Patents by Inventor George Gu

George Gu 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).

  • Publication number: 20240034648
    Abstract: An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.
    Type: Application
    Filed: October 8, 2023
    Publication date: February 1, 2024
    Applicant: Evoqua Water Technologies LLC
    Inventors: Joshua Griffis, George Gu, Simon P. Dukes, Michael J. Shaw
  • Patent number: 11802063
    Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 31, 2023
    Assignee: Evoqua Water Technologies LLC
    Inventors: George Gu, Simon Paul Dukes, Joshua Griffis, Michael Shaw
  • Publication number: 20230130585
    Abstract: Methods of treating a waste stream containing perfluoroalkyl substances (PFAS) are disclosed. The methods include directing the waste stream to a dilution compartment of an electrochemical separation device, directing a treatment stream to a concentration compartment of the electrochemical separation device, and applying a voltage across the electrodes to produce a dilute stream substantially free of the PFAS and a concentrate stream. At least one of the waste stream and the treatment stream comprises a water miscible organic solvent. Methods of concentrating PFAS from a wastewater are also disclosed. PFAS concentration systems are also disclosed. The systems include a column comprising an ion exchange resin and an electrochemical separation device having a dilution compartment fluidly connected to an outlet of the column. Methods of facilitating treatment of a waste stream containing PFAS are also disclosed.
    Type: Application
    Filed: March 23, 2021
    Publication date: April 27, 2023
    Applicant: Evoqua Water Technologies LLC
    Inventors: SIMON P. DUKES, GEORGE GU, SAVVAS HADJIKYRIACOU, YANG CHEN
  • Publication number: 20230018120
    Abstract: A water treatment system comprises an actinic radiation reactor, an electrochemical cell configured to produce hydrogen peroxide and having an outlet in fluid communication between a source of electrolyte and the actinic radiation reactor, and a source of oxygen in communication with an inlet of the electrochemical cell.
    Type: Application
    Filed: July 31, 2020
    Publication date: January 19, 2023
    Applicant: Evoqua Water Technologies LLC
    Inventors: JOSHUA GRIFFIS, BENJAMIN SATTERFIELD, SIMON DUKES, GEORGE GU, YANG CHEN
  • Publication number: 20220314788
    Abstract: A heavy-duty vehicle having a chassis, a front steering axle, and first and second rear axles. The first rear axle may include a first rear axle housing, a first carrier housing, and a second carrier housing and the second rear axle may include a second axle housing, a third carrier housing, and a fourth carrier housing. A first permanent magnet motor may be coupled to the first carrier housing and engaged with a first gearset, and a second permanent magnet motor may be coupled to the second carrier housing and engaged with a second gearset. A first induction motor may be coupled to the third carrier housing and engaged with a third gearset, and a second induction motor may be coupled to the fourth carrier housing and engaged with a fourth gearset.
    Type: Application
    Filed: March 28, 2022
    Publication date: October 6, 2022
    Inventors: Qunlong Dong, Jay A. De Veny, III, George Gu
  • Patent number: 11414330
    Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and reversing polarity of the anode and the cathode responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to reverse polarity responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 16, 2022
    Assignee: Evoqua Water Technologies LLC
    Inventors: Simon Paul Dukes, George Gu, Joshua Griffis, Michael Shaw
  • Publication number: 20220062829
    Abstract: A monovalent selective ion exchange membrane is disclosed. The membrane includes a polymeric microporous substrate, a cross-linked ion-transferring polymeric layer on a surface of the substrate, and a charged functionalizing layer covalently bound to the ion-transferring layer by an acrylic group. A method of producing a monovalent selective cation exchange membrane is also disclosed. The method may include chemically adsorbing an acrylic intermediate layer comprising a chlorosulfonated methacrylate group to a cross-linked ion-transferring polymeric layer on a surface of a polymeric microporous substrate, aminating the chlorosulfonated methacrylate group to attach an amine group layer, and functionalizing the amine group layer with a charged compound layer to produce the cation exchange membrane.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 3, 2022
    Inventors: George Gu, SAVVAS HADJIKYRIACOU, Simon P. DUKES, Michael J. SHAW
  • Publication number: 20210395911
    Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and reversing polarity of the anode and the cathode responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to reverse polarity responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.
    Type: Application
    Filed: March 6, 2018
    Publication date: December 23, 2021
    Applicant: Evoqua Water Technologies LLC
    Inventors: Simon Paul Dukes, George Gu, Joshua Griffis, Michael Shaw
  • Publication number: 20210340343
    Abstract: Methods of producing an ion exchange membrane support are disclosed. The methods include saturating a polymeric microporous substrate with a charged monomer solution comprising at least one functional monomer, a cross-linking agent, and an effective amount of at least one photopolymerization initiator and polymerizing the at least one functional monomer by exposing the saturated polymeric microporous substrate to ultraviolet light under conditions effective to cross-link the at least one functional monomer and produce the ion exchange membrane support. Methods of producing a monovalent selective ion exchange membrane are also disclosed. The methods include functionalizing an exterior surface of the ion exchange membrane support with a charged compound layer, drying the ion exchange membrane support and soaking the ion exchange membrane support in a solution comprising an acid or a base for an amount of time effective to produce the monovalent selective ion exchange membrane.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 4, 2021
    Applicant: Evoqua Water Technologies LLC
    Inventors: George Gu, Simon P. Dukes, Savvas Hadjikyriacou, Michael Shaw
  • Publication number: 20210139351
    Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.
    Type: Application
    Filed: March 6, 2018
    Publication date: May 13, 2021
    Applicant: Evoqua Water Technologies LLC
    Inventors: George Gu, Simon Paul Dukes, Joshua Griffis, Michael Shaw
  • Publication number: 20210130966
    Abstract: An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.
    Type: Application
    Filed: March 6, 2018
    Publication date: May 6, 2021
    Applicant: Evoqua Water Technologies LLC
    Inventors: Joshua Griffis, George Gu, Simon P. Dukes
  • Patent number: 10694749
    Abstract: The present invention provides an insecticide formulation, the insecticide formulation comprising a Bacillus thuringiensis (BT) strain; a floating agent and a disintegration agent bound on a substrate. The substrate has a density greater than 1.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 30, 2020
    Assignee: Wellmark International
    Inventors: George Gu, Keith Haas, Jeanne Witte
  • Patent number: 10645932
    Abstract: The present invention provides an extended release insecticide formulation, the formulation comprising: an insecticide on a substrate; a lipophilic wax, wherein the insecticide is incorporated into the wax forming a matrix; a release retarding polymer embedded in the matrix; and a rate extending polymer embedded in the matrix. Methods of making the formulation and use of the formulation are also provided.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: May 12, 2020
    Assignee: WELLMARK INTERNATIONAL
    Inventors: George Gu, Min Xie, Keith Haas, Doug Vangundy
  • Patent number: 10645931
    Abstract: The present invention provides an extended release insecticide formulation, the formulation comprising: an insecticide on a substrate; a lipophilic wax, wherein the insecticide is incorporated into the wax forming a matrix; a release retarding polymer in the matrix; and a rate extending polymer embed the matrix. Methods of making the formulation and use of the formulation are also provided.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: May 12, 2020
    Assignee: WELLMARK INTERNATIONAL
    Inventors: George Gu, Min Xie, Keith Haas, Doug Vangundy
  • Publication number: 20190263697
    Abstract: A water treatment system for producing potable water and water for irrigation from saline water, the system includes an electrodialysis apparatus including one or more monovalent selective membranes and having an inlet fluidly connectable to a source of water to be treated, a diluate outlet, and a concentrate outlet, a nanofiltration apparatus positioned downstream of the electrodialysis apparatus and having an inlet fluidly connectable to the diluate outlet of the electrodialysis apparatus, a permeate outlet, and a retentate outlet, and an electrolyzer in fluid communication with one of the concentrate outlet and the retentate outlet, and configured to generate a product stream including one or more of chlorine gas, hypochlorite ion, sodium hydroxide, sulfuric acid, hydrochloric acid, or sodium hypochlorite.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Applicant: Evoqua Water Technologies LLC
    Inventors: Gary C. Ganzi, Joahua Griffis, Simon Dukes, Li-Shiang Liang, Darren Adrian Dale, Michael Shaw, Paul Beddoes, George Gu
  • Publication number: 20180325116
    Abstract: The present invention provides an extended release insecticide formulation, the formulation comprising: an insecticide on a substrate; a lipophilic wax, wherein the insecticide is incorporated into the wax forming a matrix; a release retarding polymer in the matrix; and a rate extending polymer embed the matrix. Methods of making the formulation and use of the formulation are also provided.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Applicant: Wellmark International
    Inventors: George Gu, Min Xie, Keith Haas, Doug Vangundy
  • Publication number: 20180168162
    Abstract: The present invention provides an extended release insecticide formulation, the formulation comprising: an insecticide on a substrate; a lipophilic wax, wherein the insecticide is incorporated into the wax forming a matrix; a release retarding polymer in the matrix; and a rate extending polymer embed the matrix. Methods of making the formulation and use of the formulation are also provided.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 21, 2018
    Applicant: WELLMARK INTERNATIONAL
    Inventors: GEORGE GU, Min Xie, Keith Haas, Doug Vangundy
  • Publication number: 20170360047
    Abstract: The present invention provides an insecticide formulation, the insecticide formulation comprising a Bacillus thuringiensis (BT) strain; a floating agent and a disintegration agent bound on a substrate. The substrate has a density greater than 1.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Applicant: Wellmark International
    Inventors: George GU, Keith HAAS, Jeanne WITTE
  • Patent number: 9254894
    Abstract: A subsea facility for hydrocarbon recovery in deep waters and methods of installation are provided. More specifically, the subsea facility equipment is on multiple modules equipped with a buoyancy system to allow the modules to sink to the sea floor. The modules can be attached and unattached to each other, thus allowing for a module to be raised to the surface for repairs without affecting the rest of the subsea facility.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: February 9, 2016
    Assignee: ConocoPhillips Company
    Inventors: Zhihao George Gu, Chad A. Petrash, Ivica T. Grgas, Amal C. Phadke, Dominique P. Berta
  • Publication number: 20150225043
    Abstract: A subsea facility for hydrocarbon recovery in deep waters and methods of installation are provided. More specifically, the subsea facility equipment is on multiple modules equipped with a buoyancy system to allow the modules to sink to the sea floor. The modules can be attached and unattached to each other, thus allowing for a module to be raised to the surface for repairs without affecting the rest of the subsea facility.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 13, 2015
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Zhihao George GU, Chad A. PETRASH, Ivica T. GRGAS, Amal C. PHADKE, Dominique P. BERTA