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).
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Publication number: 20260016527Abstract: 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: ApplicationFiled: May 14, 2025Publication date: January 15, 2026Applicant: UCHICAGO ARGONNE, LLCInventors: Moinuddin AHMED, Zhenghong TU, Christopher STANKUS
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Patent number: 11493548Abstract: 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: GrantFiled: July 23, 2021Date of Patent: November 8, 2022Assignee: UCHICAGO ARGONNE, LLCInventors: Moinuddin Ahmed, John N. Hryn, Christopher Stankus
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Publication number: 20220065919Abstract: 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: ApplicationFiled: July 23, 2021Publication date: March 3, 2022Inventors: Moinuddin Ahmed, John N. Hryn, Christopher Stankus
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Patent number: 9388093Abstract: 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: GrantFiled: July 3, 2014Date of Patent: July 12, 2016Assignee: 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
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Publication number: 20160001255Abstract: 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: ApplicationFiled: July 3, 2014Publication date: January 7, 2016Applicant: 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
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Publication number: 20160002125Abstract: 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: ApplicationFiled: July 3, 2014Publication date: January 7, 2016Applicant: 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
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Patent number: 8821805Abstract: 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: GrantFiled: September 12, 2012Date of Patent: September 2, 2014Assignee: Chevron U.S.A. Inc.Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
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Publication number: 20140183282Abstract: 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: ApplicationFiled: March 7, 2014Publication date: July 3, 2014Applicant: Chevron U.S.A. Inc.Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
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Publication number: 20140183275Abstract: 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: ApplicationFiled: March 7, 2014Publication date: July 3, 2014Applicant: CHEVRON U.S.A. INC.Inventors: KRISHNIAH PARIMI, STEVEN XUQI SONG, MOINUDDIN AHMED, THIEN DUYEN THI NGUYEN
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Patent number: 8697015Abstract: 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: GrantFiled: December 1, 2011Date of Patent: April 15, 2014Assignee: Chevron U.S.A. Inc.Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
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Publication number: 20140024874Abstract: 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: ApplicationFiled: September 27, 2013Publication date: January 23, 2014Applicant: CHEVRON U.S.A. INC.Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
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Publication number: 20130274533Abstract: 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: ApplicationFiled: March 14, 2013Publication date: October 17, 2013Applicant: Chevron U.S.A. Inc.Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
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Patent number: 8541638Abstract: 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: GrantFiled: November 26, 2008Date of Patent: September 24, 2013Assignee: Chevron U.S.A. Inc.Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
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Publication number: 20130142700Abstract: 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: ApplicationFiled: December 1, 2011Publication date: June 6, 2013Applicant: CHEVRON U.S.A. INC.Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
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Publication number: 20130066130Abstract: 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: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Applicant: Chevron U.S.A. Inc.Inventors: Huping Luo, Moinuddin Ahmed
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Publication number: 20130004378Abstract: 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: ApplicationFiled: September 12, 2012Publication date: January 3, 2013Applicant: Chevron U.S.A. Inc.Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
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Patent number: 8088338Abstract: 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: GrantFiled: March 18, 2010Date of Patent: January 3, 2012Assignee: Chevron U.S.A. Inc.Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
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Publication number: 20110297618Abstract: 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: ApplicationFiled: August 17, 2011Publication date: December 8, 2011Applicant: CHEVRON U.S.A. INC.Inventors: Huping LUO, Moinuddin AHMED, Kris PARIMI, Bong-Kyu CHANG, Sara LINDSAY
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Patent number: 8067656Abstract: 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: GrantFiled: November 26, 2008Date of Patent: November 29, 2011Assignee: Chevron U.S.A. Inc.Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
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Publication number: 20110282114Abstract: 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: ApplicationFiled: May 14, 2010Publication date: November 17, 2011Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang