Patents by Inventor Moinuddin Ahmed

Moinuddin Ahmed 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: 20260016527
    Abstract: A method for simulating failure testing of in-situ power grid hardware in real-time can include extracting, by one or more processors, parameters from power grid dynamics data to perform power grid simulation testing, sending, by the one or more processors, a reference to a power grid device, generating, by the one or more processors, stress information based on the reference via the power grid device to a power grid hardware, collecting, by the one or more processors, a response from the power grid hardware to the stress information, identifying, by the one or more processors, behaviors of the response, and extracting, by the one or more processors, a failure and aging model of the power grid hardware.
    Type: Application
    Filed: May 14, 2025
    Publication date: January 15, 2026
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Moinuddin AHMED, Zhenghong TU, Christopher STANKUS
  • Patent number: 11493548
    Abstract: A method for predicting failure parameters of semiconductor devices can include receiving a set of data that includes (i) characteristics of a sample semiconductor device, and (ii) parameters characterizing a stress condition. The method further includes extracting a plurality of feature values from the set of data and inputting the plurality of feature values into a trained model executing on the one or more processors, wherein the trained model is configured according to an artificial intelligence (AI) algorithm based on a previous plurality of feature values, and wherein the trained model is operable to output a failure prediction based on the plurality of feature values. Further, the method includes generating, via the trained model, a predicted failure parameter of the sample semiconductor device due to the stress condition.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: November 8, 2022
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Moinuddin Ahmed, John N. Hryn, Christopher Stankus
  • Publication number: 20220065919
    Abstract: A method for predicting failure parameters of semiconductor devices can include receiving a set of data that includes (i) characteristics of a sample semiconductor device, and (ii) parameters characterizing a stress condition. The method further includes extracting a plurality of feature values from the set of data and inputting the plurality of feature values into a trained model executing on the one or more processors, wherein the trained model is configured according to an artificial intelligence (AI) algorithm based on a previous plurality of feature values, and wherein the trained model is operable to output a failure prediction based on the plurality of feature values. Further, the method includes generating, via the trained model, a predicted failure parameter of the sample semiconductor device due to the stress condition.
    Type: Application
    Filed: July 23, 2021
    Publication date: March 3, 2022
    Inventors: Moinuddin Ahmed, John N. Hryn, Christopher Stankus
  • Patent number: 9388093
    Abstract: Systems for ionic liquid catalyzed hydrocarbon conversion comprise a reactor vessel, a mixing device in fluid communication with the reactor vessel, and at least one circulation loop in fluid communication with the reactor vessel and the mixing device. The mixing device may comprise an upper venturi, at least one feed injection component, and a lower venturi. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: July 12, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis, Donald Henry Mohr, Hye Kyung Cho Timken
  • Publication number: 20160001255
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion may comprise a modular reactor comprising a plurality of mixer modules. The mixer modules may be arranged in series. One or more feed modules may be disposed between the mixer modules. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 7, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Arthur William Etchells, III, Donald Henry Mohr, Hye Kyung Cho Timken, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis
  • Publication number: 20160002125
    Abstract: Systems for ionic liquid catalyzed hydrocarbon conversion comprise a reactor vessel, a mixing device in fluid communication with the reactor vessel, and at least one circulation loop in fluid communication with the reactor vessel and the mixing device. The mixing device may comprise an upper venturi, at least one feed injection component, and a lower venturi. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 7, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis, Donald Henry Mohr, Hye Kyung Cho Timken
  • Patent number: 8821805
    Abstract: This application provides a process unit for the production of alkylate gasoline, comprising: a) a nozzle having an orifice that dispenses one or more recirculated streams comprising ionic liquid catalyst into a chamber in the nozzle, b) a conduit for introducing a hydrocarbon feed stream comprising an olefin to the orifice at a close distance from the orifice; and c) a throat connecting the chamber in the nozzle to an alkylation zone. The process unit can have multiple Venturi nozzles.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 2, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20140183282
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Publication number: 20140183275
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: KRISHNIAH PARIMI, STEVEN XUQI SONG, MOINUDDIN AHMED, THIEN DUYEN THI NGUYEN
  • Patent number: 8697015
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 15, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Publication number: 20140024874
    Abstract: Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl3) from ionic liquids. After precipitation, the precipitated metal halides can be physically separated from the bulk ionic liquid. More effective precipitation can be achieved through cooling or the combination of cooling and the provision of metal halide seed crystals. The ionic liquids can be regenerated ionic liquid catalysts, which contain excess metal halides after regeneration. Upon removal of the excess metal halides, they can be reused in processes using ionic liquid catalysts, such as alkylation processes.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Publication number: 20130274533
    Abstract: Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl3) from ionic liquids. After precipitation, the precipitated metal halides can be physically separated from the bulk ionic liquid. More effective precipitation can be achieved through cooling or the combination of cooling and the provision of metal halide seed crystals. The ionic liquids can be regenerated ionic liquid catalysts, which contain excess metal halides after regeneration. Upon removal of the excess metal halides, they can be reused in processes using ionic liquid catalysts, such as alkylation processes.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Patent number: 8541638
    Abstract: Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl3) from ionic liquids. After precipitation, the precipitated metal halides can be physically separated from the bulk ionic liquid. More effective precipitation can be achieved through cooling or the combination of cooling and the provision of metal halide seed crystals. The ionic liquids can be regenerated ionic liquid catalysts, which contain excess metal halides after regeneration. Upon removal of the excess metal halides, they can be reused in processes using ionic liquid catalysts, such as alkylation processes.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: September 24, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Publication number: 20130142700
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 6, 2013
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Publication number: 20130066130
    Abstract: Ionic liquid alkylation processes may comprise contacting at least one hydrocarbon stream with an ionic liquid catalyst in an ionic liquid alkylation zone under ionic liquid alkylation conditions, cooling at least one of a reactor effluent and a hydrocarbon phase of the reactor effluent, and recycling the cooled reactor effluent or cooled hydrocarbon phase to the ionic liquid alkylation zone. Ionic liquid alkylation systems for performing ionic liquid catalyzed alkylation processes are also disclosed.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed
  • Publication number: 20130004378
    Abstract: This application provides a process unit for the production of alkylate gasoline, comprising: a) a nozzle having an orifice that dispenses one or more recirculated streams comprising ionic liquid catalyst into a chamber in the nozzle, b) a conduit for introducing a hydrocarbon feed stream comprising an olefin to the orifice at a close distance from the orifice; and c) a throat connecting the chamber in the nozzle to an alkylation zone. The process unit can have multiple Venturi nozzles.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Patent number: 8088338
    Abstract: Disclosed are a system and an apparatus for regenerating an ionic liquid catalyst, which has been deactivated by conjunct polymers during any type of reaction producing conjunct polymers as a by-product, for example, isoparaffin-olefin alkylation. The system and apparatus are designed such that solvent extraction of conjunct polymers, freed from the ionic liquid catalyst through its reaction with aluminum metal, occurs as soon as the conjunct polymers de-bond from the ionic liquid catalyst.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: January 3, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20110297618
    Abstract: A process for the filtration of an ionic liquid involves feeding an ionic liquid containing precipitated metal halides to a first filtering zone, which includes at least one first filter, to provide a partially filtered product. The process further includes subsequently feeding the partially filtered product to a second filtering zone, which includes at least one second filter having a smaller pore size than the at least one first filter, to provide a filtered product. A filter system capable of filtering precipitated metal halides from ionic liquid is also disclosed.
    Type: Application
    Filed: August 17, 2011
    Publication date: December 8, 2011
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Huping LUO, Moinuddin AHMED, Kris PARIMI, Bong-Kyu CHANG, Sara LINDSAY
  • Patent number: 8067656
    Abstract: A process for separating an ionic liquid from hydrocarbons employs a coalescer material having a stronger affinity for the ionic liquid than the hydrocarbons. The coalescer material can be a high surface area material having a large amount of contact area to which ionic liquid droplets dispersed in the hydrocarbons may adhere. The process includes feeding a mixture comprising ionic liquid droplets dispersed in hydrocarbons to a coalescer comprising the coalescer material. The process further includes a capture step involving adhering at least a portion of the ionic liquid droplets to the coalescer material to provide captured droplets and a coalescing step involving coalescing captured droplets into coalesced droplets. After the capture and coalescence steps, the coalesced droplets are allowed to fall from the coalescer material to separate the ionic liquid from the hydrocarbons and provide a hydrocarbon effluent.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: November 29, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20110282114
    Abstract: This application provides a process for the production of alkylate blending components, comprising introducing a hydrocarbon feed stream comprising an olefin to an orifice of a nozzle, at a close distance from the orifice; and wherein the nozzle dispenses a mixture of one or more recirculated streams and the hydrocarbon feed stream through a throat of the nozzle to make alkylate gasoline blending components. This application also provides a process unit for the production of alkylate gasoline, comprising: a) a nozzle having an orifice that dispenses one or more recirculated streams comprising ionic liquid catalyst into a chamber in the nozzle, b) a conduit for introducing a hydrocarbon feed stream comprising an olefin to the orifice at a close distance from the orifice; and c) a throat connecting the chamber in the nozzle to an alkylation zone.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 17, 2011
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang