Patents by Inventor Rajendra Ghimire

Rajendra Ghimire 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: 20220259112
    Abstract: An aqueous composition comprises at least one oxidizable sulfur-based compound. A concentrated extract of the aqueous composition includes a gas chromatography/mass spectrometry-detectable amount of contaminating refinery hydrocarbons but the aqueous composition is free of refinery odor when stored for at least 24 hours at room temperature and 60% relative humidity. The aqueous compositions are prepared from a gas stream obtained from a petroleum refinery process, a coke oven, or the like, containing at least about 4 mol %, more specifically about 15 mol %, of hydrogen sulfide (H2S) and/or sulfur dioxide (SO2) and/or ammonia (NH3), and at least about 0.1 mol % of contaminating refinery hydrocarbons. The aqueous compositions are suitable for use in fertilizers, mining and industrial applications.
    Type: Application
    Filed: July 6, 2020
    Publication date: August 18, 2022
    Applicant: Tessenderlo Group NV
    Inventors: Scott Waite, Harry Charles Kominski, Rajendra Ghimire, Jeroen van Cauwenbergh
  • Patent number: 11407932
    Abstract: Polymers and fracturing fluid compositions including a base fluid, an effective amount of a hydratable polymer composition including one or more gel-forming hydratable polymers, a friction reducer composition including hydrolyzed or partially hydrolyzed hydrolyzable polymers and copolymers, a cross-linking composition in an amount sufficient to crosslink the one or more gel-forming hydratable polymers to form crosslinked structures within the fracturing fluid composition with or without a proppant and methods including combining an aqueous fluid and an oleaginous fluid to prepare an invert emulsion comprising a polymerizable composition, degassing the invert emulsion under an extensional flow regime through an elongated passageway of an extender and thereby removing oxygen to produce a degassed invert emulsion and compositions and methods including a hydratable additive concentrate comprising a hydratable additive that is at least substantially hydrated and a hydrating liquid, wherein the hydratable additive
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: August 9, 2022
    Assignee: PfP Industries, LLC
    Inventors: Asoke Kumar Deysarkar, Michael Joseph Callanan, Robert Ray McDaniel, Brian James Keola DeCaires, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Madhukar Chetty
  • Patent number: 11248163
    Abstract: Fracturing fluid compositions including a base fluid including a high TDS produced and/or flow back water, brackish water, RO reject water, clear brine, and mixtures thereof with or without added fresh water and systems, and methods for making and using same, where the method includes: (a) adding a first buffer to adjust the pH of a base fluid to an acidic pH, (b) adding a hydratable polymer or polymer slurry to the base fluid to form a hydratable polymer fracturing fluid, (c) adding a cross-linking composition to the hydratable polymer fracturing fluid to form a pre-cross-linked fracturing fluid, and (d) if needed, adding a second buffer to the pre-cross-linked fracturing fluid to adjust the pH of the pre-cross-linked fracturing fluid to form a viscosified fracturing fluid having a crosslinked structure.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: February 15, 2022
    Assignee: PfP INDUSTRIES LLC
    Inventors: Asoke Kumar Deysarkar, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Michael J. Callanan, Robert Ray McDaniel, Madhukar Chetty
  • Publication number: 20210222054
    Abstract: Polymers and fracturing fluid compositions including a base fluid, an effective amount of a hydratable polymer composition including one or more gel-forming hydratable polymers, a friction reducer composition including hydrolyzed or partially hydrolyzed hydrolyzable polymers and copolymers, a cross-linking composition in an amount sufficient to crosslink the one or more gel-forming hydratable polymers to form crosslinked structures within the fracturing fluid composition with or without a proppant and methods including combining an aqueous fluid and an oleaginous fluid to prepare an invert emulsion comprising a polymerizable composition, degassing the invert emulsion under an extensional flow regime through an elongated passageway of an extender and thereby removing oxygen to produce a degassed invert emulsion and compositions and methods including a hydratable additive concentrate comprising a hydratable additive that is at least substantially hydrated and a hydrating liquid, wherein the hydratable additive
    Type: Application
    Filed: November 16, 2020
    Publication date: July 22, 2021
    Inventors: Asoke Kumar Deysarkar, Michael Joseph Callanan, IV, Robert Ray McDaniel, James Keola DeCaires, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Madhukar Chetty
  • Publication number: 20210214604
    Abstract: Fracturing fluid compositions including a base fluid including a high TDS produced and/or flow back water, brackish water, RO reject water, clear brine, and mixtures thereof with or without added fresh water and systems, and methods for making and using same, where the method includes: (a) adding a first buffer to adjust the pH of a base fluid to an acidic pH, (b) adding a hydratable polymer or polymer slurry to the base fluid to form a hydratable polymer fracturing fluid, (c) adding a cross-linking composition to the hydratable polymer fracturing fluid to form a pre-cross-linked fracturing fluid, and (d) if needed, adding a second buffer to the pre-cross-linked fracturing fluid to adjust the pH of the pre-cross-linked fracturing fluid to form a viscosified fracturing fluid having a crosslinked structure.
    Type: Application
    Filed: November 3, 2020
    Publication date: July 15, 2021
    Inventors: Asoke Kumar Deysarkar, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Michael Joseph Callanan, IV, Robert Ray McDaniel, Madhukar Chetty
  • Patent number: 10870791
    Abstract: Fracturing fluid compositions including a base fluid including a high TDS produced and/or flow back water, brackish water, RO reject water, clear brine, and mixtures thereof with or without added fresh water and systems, and methods for making and using same, where the method includes: (a) adding a first buffer to adjust the pH of a base fluid to an acidic pH, (b) adding a hydratable polymer or polymer slurry to the base fluid to form a hydratable polymer fracturing fluid, (c) adding a cross-linking composition to the hydratable polymer fracturing fluid to form a pre-cross-linked fracturing fluid, and (d) if needed, adding a second buffer to the pre-cross-linked fracturing fluid to adjust the pH of the pre-cross-linked fracturing fluid to form a viscosified fracturing fluid having a crosslinked structure.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: December 22, 2020
    Assignee: PfP Industries LLC
    Inventors: Asoke Deysarkar, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Michael J. Callanan, Robert McDaniel, Madhukar Chetty
  • Publication number: 20190100692
    Abstract: Fracturing fluid compositions including a base fluid including a high TDS produced and/or flow back water, brackish water, RO reject water, clear brine, and mixtures thereof with or without added fresh water and systems, and methods for making and using same, where the method includes: (a) adding a first buffer to adjust the pH of a base fluid to an acidic pH, (b) adding a hydratable polymer or polymer slurry to the base fluid to form a hydratable polymer fracturing fluid, (c) adding a cross-linking composition to the hydratable polymer fracturing fluid to form a pre-cross-linked fracturing fluid, and (d) if needed, adding a second buffer to the pre-cross-linked fracturing fluid to adjust the pH of the pre-cross-linked fracturing fluid to form a viscosified fracturing fluid having a crosslinked structure.
    Type: Application
    Filed: August 13, 2018
    Publication date: April 4, 2019
    Inventors: Asoke Deysarkar, Nikhil Patel, Nathalie Rasolomiarantsoa, James Nguyen, Rajendra Ghimire, Michael J. Callanan, Robert McDaniel