Patents by Inventor Junzhong Li

Junzhong Li 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: 12290071
    Abstract: Peroxyformic acid compositions for removal of biofilm growth and other contaminants and impurities from industrial processing hard surfaces are disclosed. In particular, peroxyformic acid compositions may be dosed on site and/or generated in situ for the reduction and prevention of biofilms on the hard surfaces. Methods of employing the peroxyformic acid compositions for removal of biofilm growth and other impurities such as aldehydes and alcohols from industrial CO2 effluent are also disclosed which beneficially provide ambient biofilm control and break down more rapidly than other peracids, allowing for extended runs between CIP cleaning, including a reduction and/or elimination of cleaning of the scrubbers and other industrial surfaces.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: May 6, 2025
    Assignee: ECOLAB USA INC.
    Inventors: John Bolduc, Chris Nagel, Junzhong Li, Catherine Hanson, Peter Fernholz
  • Patent number: 12268210
    Abstract: Methods of generating performic acid by contacting aqueous oxidizing agent and aqueous formic acid source in liquid phase are disclosed. A system and apparatus for the in situ production of the performic acid chemistries is further disclosed. In particular, a continuous flow reactor is provided to generate performic acid at variable rates. Methods of employing the oxidizing biocide for various disinfection applications are also disclosed.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: April 8, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Paul R. Kraus, Benjamin Crew, Junzhong Li, David D. McSherry, Ramakrishnan Balasubramanian, Richard Staub, Ariel Chatman Kleczewski, Minh Tran, Catherine Hanson, Irwan Yunus, Jeffery D. Breshears, Brian Paul Brunner
  • Patent number: 12258310
    Abstract: Peroxyhydroxycarboxylic acid forming compositions and methods for forming peroxyhydroxycarboxylic acids, preferably in situ, using the peroxyhydroxycarboxylic acid forming compositions are disclosed. Methods of using the peroxyhydroxycarboxylic acids, including for treating a surface or a target in need of antimicrobial or sanitizing treatment are also disclosed. Particular applications of using odor-free, low volatility peroxyhydroxycarboxylic acid sanitizers for direct food contact are disclosed.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: March 25, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Allison Prideaux, Richard Staub
  • Patent number: 12252672
    Abstract: The present disclosure relates to rheology modified, low foaming aqueous antimicrobial compositions. The compositions are phase stable under acidic conditions, and do not need to be rinsed from the surface to which they are applied. The present disclosure further relates to methods of use thereof.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: March 18, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Steven J. Lange, Richard Staub, David D. McSherry
  • Patent number: 12253501
    Abstract: A composition, method and kit for quantifying the concentration of one peracid or the total concentration of two or more peracids in a water source are disclosed. In particular, an oxidation sensitive or peroxycarboxylic acid selective leuco dye is used to react only with one or more peroxycarboxylic acids in a water source but not with peroxide usually co-existing in the water source. Not only does the oxidation sensitive or peroxycarboxylic acid selective leuco dye react with peracid(s) but also the reaction generates a color species that can be used visually or through absorbance measurement to quantify the peracid concentration. The method disclosed here is not a titration method, it involves a simple mixing step. The kit or composition disclosed here does not utilize a catalyst, such as iodine.
    Type: Grant
    Filed: May 1, 2023
    Date of Patent: March 18, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Ramakrishnan Balasubramanian, Junzhong Li
  • Patent number: 12241046
    Abstract: Stabilized peroxide-containing compositions stabilized with urea and urea/chelator stabilizer blends are provided. The compositions are particularly suitable for, but not limited to, cleaning applications on surfaces within food and beverage industries which may require the use of materials that are acceptable for incidental food/food products/feed contact. Further, the stabilized compositions are particularly suitable for applications requiring materials that are generally regarded as safe (GRAS) or for applications where non-GRAS materials must be minimized. Methods of stabilizing peroxide-containing compositions and methods of using the compositions are also provided.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: March 4, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Chris Nagel, Junzhong Li
  • Publication number: 20250049026
    Abstract: Biocide compositions efficacious for biofilm control, including treatment and/or prevention, comprising the synergistic combination of biocide(s) with a source of hydronium ions are disclosed. Methods of deactivating, removing and/or preventing biofilms with the compositions are also provided.
    Type: Application
    Filed: October 23, 2024
    Publication date: February 13, 2025
    Inventors: Junzhong Li, Joshua Luedtke, Jesse David Hines, John Paul Koehl, Richard Staub
  • Patent number: 12203056
    Abstract: The present invention relates to novel sulfoperoxycarboxylic acid compounds, and methods for making and using them. The sulfoperoxycarboxylic compounds of the invention are storage stable, water soluble and have low to no odor. Further, the compounds of the present invention can be formed from non-petroleum based renewable materials. The compounds of the present invention can be used as antimicrobials, and bleaching agents. The compounds of the present invention are also suitable for use as coupling agents.
    Type: Grant
    Filed: October 20, 2023
    Date of Patent: January 21, 2025
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Richard K. Staub, David D. McSherry, Keith G. LaScotte, Steven J. Lange, Frank Everts
  • Patent number: 12171225
    Abstract: Biocide compositions efficacious for biofilm control, including treatment and/or prevention, comprising the synergistic combination of biocide(s) with a source of hydronium ions are disclosed. Methods of deactivating, removing and/or preventing biofilms with the compositions are also provided.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: December 24, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Joshua Luedtke, Jesse David Hines, John Paul Koehl, Richard Staub
  • Publication number: 20240417651
    Abstract: Liquid peroxycarboxylic acid laundry compositions, namely bleaching and disinfecting compositions combining mixed peroxycarboxylic acids to provide synergistic efficacy are disclosed. Methods of using the liquid peroxycarboxylic acid laundry compositions for low temperatures and a use pH with detergent and water from about 6 to about 10 are also disclosed. Beneficially, the liquid peroxycarboxylic acid laundry compositions and methods of using the same do not include sulfonated peroxycarboxylic acids and sulfonated carboxylic acid, such as peroxy sulfonated oleic acid/sulfonated oleic acid (PSOA/SOA).
    Type: Application
    Filed: August 30, 2024
    Publication date: December 19, 2024
    Inventors: Junzhong Li, Allison Prideaux, David Dotzauer, Jonathan P. Fast, Richard K. Staub
  • Publication number: 20240415116
    Abstract: Stabilized peroxycarboxylic acid compositions and the solid supported peracid stabilizers are provided. Methods of producing the solid supported peracid stabilizers are provided. The solid supported peracid stabilizers and the stable peroxycarboxylic acid compositions are particularly suitable for use in sanitizing equipment and surfaces to reduce yeasts, spores and bacteria, including those having contact with food, food products and/or components thereof, which require or benefit from infection control suitable for direct contact with such food sources.
    Type: Application
    Filed: August 27, 2024
    Publication date: December 19, 2024
    Inventors: Ashish Dhawan, Junzhong Li, David D. McSherry, Carter M. Silvernail, Chris Nagel
  • Publication number: 20240409848
    Abstract: Disclosed are hard water-resistant antimicrobial composition for use in cleaning surfaces, wherein the compositions comprise a carboxylic acid, an alkyl sulfate, and a sulfonate. Further disclosed are methods of using the same, wherein the antimicrobial compositions provides an at least a 3-log reduction of a microbial population within 10 minutes of contact with the surface. Beneficially, the compositions are stable in hard water, do not require a rinse step, and leave little or no residue on treated surfaces.
    Type: Application
    Filed: April 2, 2024
    Publication date: December 12, 2024
    Inventors: Derrick Anderson, Junzhong Li, Rosalind Haas, Joshua Luedtke, Richard Staub
  • Publication number: 20240349720
    Abstract: Liquid antimicrobial compositions with yeasticidal and virucidal efficacy including at least one acid, an alkyl ether carboxylic acid, and an additional surfactant, wherein the use pH is less than about 5 are disclosed. The compositions provide effective alternatives to quaternary ammonium compounds while also beneficially providing yeasticidal efficacy in addition to broad antimicrobial and virucidal efficacy. Methods of using the liquid compositions are also disclosed.
    Type: Application
    Filed: April 2, 2024
    Publication date: October 24, 2024
    Inventors: Junzhong Li, Allison Prideaux, Sascha Locher, Derrick Anderson, Richard Staub, Jonathan Scott Killeen
  • Publication number: 20240341306
    Abstract: Peroxyformic acid compositions for treatment and removal of biofilm growth and mineral deposits on membranes for energy services applications are disclosed. In particular, peroxyformic acid compositions are generated in situ or on site generation for the reduction and prevention, of biofilms and the mitigation of mineral buildup on the membranes. The compositions according to the invention are compatible with the membranes under application of use conditions.
