Patents by Inventor Ashish Dhawan

Ashish Dhawan 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: 20200239339
    Abstract: Disclosed herein are the methods of using a cationic alkyl polyglycoside in a fouling control composition to reduce microbial and/biofilm growth in a water system. The disclosed methods or compositions are found to be effective than those methods or compositions including commonly used single quaternary compounds for reducing microbial or biofilm growth in water systems.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Inventors: Ashish Dhawan, Kun Xiong, Carter M. Silvernail
  • Publication number: 20200199048
    Abstract: Described are methods and compositions for inhibiting polymerization of a monomer (e.g., styrene) composition using a hydroxylated quinone antipolymerant. The hydroxylated quinone antipolymerant can be used with little or no nitroxyl group containing antipolymerant yet still provide excellent antipolymerant activity in a monomer-containing composition.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Inventors: Jonathan Masere, Russell P. Watson, Ashish Dhawan
  • Publication number: 20200172831
    Abstract: Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. Also disclosed are detergent compositions and methods of cleaning articles and/or membranes using the surfactants herein. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.
    Type: Application
    Filed: December 2, 2019
    Publication date: June 4, 2020
    Inventors: Ashish Dhawan, Carter Martin Silvernail, Sukhwan Soontravanich, Keith Allen Monk, Michael L. Braden, Paige Mary Owens, Kerrie Elizabeth Walters, Ali Marie Bichler, Izabela A. Owsik, David Myers
  • Publication number: 20200140653
    Abstract: A cationic polymer salt composition is provided that includes a reaction product derived from reaction of a polyamine or a polyalkyleneimine and a substituted alkyl trialkyl quaternary ammonium salt. Also provided are surfactant compositions. The compositions may also include carriers, such as water, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, monoethyleneglycol, an ethyleneglycol monobutyl ether, and hexylene glycol.
    Type: Application
    Filed: December 30, 2019
    Publication date: May 7, 2020
    Applicant: ECOLAB USA, INC.
    Inventors: Zhengang Zong, Kun Xiong, Jeffrey R. Cramm, Xiaodong Huang, Jeremy Moloney, Ashish Dhawan
  • Publication number: 20200109112
    Abstract: Disclosed are sulfide-based compounds which are a product of a Michael addition reaction between a sulfur-containing donor group and an unsaturated hydrocarbon moiety. The sulfide-based compounds may be used in compositions and methods for inhibiting corrosion.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Jeremy Moloney, Ashish Dhawan, Carter Silvernail
  • Publication number: 20200102513
    Abstract: The present invention generally relates to nonylphenol-free alkoxylated 4-(alkyloxy)phenol/aldehyde resins and processes for making alkoxylated 4-(alkyloxy)phenol/aldehyde resins. The invention also relates to methods of breaking emulsions of oil and water comprising the dosing of an effective amount of an emulsion breaker composition into a stable emulsion to destabilize the emulsion, wherein the emulsion breaker composition comprises an alkoxylated 4-(alkyloxy)phenol/aldehyde resin.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: Omer Gul, Michael L. Braden, Ashish Dhawan
  • Publication number: 20200080206
    Abstract: Disclosed are oleyl propylenediamine-based compounds used in compositions and methods for inhibiting corrosion. The method comprises introducing into a fluid source a composition comprising one or more oleyl propylenediamine-based compounds comprising Formula I: wherein Y1, Y2, and Y3 independently are hydrogen or a substituent of Formula (II): wherein V is —O— or —NH—, W is optionally present and is a linear or branched C1-10 aliphatic group, X is —H, —NZ3+, —COOH, —SO3H, —OSO3H2, —PO3H, —OPO3H2, or a salt thereof, each Z independently is hydrogen or a linear or branched C1-20 aliphatic group optionally interrupted or substituted with one or more oxygen atoms, and R is hydrogen or methyl, provided that at least one of Y1, Y2, or Y3 is a substituent of Formula (II).
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Inventors: Zhengang Zong, Roger W. Fowee, Joe L. Schwartz, Ashish Dhawan, Jeremy Moloney
  • Publication number: 20200071840
    Abstract: The present invention generally relates to the use of aryl sulfonium salts as a corrosion inhibitor in a water injection system, a hydrocarbon extraction system, or a hydrocarbon production system. Treating oilfield injection and produced fluids with aryl sulfonium salts can significantly decrease microbially induced corrosion. Thus, these aryl sulfonium salts can be effectively used as corrosion inhibitors in oilfield fluids.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 5, 2020
    Inventors: Brett Geissler, Ashish Dhawan, Alicia Dinges, Carter Martin Silvernail
  • Publication number: 20200071205
    Abstract: Disclosed herein are the water clarification compositions and method of using the disclosed water clarification compositions for clarifying a water system or waste water source. Specifically, the disclosed compositions comprise and methods use multiple charged cationic or anionic compounds that are derived from polyamines through an aza-Michael addition with an activated olefin having an ionic group. The disclosed water clarification methods or compositions are found to be more effective than those methods or compositions including commonly used single quaternary compounds for reducing turbidity in water systems or waste water sources.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: ASHISH DHAWAN, CARTER M. SILVERNAIL, AARTHI NARAYANAN, JASON ROBERT BURNEY
  • Publication number: 20200071261
    Abstract: Disclosed herein are the multiple charged cationic or anionic compounds, methods of making thereof, and articles or compositions comprising thereof. The disclosed multiple charged cationic or anionic compounds are derived from polyamines through two reactions: an aza-Michael addition with an activated olefin having an ionic group and a ring-opening reaction with an epoxide.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Inventors: Ashish Dhawan, Carter M. Silvernail
  • Publication number: 20200068885
    Abstract: Disclosed herein are the methods of using specific di-cationic or multiple charged cationic compounds, which are derived from primary amine or polyamines through an aza-Michael addition with an ?, ?-unsaturated carbonyl compound or from polyamines through both an aza-Michael addition with an ?, ?-unsaturated carbonyl compound and a ring-opening reaction with an epoxide, in a fouling control composition to reduce microbial and/biofilm growth in a water system. The disclosed methods or compositions are found to be more effective than those methods or compositions including commonly used single quaternary compounds for reducing microbial or biofilm growth in water systems.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Inventors: ASHISH DHAWAN, Kun Xiong, CARTER M. SILVERNAIL, Zhengang Zong
  • Publication number: 20200071602
    Abstract: Disclosed herein are the methods of using specific multiple charged cationic compounds, which are derived from polyamines through an aza-Michael addition with an ?,?-unsaturated carbonyl compound, in a clay treatment composition to reduces clay swelling, clay migration, and sludge formation in a subterranean formation in oil and gas operations. The disclosed methods or compositions are found to be more effective than those methods or compositions including commonly used for reducing clay swelling, clay migration, and sludge formation.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: ASHISH DHAWAN, KELLEN HARKNESS, CARTER M. SILVERNAIL, KEITH A. MONK
  • Publication number: 20200071265
    Abstract: Disclosed herein is a novel class of multiple charged cationic or anionic compounds that are derived from an aza-Michael Addition reaction between a polyamine (Michael donor) and an activated olefin (Michael acceptor), methods of making the same, and use thereof. Also disclosed herein are the methods of using multiple charged cationic or anionic compounds disclosed herein in a reverse emulsion breaker composition to break reverse emulsion commonly found in a produced fluid in oil and gas operations. The disclosed REB methods or compositions are found to be more effective than those methods or compositions including commonly used for oil/solid and water separation.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: ASHISH DHAWAN, KEITH A. MONK, CARTER M. SILVERNAIL
  • Patent number: 10563042
    Abstract: A cationic polymer salt composition is provided that includes a reaction product derived from reaction of a polyamine or a polyalkyleneimine and a substituted alkyl trialkyl quaternary ammonium salt. Also provided are surfactant compositions. The compositions may also include carriers, such as water, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, monoethyleneglycol, an ethyleneglycol monobutyl ether, and hexylene glycol.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 18, 2020
    Assignee: ECOLAB USA INC.
    Inventors: Zhengang Zong, Kun Xiong, Jeffrey R. Cramm, Xiaodong Huang, Jeremy Moloney, Ashish Dhawan
  • Patent number: 10450500
    Abstract: Disclosed herein are polymer compositions useful in high temperature enhanced oil recovery applications. The polymer compositions include at least 20 mol % of an N,N-dialkyl-N,N-diallylammonium salt and further have a net negative charge. The polymer compositions provide polymer dispersions in water or brine having stable viscosity when maintained at temperatures of 100° C. and above for at least 2 days.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: October 22, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Peter E. Reed, William J. Andrews, Ashish Dhawan
  • Publication number: 20190316064
    Abstract: The present disclosure provides methods and compositions for cleaning soils from surfaces of processing equipment. The soils include aqueous based emulsion polymers that need to be removed from associated polymerization processing equipment. The equipment may be used in the production of paint or coating components. A cleaning composition is heated and applied to the equipment to be cleaned. Cleaning of interior surfaces can be performed using clean-in-place methods. The cleaning composition can include combinations of organic solvent, alkanolamine, water, chelating agent, alkali metal hydroxide, or surfactant.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 17, 2019
    Inventors: Mark Raymond Altier, John Wilhelm Bolduc, Ashish Dhawan
  • Publication number: 20190201858
    Abstract: Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.
    Type: Application
    Filed: December 20, 2018
    Publication date: July 4, 2019
    Inventors: Michael L. Braden, Ashish Dhawan, Wesley L. Whipple, Pious Kurian
  • Publication number: 20190202962
    Abstract: The present disclosure generally relates to nonylphenol-free alkoxylated 4-(alkyloxy)phenol/aldehyde resins and processes for making alkoxylated 4-(alkyloxy)phenol/aldehyde resins. The disclosure also relates to methods of breaking emulsions of oil and water comprising the dosing of an effective amount of an emulsion breaker composition into a stable emulsion to destabilize the emulsion, wherein the emulsion breaker composition comprises an alkoxylated 4-(alkyloxy)phenol/aldehyde resin.
    Type: Application
    Filed: December 20, 2018
    Publication date: July 4, 2019
    Inventors: Michael L. Braden, Ashish Dhawan, Jonathan Masere
  • Patent number: 10301553
    Abstract: Uses of aryl sulfonium salts for lowering sulfide concentrations and for preventing growth of microbes in a water injection system, a hydrocarbon extraction system, or a hydrocarbon production system are disclosed. Treating oilfield injection and produced fluids containing high levels of microbes with aryl sulfonium salts can significantly decrease the amount of hydrogen sulfide produced, which can be used to measure sulfidogenesis. The treatment can also decrease the number of active microbes in the injection and produced fluids. Thus, these aryl sulfonium salts can be effectively used as inhibitors of hydrogen sulfide generation and as biocides in oilfield fluids.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: May 28, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Brett Geissler, Ashish Dhawan
  • Publication number: 20190062187
    Abstract: Disclosed herein are the methods of using di-cationic or di-anionic compounds, which are derived from primary amine through an aza-Michael addition with an activated olefin, in a corrosion control composition to mitigate corrosion of a surface in a water system. The disclosed methods or compositions are found to be more effective than those methods or compositions including commonly used single quaternary compounds for mitigating corrosion for a metal surface in water systems.
    Type: Application
    Filed: August 29, 2018
    Publication date: February 28, 2019
    Inventors: Ashish Dhawan, Jeremy Moloney, Carter M. Silvernail, Boyd A. Laurent