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: 20240125753
    Abstract: An indicator composition can be used to measure calcium hardness within a sample of water from a process water system. The indicator composition can include a calcium indicator, a range extender, and a buffer. The indicator composition can accurately measure calcium concentrations within the sample of water at low, moderate, and high calcium levels, including at calcium concentrations of greater than 50 ppm. The indicator composition can measure calcium hardness without the use of masking agents at a pH of less than about 7.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Inventors: Hui Li, Bingzhi Chen, Ashish Dhawan
  • Publication number: 20240117264
    Abstract: Lubricity additives for fuels compositions are provided which are hydrocarbyl-containing oxygenated polyamines according to Formula I: wherein one or more of —R1, —R2, —R3, and —R4 is a carbon- and oxygen-containing group including a hydrophobic hydrocarbyl portion.
    Type: Application
    Filed: September 8, 2023
    Publication date: April 11, 2024
    Inventors: Ashish Dhawan, Nestor U. Soriano, JR., Karina Eureste
  • Publication number: 20240117273
    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: November 6, 2023
    Publication date: April 11, 2024
    Inventors: Ashish Dhawan, Carter Martin Silvernail, Sukhwan Soontravanich, Ali Marie Bichler
  • Patent number: 11939553
    Abstract: Disclosed are detergent compositions and methods of cleaning articles and/or membranes using the surfactants herein. Compounds, compositions, and methods for using these compounds and compositions in detergent or cleaning compositions are also provided. These compounds, compositions, and methods are particularly directed to cleaning compositions and methods that have advantageous cleaning properties at a pH of 7 or less. In particular, the compounds, compositions, and methods described herein can also be used as general surfactants in detergent compositions or in methods of cleaning articles or membranes.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: March 26, 2024
    Assignee: Ecolab USA Inc.
    Inventors: Sukhwan Soontravanich, Paige Mary Owens, Ashish Dhawan, Carter Martin Silvernail
  • Patent number: 11932795
    Abstract: Compositions and methods are provided for reducing, inhibiting, or preventing corrosion of a surface, the method comprising contacting an anticorrosion compound of Formula 1 with the surface, the anticorrosion compound of Formula 1 having a structure corresponding to: wherein R1, R2, R3, R4, and R5 are independently selected from hydrogen, hydroxyl, alkyl, alkoxyl, aryl, alkaryl, aralkyl, and —NR8R9; R6 and R7 are independently hydrogen, a substituted alkyl, substituted alkenyl, substituted aryl, substituted alkaryl, or substituted aralkyl, wherein at least one substituent is a hydroxyl or an ether; provided that at least one of R6 and R7 is other than hydrogen; R8 and R9 are independently hydrogen, unsubstituted alkyl, unsubstituted alkenyl, unsubstituted aryl, unsubstituted alkaryl, unsubstituted aralkyl, substituted alkyl, substituted alkenyl, or substituted alkaryl, wherein at least one substituent is a hydroxyl or an ether; or any two adjacent groups of R1, R2, R3, R4, and R5 form one or more ring st
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: March 19, 2024
    Assignee: Ecolab USA Inc.
    Inventors: Ashish Dhawan, Jeremy Moloney, Carter Martin Silvernail
  • Publication number: 20240084459
    Abstract: The present disclosure provides methods and compositions for inhibiting corrosion of metallic surfaces and dissolving iron sulfide deposits in aqueous systems. A method may include adding a composition to the aqueous medium. The composition may include malic acid or a salt thereof. The composition may optionally include an organic solvent and/or a corrosion inhibitor.
    Type: Application
    Filed: July 25, 2023
    Publication date: March 14, 2024
    Applicant: ECOLAB USA Inc.
    Inventors: Juan Manuel GARCIA, III, Ashish DHAWAN, Carter Martin SILVERNAIL, Maria DeJesus MARQUEZ, Emily Rebecca WOOD, Oussama ZENASNI, Ravindranath MUKKAMALA, Jonathan MASERE, Ramon COLORADO, JR.
  • Patent number: 11926543
    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: Grant
    Filed: February 28, 2022
    Date of Patent: March 12, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Ashish Dhawan, Carter M. Silvernail, Aarthi Narayanan, Jason Robert Burney
  • Patent number: 11897796
    Abstract: The present disclosure generally relates to compositions and uses of sulfidogenesis inhibitor compounds of Formulae 1 and 2 for preventing sulfidogenesis, i.e., the reduction reaction of a sulfur-containing compound by sulfur-utilizing prokaryotes that produce sulfide species such as hydrogen sulfide, during enhanced oil recovery processes. A method for inhibiting or decreasing microbial sulfide production by sulfur-utilizing prokaryotes includes addition of an effective amount of sulfidogenesis inhibitor compounds of Formulae 1 and 2 to the fluid that is injected into a sulfidogenic reservoir system during enhanced oil recovery. For example, the compounds can be used as sulfidogenesis inhibitors in a water injection system for use in a hydrocarbon extraction system or a hydrocarbon production system. Thus, these compositions can be effectively used as inhibitors of biogenic hydrogen sulfide generation in oilfield fluids.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: February 13, 2024
    Assignee: ChampionX USA Inc.
    Inventors: Timothy James Tidwell, Alicia Dinges, Ashish Dhawan
  • Patent number: 11866631
    Abstract: Described are compounds, compositions, and methods that include a nitrogen- and oxygen-containing aromatic compound, such as an aminophenol-based compound, which can be used for inhibiting polymerization of a monomer (e.g., styrene) composition. The compound includes a tertiary amine group wherein the nitrogen is attached to carbon-containing groups, and at least one of oxygen atom separated from the nitrogen by one or more carbon atoms. The antipolymerant can provide excellent antipolymerant activity in a monomer-containing composition.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 9, 2024
    Assignee: Ecolab USA Inc.
    Inventors: Jonathan Masere, Ashish Dhawan
  • Patent number: 11846029
    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: Grant
    Filed: June 27, 2022
    Date of Patent: December 19, 2023
    Assignee: Ecolab USA Inc.
    Inventors: Zhengang Zong, Roger W. Fowee, Joe L. Schwartz, Ashish Dhawan, Jeremy Moloney
  • Publication number: 20230383046
    Abstract: Disclosed herein are polymers formed by the condensation of bis(hydroxycarbyl)-aminophenolic compounds with aldehydes. The condensation polymers include one or more repeat units having bis(hydroxycarbyl)amino functionality. The polymers are useful as antifoulants, antipolymerants, rheology modifiers, dehazers, polymerization retardants, surfactants, or a combination of these in one or more industrial process streams.
    Type: Application
    Filed: August 10, 2023
    Publication date: November 30, 2023
    Inventors: Ashish Dhawan, Carter M. Silvernail
  • Publication number: 20230365882
    Abstract: Lubricity additives for hydrocarbon fuels are presented according to formula I: R1[(—O—R2)n-Q]p??(I) wherein p is 3 or greater; each n is independently selected from integers equal to 2 or greater; R1 is a C3-C20 aliphatic hydrocarbon group of valence p which is branched or linear and which is substituted or unsubstituted; each R2 is independently selected from C2-C20 divalent aliphatic or aromatic hydrocarbon groups which are branched or linear and which are substituted or unsubstituted; and each Q is independently selected from —NH2 or a moiety according to formula II: wherein each R3 is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted, providing that at least one Q is the moiety according to formula II.
    Type: Application
    Filed: July 19, 2023
    Publication date: November 16, 2023
    Inventors: Ashish Dhawan, Xiaojin Harry Li, Nestor U. Soriano, JR., Karina Eureste
  • Patent number: 11807830
    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: Grant
    Filed: August 15, 2022
    Date of Patent: November 7, 2023
    Assignee: Ecolab USA Inc.
    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: 20230339849
    Abstract: Polyhydroxy multiple charged ionic compounds that are the reaction product from either a single amidation and aza-Michael addition reaction or a two-step process of synthesizing a gluconamide intermediate and thereafter undergoing an aza-Michael Addition reaction between the gluconamide intermediate and an ionic monomer are disclosed. Methods of making the multiple charged ionic compounds, and uses thereof are also disclosed.
    Type: Application
    Filed: April 21, 2023
    Publication date: October 26, 2023
    Inventors: Ashish Dhawan, Carter M. Silvernail
  • Patent number: 11767393
    Abstract: Polymers are formed by the condensation of bis(hydroxycarbyl)-aminophenolic compounds with aldehydes. The condensation polymers include one or more repeat units having bis(hydroxycarbyl)amino functionality. The polymers are useful as antifoulants, antipolymerants, rheology modifiers, dehazers, polymerization retardants, surfactants, or a combination of these in one or more industrial process streams.
    Type: Grant
    Filed: October 21, 2021
    Date of Patent: September 26, 2023
    Assignee: Ecolab USA Inc.
    Inventors: Ashish Dhawan, Carter M. Silvernail
  • Publication number: 20230288395
    Abstract: The present disclosure relates to various testing methods that can be applied to oils, such as pyrolysis oils. Different testing methods can be used to determine the oxidative stability of an oil. The testing methods may also be used to differentiate between various oils and to determine the effectiveness of various antioxidants on the oxidative stability of an oil.
    Type: Application
    Filed: February 28, 2023
    Publication date: September 14, 2023
    Applicant: ECOLAB USA INC.
    Inventors: Ashish DHAWAN, Carter M. SILVERNAIL, Emily Rebecca WOOD, Kameswara VYAKARANAM, Daniel Robert DREYER, Karina EURESTE
  • Publication number: 20230278949
    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: May 12, 2023
    Publication date: September 7, 2023
    Inventors: Ashish Dhawan, Keith A. Monk, Carter M. Silvernail
  • Patent number: 11746302
    Abstract: Lubricity additives for hydrocarbon fuels are presented according to formula I: R1[(—O—R2)n-Q]p??(I) wherein p is 3 or greater; each n is independently selected from integers equal to 2 or greater; R1 is a C3-C20 aliphatic hydrocarbon group of valence p which is branched or linear and which is substituted or unsubstituted; each R2 is independently selected from C2-C20 divalent aliphatic or aromatic hydrocarbon groups which are branched or linear and which are substituted or unsubstituted; and each Q is independently selected from —NH2 or a moiety according to formula II: wherein each R3 is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted, providing that at least one Q is the moiety according to formula II.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: September 5, 2023
    Assignee: ECOLAB USA INC.
    Inventors: Ashish Dhawan, Xiaojin Harry Li, Nestor U. Soriano, Jr., Karina Eureste
  • Patent number: 11702586
    Abstract: 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 are provided. The disclosed methods or compositions are found to be more effective than those methods or compositions commonly used for reducing clay swelling, clay migration, and sludge formation.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: July 18, 2023
    Assignee: ChampionX USA Inc.
    Inventors: Ashish Dhawan, Kellen Harkness, Carter M. Silvernail, Keith A. Monk
  • Publication number: 20230220291
    Abstract: An anti-static fuel additive composition and method for using the composition to reduce or prevent buildup of electrostatic charge is described. The anti-static fuel additive composition comprises a polysulfone and a copolymer derived from reaction of an alkanolamine and a hydrocarbyl-substituted 4-membered to 7-memebered ring anhydride; for example, a hydrocarbyl-substituted succinic anhydride, a hydrocarbyl-substituted maleic anhydride, a hydrocarbyl-substituted phthalic anhydride, or a combination thereof.
    Type: Application
    Filed: January 11, 2023
    Publication date: July 13, 2023
    Inventors: Xiaojin Harry Li, Ashish Dhawan, Nestor Soriano, John Matthew Chudomel