    Type: Application
    Filed: June 26, 2024
    Publication date: October 17, 2024
    Inventors: Junzhong Li, Cynthia Bunders, Richard Staub, Paul Frazer Schacht, Caleb Power, Ramakrishnan Balasubramanian, Robert J. Ryther, Catherine Hanson
  • Patent number: 12114656
    Abstract: Methods and systems for temperature-controlled, on-site generation of peracids, namely peroxycarboxylic acids and peroxycarboxylic acid forming compositions are disclosed. In particular, methods for using an adjustable biocide formulator or generator system overcome the limitations of temperature on the kinetics of the peracid generation and/or peracid decomposition inside an adjustable biocide formulator or generator system. The methods include the controlling of the temperature of at least one raw starting material, namely water, to improve upon methods of on-site generation of peracids. The methods allow for the generation of user-selected chemistry without regard to the ambient temperatures of the raw starting materials and/or the biocide formulator or generator system.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: October 15, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Brandon Herdt, Richard Staub, Thomas C. Rustad, Junzhong Li, David D. McSherry, Paul R. Kraus, Richard Walsh
  • Patent number: 12104144
    Abstract: Liquid peroxycarboxylic acid laundry compositions, namely bleaching and disinfecting compositions combining mixed peroxycarboxylic acids to provide synergistic efficacy are disclosed. Methods of using the liquid peroxycarboxylic acid laundry compositions for low temperatures and a use pH with detergent and water from about 6 to about 10 are also disclosed. Beneficially, the liquid peroxycarboxylic acid laundry compositions and methods of using the same do not include sulfonated peroxycarboxylic acids and sulfonated carboxylic acid, such as peroxy sulfonated oleic acid/sulfonated oleic acid (PSOA/SOA).
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: October 1, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Allison Prideaux, David Dotzauer, Jonathan P. Fast, Richard Staub
  • Patent number: 12096768
    Abstract: Stabilized peroxycarboxylic acid compositions and the solid supported peracid stabilizers are provided. Methods of producing the solid supported peracid stabilizers are provided. The solid supported peracid stabilizers and the stable peroxycarboxylic acid compositions are particularly suitable for use in sanitizing equipment and surfaces to reduce yeasts, spores and bacteria, including those having contact with food, food products and/or components thereof, which require or benefit from infection control suitable for direct contact with such food sources.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: September 24, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Ashish Dhawan, Junzhong Li, David D. McSherry, Carter M. Silvernail, Chris Nagel
  • Publication number: 20240306637
    Abstract: Stabilized peroxycarboxylic acid compositions are provided. The stable peroxycarboxylic acid compositions are particularly suitable for use in sanitizing equipment and surfaces to reduce yeasts, spores and bacteria, including those having contact with food, food products and/or components thereof, which require or benefit from infection control suitable for direct contact with such food sources are provided.
    Type: Application
    Filed: May 28, 2024
    Publication date: September 19, 2024
    Inventors: Chris Nagel, Junzhong Li, Keith G. LaScotte
  • Patent number: 12058999
    Abstract: Stabilized peroxycarboxylic acid compositions are provided. The stable peroxycarboxylic acid compositions are particularly suitable for use in sanitizing equipment and surfaces to reduce yeasts, spores and bacteria, including those having contact with food, food products and/or components thereof, which require or benefit from infection control suitable for direct contact with such food sources are provided.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 13, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Chris Nagel, Junzhong Li, Keith G. LaScotte
  • Patent number: 12059002
    Abstract: Peroxyformic acid compositions for treatment and removal of biofilm growth and mineral deposits on membranes for energy services applications are disclosed. In particular, peroxyformic acid compositions are generated in situ or on site generation for the reduction and prevention, of biofilms and the mitigation of mineral buildup on the membranes. The compositions according to the invention are compatible with the membranes under application of use conditions.
    Type: Grant
    Filed: April 7, 2023
    Date of Patent: August 13, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Junzhong Li, Cynthia Bunders, Richard Staub, Paul Frazer Schacht, Caleb Power, Ramakrishnan Balasubramanian, Robert J. Ryther, Catherine Hanson