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: 10834924
    Abstract: The present invention relates generally to peroxyformic acid forming compositions, methods for forming peroxyformic acid, preferably in situ, using the peroxyformic acid forming compositions. The present invention also relates to the peroxyformic acid formed by the above compositions and methods. The present invention further relates to the uses of the peroxyformic acid, preferably in situ, for treating a surface or a target. The present invention further relates to methods for treating a biofilm using peroxyformic acid, including peroxyformic acid generated in situ.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 17, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Allison Brewster, Richard Staub, Steven J. Lange, Taz Cheritu, Jonathan P. Fast, Catherine Hanson
  • Patent number: 10827751
    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: February 7, 2019
    Date of Patent: November 10, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Brandon Herdt, Richard Staub, Thomas C. Rustad, Junzhong Li, David D. McSherry, Paul R. Kraus, Richard Walsh
  • Publication number: 20200323205
    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: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    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
  • Publication number: 20200276620
    Abstract: Peroxyformic acid compositions for removal of biofilm growth and mineral deposits on membranes 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: May 18, 2020
    Publication date: September 3, 2020
    Inventors: Junzhong Li, Cynthia Bunders, Richard K. Staub, PAUL FRAZER SCHACHT, Caleb Power
  • Publication number: 20200255775
    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: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Junzhong Li, Richard K. Staub, David D. McSherry, Keith G. LaScotte, Steven J. Lange, Frank Everts
  • Patent number: 10737302
    Abstract: Peroxyformic acid compositions for removal of biofilm growth and mineral deposits on membranes 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: December 16, 2016
    Date of Patent: August 11, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Cynthia Bunders, Richard Staub, Paul Frazer Schacht, Caleb Power
  • Patent number: 10729131
    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: November 7, 2018
    Date of Patent: August 4, 2020
    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: 10709131
    Abstract: The present invention relates generally to peroxyformic acid forming compositions, methods for forming peroxyformic acid, preferably in situ, using the peroxyformic acid forming compositions. The present invention also relates to the peroxyformic acid formed by the above compositions and methods. The present invention further relates to the uses of the peroxyformic acid, preferably in situ, for treating a surface or a target. The present invention further relates to methods for treating a biofilm using peroxyformic acid, including peroxyformic acid generated in situ.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: July 14, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Allison Brewster, Richard Staub, Steven J. Lange, Taz Cheritu, Jonathan P. Fast
  • Patent number: 10669512
    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: March 29, 2019
    Date of Patent: June 2, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Richard K. Staub, David D. McSherry, Keith G. LaScotte, Steven J. Lange, Frank Everts
  • Publication number: 20200163329
    Abstract: A disinfectant wipe is provided including a substrate that is substantially free of polyamides, and an acid anionic disinfectant is adsorbed to the substrate such that the disinfectant readily releases from the substrate to allow at least 65% delivery of the disinfectant when wiped on a surface. The substrate may be a woven, nonwoven, knit fabric, a foam, sponge or film composition and may be formed from polyester, polypropylene, nylon, cotton, rayon, acrylic, or combinations thereof. The acid anionic disinfectant has a pH below 7, below 5, below 3 and below 2. The substrate used to prepare the disinfectant wipe is not pretreated with the disinfectant or a release composition before applying the disinfectant. That is, the disinfectant is not applied and re-applied to ensure release onto a surface. In an embodiment of the invention acid anionic disinfectant is an antimicrobial agent.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 28, 2020
    Inventors: David D. McSherry, Junzhong Li, Richard K. Staub, Joy G. Herdt, Sherri L. Tischler
  • Publication number: 20200157046
    Abstract: The present invention relates generally to methods for forming peroxyformic acid, comprising contacting formic acid with hydrogen peroxide. The methods for forming peroxyformic acid can include adding formic acid with a relatively lower concentration of hydrogen peroxide, or adding formic acid to a peroxycarboxylic acid composition or forming composition to react with hydrogen peroxide in the compositions. The present invention also relates to peroxyformic acid formed by the above methods. The present invention further relates to the uses of peroxyformic acid for treating a variety of targets, e.g., target water, including target water used in connection with oil- and gas-field operations. The present invention further relates to methods for reducing or removing H2S or iron sulfide in the treated water source, improving clarity of the treated water source, or reducing the total dissolved oxygen or corrosion in the treated water source, using peroxyformic acid, including peroxyformic acid generated in situ.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Ramakrishnan Balasubramanian, Junzhong Li, Richard Staub, Victor Keasler, Brian Bennett, Allison Brewster
  • Publication number: 20200146285
    Abstract: Highly acidic, stabilized peroxycarboxylic acid compositions are disclosed as having both improved antimicrobial efficacy in comparison to conventional peroxyoctanoic acid and peroxyacetic acid compositions for sanitizing applications, and improved transport and shipping stability. In particular, low odor and low/no VOC compositions having dual functionality as both acid wash and sanitizing compositions are disclosed.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 14, 2020
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Publication number: 20200138022
    Abstract: Self-indicating chemistries are provided for visual detection by a user of efficacious levels of peroxycarboxylic acid concentrations in a solution produced in situ. The self-indicating chemistries include a combination of dyes providing a visual color indication, such as a tri-color indicator system, such as a yellow, green, and red color system indicating in situ threshold levels of peroxycarboxylic acid concentrations in a solution employing the self-indicating chemistry. Systems, kits and compositions for a quantitative assessment of an in situ perhydrolysis reaction to generate peroxycarboxylic acids are provided. Methods of use are further provided.
    Type: Application
    Filed: December 20, 2019
    Publication date: May 7, 2020
    Inventors: David D. McSherry, Junzhong Li, Richard Staub
  • Publication number: 20200140788
    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: Application
    Filed: January 7, 2020
    Publication date: May 7, 2020
    Inventors: Junzhong Li, Steven J. Lange, Richard K. Staub, David D. McSherry
  • Publication number: 20200060265
    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: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Chris Nagel, Junzhong Li, Keith G. LaScotte
  • Patent number: 10563153
    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: May 20, 2011
    Date of Patent: February 18, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Steven J. Lange, Richard K. Staub, David D. McSherry
  • Patent number: 10555523
    Abstract: Self-indicating chemistries are provided for visual detection by a user of efficacious levels of peroxycarboxylic acid concentrations in a solution produced in situ. The self-indicating chemistries include a combination of dyes providing a visual color indication, such as a tri-color indicator system, such as a yellow, green, and red color system indicating in situ threshold levels of peroxycarboxylic acid concentrations in a solution employing the self-indicating chemistry. Systems, kits and compositions for a quantitative assessment of an in situ perhydrolysis reaction to generate peroxycarboxylic acids are provided. Methods of use are further provided.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 11, 2020
    Assignee: Ecolab USA Inc.
    Inventors: David D. McSherry, Junzhong Li, Richard K. Staub
  • Publication number: 20200029560
    Abstract: The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Patent number: 10542751
    Abstract: The present invention relates generally to peroxyformic acid forming compositions, methods for forming peroxyformic acid, preferably in situ, using the peroxyformic acid forming compositions. The present invention also relates to the peroxyformic acid formed by the above compositions and methods. The present invention further relates to the uses of the peroxyformic acid, preferably in situ, for treating a surface or a target. The present invention further relates to methods for treating a biofilm using peroxyformic acid, including peroxyformic acid generated in situ.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: January 28, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Allison Brewster, Richard Staub, Steven J. Lange, Taz Cheritu, Jonathan P. Fast, Catherine Hanson
  • Patent number: 10524470
    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: June 14, 2017
    Date of Patent: January 7, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Cynthia Bunders, Richard Staub, Paul Frazer Schacht, Caleb Power, Ramakrishnan Balasubramanian, Robert J. Ryther, Catherine Hanson