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: 9462806
    Abstract: The present invention relates to compositions, methods of making and their use as cleaning composition and/or antimicrobial agent, for example in the field of cold aseptic filling (CAF), that are effective at lower concentration, having improved wetting and rinsing properties, wherein the liquid composition comprises a mixture of: a) a C6 to C22 sulfoperoxycarboxylic acid, b) a C1 to C4 percarboxylic acid, c) a C5 to C10 percarboxylic acid, d) a peroxide agent, e) a liquid; wherein the composition comprises free sulfocarboxylic acid, free C1 to C4 carboxylic acid and free C5 to C10 carboxylic acid, wherein the weight ratio of C6 to C22 sulfocarboxylic acid to C6 to C22 sulfoperoxycarboxylic acid is about 0.1:1 to about 25:1.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: October 11, 2016
    Assignee: Ecolab USA Inc.
    Inventors: Julia Tiekemeier, Petra Vogt, Junzhong Li, David McSherry
  • Publication number: 20160237031
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Application
    Filed: February 11, 2016
    Publication date: August 18, 2016
    Inventors: David D. McSherry, Richard Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Publication number: 20160200595
    Abstract: The present invention relates generally to stable percarboxylic acid compositions comprising, inter alia, at least two stabilizing agents, and various uses for water treatments, including water treatments in connection with oil- and gas-field operations. The present invention also relates to slick water compositions and gel based compositions that comprise stable percarboxylic acid compositions and the use thereof in oil- and gas-field operations.
    Type: Application
    Filed: March 21, 2016
    Publication date: July 14, 2016
    Applicant: Ecolab USA Inc.
    Inventors: Junzhong LI, David MCSHERRY, Allison BREWSTER, Richard STAUB, Renato DE PAULA, John Wilhelm BOLDUC, Robert J. RYTHER, Victor V. KEASLER
  • Publication number: 20160176735
    Abstract: Methods of employing peroxycarboxylic acid compositions for the prevention of scale formation and in some embodiments the removal of existing scale are disclosed. In particular, the scale inhibition properties of percarboxylic acids of varying chain lengths including C1-C22 provide effective scale inhibition and scale removal or destruction. Methods of employing peroxycarboxylic acid compositions for scale inhibition and/or removal are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. The methods provide suitable scale inhibition replacements and/or additives to known scale inhibitors.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: RAMAKRISHNAN BALASUBRAMANIAN, BRIAN EPPS, JUNZHONG LI, RICHARD STAUB, VICTOR KEASLER
  • Publication number: 20160176814
    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: December 17, 2015
    Publication date: June 23, 2016
    Inventors: RAMAKRISHNAN BALASUBRAMANIAN, JUNZHONG LI, RICHARD STAUB, VICTOR KEASLER, BRIAN BENNETT, ALLISON BREWSTER
  • Publication number: 20160176815
    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: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: JUNZHONG LI, ALLISON BREWSTER, RICHARD STAUB, STEVEN J. LANGE, TAZ CHERITU, JONATHAN P. FAST
  • Patent number: 9358314
    Abstract: The present invention relates to specially selected catalase enzymes and their use in reducing hydrogen peroxide in applications, and particularly in aseptic packaging applications.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 7, 2016
    Assignee: Ecolab USA Inc.
    Inventors: Brandon L. Herdt, Joshua P. Magnuson, David D. McSherry, Junzhong Li, Krista L. Owens
  • Patent number: 9359295
    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: November 7, 2011
    Date of Patent: June 7, 2016
    Assignee: ECOLAB USA, INC.
    Inventors: Junzhong Li, Richard K. Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Publication number: 20160150779
    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: February 9, 2016
    Publication date: June 2, 2016
    Inventors: JUNZHONG LI, DAVID D. MCSHERRY, RICHARD STAUB
  • Publication number: 20160137535
    Abstract: Methods for the use of peracid compositions having decreased hydrogen peroxide concentration and a UV-blocking agent for various water treatments, including oil- and gas-field operations, and/or other aseptic treatments are disclosed. In numerous aspects, peracetic acid is the preferred peracid and is treated with a peroxide-reducing agent to substantially reduce the hydrogen peroxide content.
