Patents by Inventor Rahul Patil

Rahul Patil 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: 12319662
    Abstract: The disclosure pertains to a plant and process for the coupled production of urea and melamine. In an embodiment, a lean carbamate solution is supplied from the melamine production section to a recovery section of the urea production section. In an embodiment, enriched carbamate solution from the urea production section is supplied to an off-gas condenser of the melamine production section.
    Type: Grant
    Filed: November 22, 2023
    Date of Patent: June 3, 2025
    Assignee: Stamicarbon B.V.
    Inventor: Rahul Patil
  • Patent number: 12319646
    Abstract: The disclosure pertains to a urea production process wherein carbamate in a medium pressure (MP) urea solution is decomposed in a tube bundle of a high pressure (HP) carbamate condenser and resulting gas is condensed in indirect heat exchange with urea solution to be heated and wherein a high pressure (HP) stripper is preferably operated with relatively low stripping efficiency.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: June 3, 2025
    Assignee: STAMICARBON B.V.
    Inventor: Rahul Patil
  • Publication number: 20250170548
    Abstract: The disclosure pertains to an ammonium nitrate reactor with a first type static mixer in the mixing zone upstream of the tube bundle and/or a second type static mixer downstream of the tube bundle.
    Type: Application
    Filed: September 9, 2024
    Publication date: May 29, 2025
    Applicant: Stamicarbon B.V.
    Inventors: Rahul PATIL, Lambertus Wilhelmus GEVERS, Solomon Assefa WASSIE, Michail TSOPOZIDIS
  • Patent number: 12240800
    Abstract: Embodiments pertain to a urea plant and to the operation of a urea plant in a reduced load mode. In embodiments, two evaporators in parallel are used, connected to a finishing section respectively to a melamine plant.
    Type: Grant
    Filed: November 22, 2023
    Date of Patent: March 4, 2025
    Assignee: Stamicarbon B.V.
    Inventors: Branislav Manic, Rahul Patil
  • Patent number: 12186725
    Abstract: The disclosure pertains to a high pressure carbamate condensation apparatus for a urea plant, a urea plant, and a urea production method. The apparatus comprises a first U-shaped tube bundle arranged around a second U-shaped tube bundle.
    Type: Grant
    Filed: May 12, 2023
    Date of Patent: January 7, 2025
    Assignee: Stamicarbon B.V.
    Inventors: Rahul Patil, Lambertus Wilhelmus Gevers, Markus Theodorus Marie Michaël Wagemans
  • Publication number: 20240425449
    Abstract: The disclosure pertains to a urea production process wherein carbamate in a medium pressure (MP) urea solution is decomposed in a tube bundle of a high pressure (HP) carbamate condenser and resulting gas is condensed in indirect heat exchange with urea solution to be heated and wherein a high pressure (HP) stripper is preferably operated with relatively low stripping efficiency.
    Type: Application
    Filed: February 21, 2023
    Publication date: December 26, 2024
    Applicant: STAMICARBON B.V.
    Inventor: Rahul Patil
  • Patent number: 12146512
    Abstract: A hydraulic method for opening and closing a ram and operating a wedge lock and unlock mechanism using only an open port and a close port. To close the rams and lock the rams in a closed position, hydraulic fluid is directed to the close port where the rams close and then are locked in the closed position. To open the rams, hydraulic fluid is direct to the open port whereupon the wedge locks are unlocked. Afterward the wedge locks are unlocked, hydraulic fluid is utilized to open the rams.
    Type: Grant
    Filed: October 17, 2023
    Date of Patent: November 19, 2024
    Assignee: WORLDWIDE OILFIELD MACHINE, INC.
    Inventors: Prashant N Akhare, Rahul Patil
  • Patent number: 12139448
    Abstract: The disclosure pertains to urea production with, in series, an MP carbamate condenser for condensing at least urea synthesis section off-gas, gas/liquid separation giving a gas stream and a liquid stream, and a second carbamate condenser receiving off-gas from melamine production and said liquid stream.
    Type: Grant
    Filed: October 13, 2023
    Date of Patent: November 12, 2024
    Assignee: Stamicarbon B.V.
    Inventors: Solomon Assefa Wassie, Rahul Patil
  • Patent number: 12134590
    Abstract: The disclosure pertains to a coupled plant process for the production of urea and melamine, with a urea synthesis section with HP CO2 stripping, and with a part of the CO2 feed supplied to a recovery section.
    Type: Grant
    Filed: November 22, 2023
    Date of Patent: November 5, 2024
    Assignee: Stamicarbon B.V.
    Inventors: Rahul Patil, Johannes Henricus Mennen, Lambertus Wilhelmus Gevers
  • Publication number: 20240327358
    Abstract: The disclosure pertains to a plant and process for the coupled production of urea and melamine. In an embodiment, a lean carbamate solution is supplied from the melamine production section to a recovery section of the urea production section. In an embodiment, enriched carbamate solution from the urea production section is supplied to an off-gas condenser of the melamine production section.
    Type: Application
    Filed: November 22, 2023
    Publication date: October 3, 2024
    Inventor: Rahul PATIL
  • Publication number: 20240327553
    Abstract: A method may include: introducing a water-based drilling fluid comprising an aqueous base fluid and a branched polyvinyl alcohol shale stabilizer into a drill string; extending a wellbore using the drill string through a subterranean formation comprising a shale; and allowing the branched polyvinyl alcohol shale stabilizer to interact with the shale to at least partially inhibit the shale.
    Type: Application
    Filed: March 1, 2023
    Publication date: October 3, 2024
    Applicant: Halliburton Energy Services, Inc.
    Inventors: V. Ramireddy Devarapalli, Sunita S. Kadam, Rahul Patil, William Cecil Pearl, JR.
  • Publication number: 20240270685
    Abstract: The disclosure pertains to a coupled plant process for the production of urea and melamine, with a urea synthesis section with HP CO2 stripping, and with a part of the CO2 feed supplied to a recovery section.
    Type: Application
    Filed: November 22, 2023
    Publication date: August 15, 2024
    Applicant: Stamicarbon B.V.
    Inventors: Rahul PATIL, Johannes Henricus MENNEN, Lambertus Wilhelmus GEVERS
  • Publication number: 20240262788
    Abstract: The disclosure pertains to urea production with, in series, an MP carbamate condenser for condensing at least urea synthesis section off-gas, gas/liquid separation giving a gas stream and a liquid stream, and a second carbamate condenser receiving off-gas from melamine production and said liquid stream.
    Type: Application
    Filed: October 13, 2023
    Publication date: August 8, 2024
    Applicant: Stamicarbon B.V.
    Inventors: Solomon Assefa WASSIE, Rahul PATIL
  • Publication number: 20240262789
    Abstract: Embodiments pertain to a urea plant and to the operation of a urea plant in a reduced load mode. In embodiments, two evaporators in parallel are used, connected to a finishing section respectively to a melamine plant.
    Type: Application
    Filed: November 22, 2023
    Publication date: August 8, 2024
    Applicant: Stamicarbon B.V.
    Inventors: Branislav MANIC, Rahul PATIL
  • Publication number: 20240261751
    Abstract: The disclosure pertains to a high pressure carbamate condensation apparatus for a urea plant, a urea plant, and a urea production method. The apparatus comprises a first U-shaped tube bundle arranged around a second U-shaped tube bundle.
    Type: Application
    Filed: May 12, 2023
    Publication date: August 8, 2024
    Applicant: Stamicarbon B.V.
    Inventors: Rahul PATIL, Lambertus Wilhelmus GEVERS, Markus Theodorus Marie Michaël WAGEMANS
  • Publication number: 20240255009
    Abstract: A hydraulic method for opening and closing a ram and operating a wedge lock and unlock mechanism using only an open port and a close port. To close the rams and lock the rams in a closed position, hydraulic fluid is directed to the close port where the rams close and then are locked in the closed position. To open the rams, hydraulic fluid is direct to the open port whereupon the wedge locks are unlocked. Afterward the wedge locks are unlocked, hydraulic fluid is utilized to open the rams.
    Type: Application
    Filed: October 17, 2023
    Publication date: August 1, 2024
    Inventors: PRASHANT N AKHARE, RAHUL PATIL
  • Patent number: 12041302
    Abstract: Various embodiments of the present disclosure provide a method and a system for obtaining enriched channel tracking data from a set-top box (STB). Channel information associated with channels viewed by at least one viewer on a display device associated with the STB is accessed. It is determined whether the microphone has captured one or more voice signals in vicinity of the STB prior to detection of an occurrence of a predefined event. Further, voice biometric data is extracted from each captured voice signal to configure viewer demographic data when the microphone has captured the one or more voice signals. The viewer demographic data is configured based at least on identifying viewer information corresponding to the voice biometric data. The viewer demographic data is correlated with channel tracking data corresponding to the detected predefined event to generate a payload. The data packet including the payload is transmitted to a remote server.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: July 16, 2024
    Assignee: STAR INDIA PRIVATE LIMITED
    Inventors: Kaushik Das, Rahul Patil, Tejaswi Bonda, Akhtar Jalaludheen, Nidhi Chadha
  • Publication number: 20240117181
    Abstract: A polycarbonate composition includes particular amounts of a bisphenol A polycarbonate homopolymer, a particular polycarbonate-siloxane copolymer and a phosphazene flame retardant Methods of making the composition and articles including the composition are also described.
    Type: Application
    Filed: June 22, 2021
    Publication date: April 11, 2024
    Inventors: Anna SANGREGORIO, Mark Adrianus Johannes VAN DER MEE, Tony FARRELL, Laura Mely RAMIREZ, Peter VOLLENBERG, Rahul PATIL
  • Patent number: 11912649
    Abstract: Disclosed is a method for the removal of ammonia from the off-gas of a finishing section of a urea production plant. Also disclosed is a corresponding urea plant, and a method of accordingly modifying a pre-existing urea plant. In a scrubbing section, the off-gas is brought into contact with an acidic scrubbing liquid so as to provide a scrubbed off-gas and a utilized scrubbing liquid comprising ammonium salt. The method specifies an evaporation section, which is part of the urea plant that produces urea melt, that is divided into first and second stages. The first stage is part of the urea melt production plant. The second stage decoupled, as regards recirculation of liquids other than the urea product stream, from the urea melt production plant. This is accomplished by sending utilized scrubbing liquid that contains ammonium salts to the second stage evaporation section, and by sending condensed vapours from said second stage evaporation section to said scrubbing section.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: February 27, 2024
    Assignee: Stamicarbon B.V.
    Inventors: Rahul Patil, Branislav Manic, Petrus Anna Maria Robertus Simons
  • Patent number: 11905234
    Abstract: A method for the removal of ammonia from the off-gas of a finishing section of a urea production plant, a corresponding urea plant, and a method of accordingly modifying a pre-existing urea plant. In a scrubbing section, off-gas is brought into contact with acidic scrubbing liquid to provide a scrubbed off-gas and a utilized scrubbing liquid comprising ammonium salt. The method specifies an evaporation section, which is part of the urea plant that produces urea melt, that is divided into first and second stages. The first stage is part of the urea melt production plant. The second stage is decoupled, as regards recirculation of liquids other than the urea product stream, from the urea melt production plant. This is accomplished by sending utilized scrubbing liquid containing ammonium salts to the second stage evaporation section, and condensed vapours from said second stage evaporation section to said scrubbing section.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: February 20, 2024
    Assignee: STAMICARBON B.V.
    Inventors: Rahul Patil, Branislav Manic, Petrus Anna Maria Robertus Simons