A method for producing lower hydrocarbons by a thermal cracking reaction from mixed waste plastic (MWP) is disclosed herein. The method includes: a. forming a mixed gas comprising methane and hydrogen, b. combining the mixed gas with the MWP to form a reaction mixture, c. reacting the reaction mixture in a reactor at a pressure of 1 to 40 bars, a temperature of 800° C. to 1200° C. and a residence time of 10 to 300 milliseconds in the reactor, and d. producing a lower hydrocarbon product stream through the outlet of the reactor. The methane/hydrogen mol ratio in the mixed gas is from 0.1 to 5.
    Type: Application
    Filed: March 29, 2023
    Publication date: June 26, 2025
    Inventors: Aghaddin Khanlar Mamedov, David West, Byeongjin Baek
  • Publication number: 20250186963
    Abstract: The invention is directed to a chemical reactor (100) having (a) two or more gas reactor elements (12) with each gas reactor element (12) having (i) a first reaction chamber (38), and (ii) a feed assembly unit (36), (b) a second reaction chamber (20) coupled with each of the two or more gas reactor elements (12) and configured to independently receive two or more product streams from the two or more gas reactor elements (12); and optionally, (c) a gas converging section (40) located downstream to the second reaction chamber (20). The invention is further directed to a method of producing chemical products using the chemical reactor (100) of the present invention.
    Type: Application
    Filed: February 25, 2025
    Publication date: June 12, 2025
    Inventors: Lei Chen, Sreekanth Pannala, David West
  • Patent number: 12263460
    Abstract: The invention is directed to a chemical reactor (100) having (a) two or more gas reactor elements (12) with each gas reactor element (12) having (i) a first reaction chamber (38), and (ii) a feed assembly unit (36), (b) a second reaction chamber (20) coupled with each of the two or more gas reactor elements (12) and configured to independently receive two or more product streams from the two or more gas reactor elements (12); and optionally, (c) a gas converging section (40) located downstream to the second reaction chamber (20). The invention is further directed to a method of producing chemical products using the chemical reactor (100) of the present invention.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: April 1, 2025
    Assignee: SABIC Global Technologies B.V.
    Inventors: Lei Chen, Sreekanth Pannala, David West
  • Publication number: 20250051248
    Abstract: An oxidative methane coupling (OCM) reactor has a reactor vessel that defines a reactor vessel interior. The reactor vessel having opposite ends and a central longitudinal axis that extends between the opposite ends. A catalyst bed assembly is positioned within the reactor vessel interior having a catalyst bed containing a layer of OCM catalyst of a uniform thickness. The catalyst bed assembly divides the reactor vessel interior into an upstream zone and a downstream zone. The catalyst bed has an upstream face for receiving the one or more flowing feed gases of methane and oxygen gas as a flowing mixture from the upstream zone. The upstream face of the catalyst bed is configured to have a total area that exceeds the largest transverse cross-sectional area of the interior of the reactor vessel that is perpendicular to the central longitudinal axis of the reactor vessel.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 13, 2025
    Inventors: Pankaj Singh Gautam, David West, Robert Broekhuis, Tian Gu
  • Publication number: 20250019503
    Abstract: Polymeric compositions that include a polymer matrix and a germicidal additive dispersed in the polymer matrix are described. The germicidal additive includes a metal complexed cyanurate composition having a general formula of Ax[My(C3O3N3Cl2)z], where A is a counterion, x, y, and z are each independently 1 to 6, and M is a transition metal.
    Type: Application
    Filed: June 7, 2023
    Publication date: January 16, 2025
    Inventors: Tayirjan Taylor Isimjan, Maher N. Aloufi, David West, Dhanabalan Anantharaman, Toseef Ahmed
  • Patent number: 12145144
    Abstract: A fluid-solids contactor comprising an annular rotating fluidized bed and a method of using the same are disclosed. The fluid-solids contactor includes a vessel and a plurality feed inlets disposed thereon. The vessel comprises a stationary inner wall, an outer wall, and a chamber formed between the stationary inner wall and the outer wall. The feed inlets are configured to create an annular rotating bed with mixture of solids and a fluid when the solid particles and a fluid are fed into the chamber. The stationary inner wall of the vessel is permeable to the fluid such that the fluid from the chamber can be continuously withdrawn from the solids to the space within the stationary inner wall of the vessel.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: November 19, 2024
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Sreekanth Pannala, Christoph Dittrich, David West, Tingwen Li
  • Publication number: 20240336747
    Abstract: Disclosed is a method of preparing a polymer composite component, wherein the method comprises uniformly dispersing glycerol and metal ions on a polymer powder to create a polymer composite powder, extruding the polymer composite powder at a temperature of at least 80° C., thereby converting a portion of the metal ions to metal atoms, and then forming the component from the extruded polymer composite. The component can be a thin film, to be applies to surfaces to increase antimicrobial properties.
    Type: Application
    Filed: April 24, 2023
    Publication date: October 10, 2024
    Inventors: Tayirjan Taylor Isimjan, Maher N. Aloufi, David West, Toseef Ahmed
  • Patent number: 12030037
    Abstract: A catalyst composition, suitable for producing ethylene and other C2+ hydrocarbons, from methane. The composition comprises a blended product of two distinct catalyst components, blended at such synergistic proportions that results in a catalyst having high ethylene selectivity while maintaining low ethyne selectivity and sufficient catalytic activity rate. The invention further provides a method for preparing such a catalyst composition and a process for producing ethylene and other C2+ hydrocarbons, using such a catalyst composition.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 9, 2024
    Assignee: Sabic Global Technologies B.V.
    Inventors: Wugeng Liang, David West, Hector Perez, Sagar Sarsani, Luanyi Elizabeth Li
  • Patent number: 11986800
    Abstract: The invention relates to a composition containing a catalyst having high catalytic stability for conducting oxidative coupling of methane (OCM) at high carbon efficiency, while improving both methane and oxygen conversion. Particularly, the inventive catalyst is a metal oxide supported catalyst, which contains an alkali metal promoter and a mixed metal oxide component having at least one alkali earth metal and at least one rare earth metal. The metal oxide support is selected in a manner, such that at least a portion of the metal oxide support is capable of reacting with at least a part or whole of the alkali metal promoter under conditions of calcination during catalyst preparation. The invention further provides a method for preparing such a metal oxide supported catalyst composition, using a calcination process. Additionally, the invention further describes a process for producing C2+ hydrocarbons, using such a catalyst composition.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: May 21, 2024
    Assignee: SABIC GLOBAL TECHNOLOGIES, B.V.
    Inventors: Wugeng Liang, Dick Nagaki, Yu-Lun Fang, David West
  • Patent number: 11969724
    Abstract: The invention relates to a reactor system for oxidative coupling of methane (OCM), comprising: reactor system for oxidative coupling of methane (OCM), comprising: (a) an inlet configured to receive a reactant mixture; (b) a reaction chamber having an upstream end and a downstream end such that the reaction chamber extends from the upstream end to the downstream end, and the reaction chamber comprises a catalyst bed having a catalyst composition having at least two catalyst components: (i) a low selectivity catalyst component; and (ii) a high selectivity catalyst component; and (c) an outlet configured to recover a C2+ hydrocarbon product mixture from the reactor system; wherein the reactor system is configured such that the reactant mixture substantially contacts the high selectivity catalyst component prior to contacting the low selectivity catalyst component. The invention further describes a process for the production of C2+ hydrocarbon product mixture using the present reactor system.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: April 30, 2024
    Assignee: SABIC Global Technologies B.V.
    Inventors: Wugeng Liang, Hector Perez, Pankaj Gautam Singh, David West
  • Publication number: 20240042405
    Abstract: A reactor (12) and method for the conversion of hydrocarbons utilizes a reactor (12) having a unique feed assembly (56) that creates an inwardly spiraling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a conduit (46) with a constricted neck portion or nozzle (52). At least a portion of the swirling gas mixture forms a thin, annular mixed gas flow layer immediately adjacent to the conduit (46). A portion of the swirling gas mixture is combusted as the swirling gas mixture passes through the conduit (46) for conversion of hydrocarbons.
    Type: Application
    Filed: October 19, 2023
    Publication date: February 8, 2024
    Inventors: Sreekanth Pannala, Vladimir Shtern, Lei Chen, David West
  • Patent number: 11826749
    Abstract: A pyrolysis reactor (12) and method for the pyrolysis of hydrocarbon gases (e.g., methane) utilizes a pyrolysis reactor (12) having a unique burner assembly (44) and pyrolysis feed assembly (56) that creates an inwardly spiraling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a burner conduit (46) with a constricted neck portion or nozzle (52). At least a portion of the swirling gas mixture forms a thin, annular mixed gas flow layer immediately adjacent to the burner conduit (46). A portion of the swirling gas mixture is combusted as the swirling gas mixture passes through the burner conduit (46) and a portion of combustion products circulates in the burner assembly (44). This provides conditions suitable for pyrolysis of hydrocarbons or light alkane gas, such as methane or natural gas.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: November 28, 2023
    Assignee: SABIC Global Technologies B.V.
    Inventors: Sreekanth Pannala, Vladimir Shtern, Lei Chen, David West
  • Publication number: 20230347309
    Abstract: The invention relates to a reactor system for oxidative coupling of methane (OCM), comprising: reactor system for oxidative coupling of methane (OCM), comprising: (a) an inlet configured to receive a reactant mixture; (b) a reaction chamber having an upstream end and a downstream end such that the reaction chamber extends from the upstream end to the downstream end, and the reaction chamber comprises a catalyst bed having a catalyst composition having at least two catalyst components: (i) a low selectivity catalyst component; and (ii) a high selectivity catalyst component; and (c) an outlet configured to recover a C2+ hydrocarbon product mixture from the reactor system; wherein the reactor system is configured such that the reactant mixture substantially contacts the high selectivity catalyst component prior to contacting the low selectivity catalyst component. The invention further describes a process for the production of C2+ hydrocarbon product mixture using the present reactor system.
    Type: Application
    Filed: December 7, 2021
    Publication date: November 2, 2023
    Inventors: Wugeng LIANG, Hector PEREZ, Pankaj Gautam SINGH, David WEST
  • Patent number: 11753357
    Abstract: A multilayer supported oxidative coupling of methane (OCM) catalyst composition (alpha-Al2O3 support, first single oxide layer, one or more mixed oxide layers, optional second single oxide layer) characterized by formula AaZbEcDdOx/alpha-Al2O3; A is alkaline earth metal; Z is first rare earth element; E is second rare earth element; D is redox agent/third rare earth element; the first, second, third rare earth element are not the same; a=1.0; b=0.1-10.0; c=0.1-10.0; d=0-10.0; x balances oxidation states; first single oxide layer (Zb1Ox1, b1=0.1-10.0; x1 balances oxidation states) contacts alpha-Al2O3 support and one or more mixed oxide layers; one or more mixed oxide layers (Aa2Zb2Ec2Dd2Ox2, a2=1.0; b2=0.1-10.0; c2=0.1-10.0; d2=0-10.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: September 12, 2023
    Assignee: SABIC Global Technologies B.V.
    Inventors: Wugeng Liang, Azim Ali, Hector Perez, Jae Hyung Kim, Pankaj Gautam, David West
  • Publication number: 20230271157
    Abstract: The invention is directed to a chemical reactor (100) having (a) two or more gas reactor elements (12) with each gas reactor element (12) having (i) a first reaction chamber (38), and (ii) a feed assembly unit (36), (b) a second reaction chamber (20) coupled with each of the two or more gas reactor elements (12) and configured to independently receive two or more product streams from the two or more gas reactor elements (12); and optionally, (c) a gas converging section (40) located downstream to the second reaction chamber (20). The invention is further directed to a method of producing chemical products using the chemical reactor (100) of the present invention.
    Type: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Inventors: Lei Chen, Sreekanth Pannala, David West
  • Publication number: 20230256406
    Abstract: A reactor and method for the conversion of hydrocarbon gases utilizes a reactor (12, 312, 412, 512, 612, 712) having a unique feed assembly with an original vortex combustion chamber (40, 340, 436, 536, 636, 736), a diverging conduit (48, 348, 448, 548, 648, 748), and a cylindrical reactor chamber (40, 340, 436, 536, 636, 736). This design creates a compact combustion zone and an inwardly swirling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a diverging conduit (48, 348, 448, 548, 648, 748). The feed streams can be introduced into the reactor at any angle (perpendicular, axial, or something between, or a combination of the above forms) with swirling flow components. This provides conditions suitable for efficient cracking of hydrocarbons, such as ethane, to form olefins.
    Type: Application
    Filed: July 6, 2021
    Publication date: August 17, 2023
    Inventors: Lei Chen, Sreekanth Pannala, David West
  • Patent number: 11679370
    Abstract: The invention is directed to a chemical reactor (100) having (a) two or more gas reactor elements (12) with each gas reactor element (12) having (i) a first reaction chamber (38), and (ii) a feed assembly unit (36), (b) a second reaction chamber (20) coupled with each of the two or more gas reactor elements (12) and configured to independently receive two or more product streams from the two or more gas reactor elements (12); and optionally, (c) a gas converging section (40) located downstream to the second reaction chamber (20). The invention is further directed to a method of producing chemical products using the chemical reactor (100) of the present invention.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: June 20, 2023
    Assignee: SABIC Global Technologies B.V.
    Inventors: Lei Chen, Sreekanth Pannala, David West
  • Patent number: D991487
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: July 4, 2023
    Inventor: David West