Patents by Inventor Alok Srivastava
Alok Srivastava 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: 20240141240Abstract: A system and process for generating, on-site, a sustained C6+C7 aromatic rich solvent stream for tar solvation within the olefin plant employing a two-fuel oil tower system receiving a hydrocarbon feed from a quench water separator drum, where the two-fuel oil tower system is configured to make a sufficient solvent stream containing C6+C7 aromatic rich hydrocarbons that is recycled and mixed with quench water going to the quench water separator drum to assist in removing tar molecules out of the quench water.Type: ApplicationFiled: January 10, 2024Publication date: May 2, 2024Applicant: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Rian Reyneke, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki, Larry J. Shulik, James R. Arnold
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Publication number: 20240116837Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.Type: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicant: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
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Publication number: 20240072217Abstract: The present disclosure relates to a lighting component which may comprise a light emitting diode (LED) or laser diode (LD) for generating at least one of blue light or ultraviolet light. A fluoride phosphor matrix may be included, which may be consolidated into a phosphor ceramic structure including at least one of a transparent fluoride ceramic structure or a translucent fluoride ceramic structure, and positioned adjacent to the LED or LD. The phosphor ceramic structure generates at least one of red or orange light when irradiated by the light emitted from the LED or LD. The phosphor ceramic structure exhibits reduced thermal quenching relative to a fluoride particulate structure irradiated by the LED or LD.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Applicants: Lawrence Livermore National Security, LLC, Current Lighting Solutions, LLCInventors: Nerine CHEREPY, Ross Allen OSBORNE, Stephen PAYNE, Zachary SEELEY, Alok SRIVASTAVA, William BEERS, William COHEN
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Patent number: 11905472Abstract: A system and process for generating, on-site, a sustained C6+C7 aromatic rich solvent stream for tar solvation within the olefin plant employing a two-fuel oil tower system receiving a hydrocarbon feed from a quench water separator drum, where the two-fuel oil tower system is configured to make a sufficient solvent stream containing C6+C7 aromatic rich hydrocarbons that is recycled and mixed with quench water going to the quench water separator drum to assist in removing tar molecules out of the quench water.Type: GrantFiled: April 26, 2022Date of Patent: February 20, 2024Assignee: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Rian Reyneke, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki, Larry J. Shulik, James R. Arnold, Quo-Chen Yeh
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Patent number: 11884608Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.Type: GrantFiled: April 26, 2022Date of Patent: January 30, 2024Assignee: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
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Patent number: 11862758Abstract: The present disclosure relates to a lighting component which may comprise a light emitting diode (LED) or laser diode (LD) for generating at least one of blue light or ultraviolet light. A fluoride phosphor matrix may be included, which may be consolidated into a phosphor ceramic structure including at least one of a transparent fluoride ceramic structure or a translucent fluoride ceramic structure, and positioned adjacent to the LED or LD. The phosphor ceramic structure generates at least one of red or orange light when irradiated by the light emitted from the LED or LD. The phosphor ceramic structure exhibits reduced thermal quenching relative to a fluoride particulate structure irradiated by the LED or LD.Type: GrantFiled: November 26, 2019Date of Patent: January 2, 2024Assignees: Lawrence Livermore National Security, LLC, Current Lighting Solutiosn, LLCInventors: Nerine Cherepy, Ross Allen Osborne, Stephen A. Payne, Zachary Seeley, Alok Srivastava, William Winder Beers, William Erwin Cohen
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Publication number: 20230182985Abstract: The present disclosure relates to a plus shaped packaging paper [100]. The plus shaped packaging paper [100] includes a plus shaped first flat layer [102] of a first paper material and a plus shaped second fluted layer [104] of a second paper material. The plus shaped second fluted layer [104] is attached to the plus shaped first flat layer [102] to form the plus shaped paper packaging paper [100] having a set of adjacent sides. Further, the plus shaped packaging paper [100] includes a set of diagonal cuts [106], wherein each diagonal cut from the set of diagonal cuts [106] is present in between a corner formed by two adjacent sides of the set of adjacent sides.Type: ApplicationFiled: December 6, 2022Publication date: June 15, 2023Applicant: FLIPKART INTERNET PRIVATE LIMITEDInventors: Disha Sheokand, Indranil Saha, Alok Srivastava
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Publication number: 20230105187Abstract: Methods, systems, and computer programs are presented for backing up data to a distributed multichannel storage system. One method includes an operation for detecting, by a distributed backup system (DBS), a request for backing up data from a host to the distributed backup system. The DBS sends a request to a backup agent executing at the host to initiate the backup. The backup agent mounts an endpoint for writing to the DBS and executes a script that writes the data for the backup to the endpoint. Further, the method includes operations for creating a file system stack at the DBS associated with the endpoint, storing data received by the file system stack at the DBS, and detecting, by the DBS, an end of the backup. The DBS sends a command to the backup agent to end the backup and terminates the file system stack at the DBS.Type: ApplicationFiled: November 15, 2021Publication date: April 6, 2023Inventors: Vaibhav Bhagee, Abhishek Goyal, Nicolas Groh, Kshitiz Jain, Nitin Rathor, Sankaran Sivathanu, Toshad Salwekar, Alok Srivastava
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Publication number: 20230091233Abstract: The present disclosure relates to processes, apparatuses, and systems for the removal of sulfur compounds from a heavy hydrocarbon feed as part of steam cracking processes to produce light olefins. In at least one embodiment, the process includes introducing a hydrocarbon feed having a first sulfur content to a steam cracker to produce a steam cracker effluent having a second sulfur content less than the first sulfur content. The process includes introducing the steam cracker effluent to a fractionation system to produce a light hydrocarbon product stream having a third sulfur content less than the second sulfur content.Type: ApplicationFiled: March 9, 2021Publication date: March 23, 2023Inventors: Alok Srivastava, Rodney S. Smith, James P. Chapman
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Publication number: 20220340504Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.Type: ApplicationFiled: April 26, 2022Publication date: October 27, 2022Applicant: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
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Publication number: 20220340501Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.Type: ApplicationFiled: April 26, 2022Publication date: October 27, 2022Applicant: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
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Publication number: 20220340825Abstract: A system and process for generating, on-site, a sustained C6+C7 aromatic rich solvent stream for tar solvation within the olefin plant employing a two-fuel oil tower system receiving a hydrocarbon feed from a quench water separator drum, where the two-fuel oil tower system is configured to make a sufficient solvent stream containing C6+C7 aromatic rich hydrocarbons that is recycled and mixed with quench water going to the quench water separator drum to assist in removing tar molecules out of the quench water.Type: ApplicationFiled: April 26, 2022Publication date: October 27, 2022Applicant: Kellogg Brown & Root LLCInventors: David Sellinger, Rian Reyneke, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki, Larry J. Shulik, James R. Arnold
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Publication number: 20220340826Abstract: A system for hydrogenation C3 and C4 acetylenes contained within a hydrocarbon stream generated in a stream cracker unit where a debutanizer is placed upstream of a depropanizer for more economical processing of the hydrocarbon stream to produce lighter hydrocarbons, where the system requires only one stripper tower downstream of hydrogenation to remove residual hydrogen.Type: ApplicationFiled: April 26, 2022Publication date: October 27, 2022Applicant: KELLOGG BROWN & ROOT LLCInventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
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Patent number: 11477945Abstract: A lighting device is presented. The lighting device includes an LED light source; and a red/far-red emitting phosphor radiationally coupled to the LED light source, wherein the red/far-red emitting phosphor comprises a host material activated with an activator ion, and wherein the activator ion comprises at least one of Sm2+ and Mn2+. Numerous other aspects are provided.Type: GrantFiled: March 12, 2020Date of Patent: October 25, 2022Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: William Winder Beers, William Erwin Cohen, Alok Srivastava
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Patent number: 11183839Abstract: Disclosed examples relate to a power conversion system configured to provide a power output from an arrangement of direct current (DC) power sources. One example power conversion system includes multiple power sources PV(n), n=1 to x, connected in a series. For each power source PV(n) for n=1 to x?1, the power conversion system includes an intermediate bidirectional voltage converter VC(n) connected to a first terminal of the power source PV(n), a first terminal of power source PV(x), and a second terminal of power source PV(1). Each intermediate bidirectional voltage converter VC(n) includes a first switch operable in a pulsed mode to boost a power output by power source PV(n) and a second switch operable in a pulsed mode to reduce a power output by power source PV(n). The power conversion system also includes a balancer VC(x) connected to the first terminal of PV(x) and to a load.Type: GrantFiled: October 10, 2017Date of Patent: November 23, 2021Assignee: IGRENENERGI, INC.Inventors: Jitendra Apte, Alok Srivastava, Hemanshu Bhatt, Sunit Tyagi, Dipti Kapadia, Vinod Kumar Singh, Bhawani Patnaik, Leah Mathew
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Patent number: 11157293Abstract: Computer interfaces are provided for managing and deploying contextually relevant event canvases based on entity roles. Some systems are configured for identifying events and generating contextually relevant canvases associated with those events, which are contextually based on roles assigned to the events. A master canvas is also provided for facilitating navigation between the various canvases and to assign roles to the canvases, as well as for facilitating management configuration of the canvases. The master canvas includes a tabbed interface that allows navigation, configuration, and insight into the various canvases.Type: GrantFiled: December 18, 2018Date of Patent: October 26, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Eli Schwartz, Alok Srivastava, Michael Andrew Foynes, Eli Ben-David, Merav Davidson, Alexander Vakaluk, Nir Levy, Ami Luttwak, Irit Shalom Kantor, Eli Arbel, Eyal Livne, Avner Shahar-Kashtan, Rona Mayk, Ariel Ben-Horesh, Moaid Hathot, Alexander Pshul
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Publication number: 20210126471Abstract: Systems and methods are provided for maintaining charge control of a battery array where a plurality of batteries is serially connected. Each of the battery has an odd switch and an even switch. A battery charge current and voltage for each of the battery is controlled by establishing a controlled charging for the batteries. The odd switch is controlled using a Pulse Width Modulation (PWM) signal. An inductor coupled with the battery array supplies stored power to each of the battery of the plurality of batteries. The battery charge current and voltage is managed by either establishing a restricted battery charge current or battery voltage for one of the battery with high SOC or the battery that is to be charged with lower current rate is switched by a lower duty cycle PWM signal while the remaining batteries are charged with a higher duty cycle PWM signal.Type: ApplicationFiled: October 27, 2020Publication date: April 29, 2021Inventors: Alok Srivastava, Vinod Kumar Singh, Shikhar Srivastava
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Patent number: 10936343Abstract: Computer interfaces are provided for accessing and displaying content from disparate and remotely connected computer systems and that can be used for facilitating collaboration and visualization of physical and cloud resources for distributed event management. Systems are provided for generating, modifying, deploying, accessing, and otherwise managing the computer interfaces. Templates are used to build canvas interfaces that are contextually relevant for different entities based on the context of associated events and assigned roles of the entities with respect to the different events. The canvas interfaces can be used to access and orchestrate resources associated with the different events.Type: GrantFiled: December 18, 2018Date of Patent: March 2, 2021Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Eli Schwartz, Alok Srivastava, Michael Andrew Foynes, Eli Ben-David, Merav Davidson, Alexander Vakaluk, Nir Levy, Ami Luttwak, Irit Shalom Kantor, Eli Arbel, Eyal Livne, Avner Shahar-Kashtan, Rona Mayk, Ariel Ben-Horesh, Moaid Hathot, Alexander Pshul, Karen Master Ben-Dor, Adi Diamant, Eliazer Carmon
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Publication number: 20200288642Abstract: A lighting device is presented. The lighting device includes an LED light source; and a red/far-red emitting phosphor radiationally coupled to the LED light source, wherein the red/far-red emitting phosphor comprises a host material activated with an activator ion, and wherein the activator ion comprises at least one of Sm2+ and Mn2+. Numerous other aspects are provided.Type: ApplicationFiled: March 12, 2020Publication date: September 17, 2020Inventors: William Winder BEERS, William Erwin COHEN, Alok SRIVASTAVA
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Patent number: 10731092Abstract: The invention generally relates to processes for separating steam cracker products by fractional distillation, and to systems and apparatus useful in such processes. More specifically, the invention relates to decreasing the amount of fractionator fouling that can result from increasing the amount of hydrocarbon molecules in the steam cracker feed having four or fewer carbon atoms.Type: GrantFiled: April 9, 2019Date of Patent: August 4, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Alok Srivastava, David C. Dutschmann, Thomas W. Pavia