    Type: Application
    Filed: January 25, 2016
    Publication date: May 19, 2016
    Inventors: Victor Keasler, Renato De Paula, Junzhong Li, David D. McSherry, Brandon Herdt, Richard Staub, Robert J. Ryther
  • Patent number: 9321664
    Abstract: The present invention relates generally to stable percarboxylic acid compositions comprising, inter alia, at least two stabilizing agents, and various uses for water treatments, including water treatments in connection with oil- and gas-field operations. The present invention also relates to slick water compositions and gel based compositions that comprise stable percarboxylic acid compositions and the use thereof in oil- and gas-field operations.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 26, 2016
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, David McSherry, Allison Brewster, Richard Staub, Renato De Paula, John Wilhelm Bolduc, Robert J. Ryther, Victor V. Keasler
  • Patent number: 9290448
    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: June 27, 2014
    Date of Patent: March 22, 2016
    Assignee: ECOLAB USA, INC.
    Inventors: Junzhong Li, Richard Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Patent number: 9288982
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: March 22, 2016
    Assignee: Ecolab USA, Inc.
    Inventors: David D. McSherry, Richard Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe
  • Patent number: 9288992
    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: Grant
    Filed: December 29, 2014
    Date of Patent: March 22, 2016
    Assignee: Ecolab USA, Inc.
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Patent number: 9253978
    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: June 7, 2013
    Date of Patent: February 9, 2016
    Assignee: Ecolab USA, Inc.
    Inventors: Junzhong Li, Richard Staub, David D. McSherry, Keith G. Lascotte, Steven J. Lange, Frank Everts
  • Patent number: 9242879
    Abstract: Methods for the use of peracid compositions having decreased hydrogen peroxide concentration for various water treatments, including oil- and gas-field operations, and/or other aseptic treatments are disclosed. In numerous aspects, peracetic acid is the preferred peracid and is treated with a peroxide-reducing agent to substantially reduce the hydrogen peroxide content. Methods for using the treated peracid compositions for treatment of drilling fluids, frac fluids, flow back waters and disposal waters are also disclosed for improving water condition, reducing oxidizing damage associated with hydrogen peroxide and/or reducing bacteria infestation.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 26, 2016
    Assignee: Ecolab USA Inc.
    Inventors: Victor Keasler, Renato De Paula, Junzhong Li, David D. McSherry, Brandon Herdt, Richard Staub, Robert J. Ryther
  • Patent number: 9167814
    Abstract: The present invention relates to compositions including surfactant peroxycarboxylic acid, methods for making these compositions, and methods for reducing the population of a microorganism.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: October 27, 2015
    Assignee: ECOLAB USA, INC.
    Inventors: Steven J. Lange, Junzhong Li
  • Publication number: 20150164071
    Abstract: The present invention relates to compositions, methods of making and their use as cleaning composition and/or antimicrobial agent, for example in the field of cold aseptic filling (CAF), that are effective at lower concentration, having improved wetting and rinsing properties, wherein the liquid composition comprises a mixture of: a) a C6 to C22 sulfoperoxycarboxylic acid, b) a C1 to C4 percarboxylic acid, c) a C5 to C10 percarboxylic acid, d) a peroxide agent, e) a liquid; wherein the composition comprises free sulfocarboxylic acid, free C1 to C4 carboxylic acid and free C5 to C10 carboxylic acid, wherein the weight ratio of C6 to C22 sulfocarboxylic acid to C6 to C22 sulfoperoxycarboxylic acid is about 0.1:1 to about 25:1.
    Type: Application
    Filed: April 16, 2012
    Publication date: June 18, 2015
    Applicant: ECOLAB USA INC.
    Inventors: Julia Tiekemeier, Petra Vogt, Junzhong Li, David McSherry
  • Publication number: 20150110894
    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: December 29, 2014
    Publication date: April 23, 2015
    Inventors: Junzhong Li, David D. McSherry, Richard Staub
  • Publication number: 20150111967
    Abstract: The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 23, 2015
    Inventors: David D. McSherry, Richard Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe