Patents by Inventor Vedasri VEDHARATHINAM
Vedasri VEDHARATHINAM 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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Patent number: 11959183Abstract: A product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal. A method includes forming a product on a cathode. The product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal.Type: GrantFiled: October 1, 2020Date of Patent: April 16, 2024Assignee: Lawrence Livermore National Security, LLCInventors: Juergen Biener, Sneha Akhade, Monika Biener, Zhen Qi, Joel Varley, Stephen Weitzner, Vedasri Vedharathinam
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Publication number: 20230073509Abstract: In one embodiment, a system includes a purification stage configured to purify an input gas stream prior to delivering the input gas stream to a reaction stage; and a collection stage configured to collect at least some ammonia from the reaction stage. The reaction stage is configured to reduce nitrogen into nitride; and convert at least some of the nitride into ammonia. In another embodiment, a separation membrane includes: an anode; a cathode electrically coupled to the anode; and a porous support material positioned between the anode and the cathode. The separation membrane is configured to reduce nitrogen into nitride; and facilitate hydrogenation of the nitride to form ammonia. In another embodiment, a method includes delivering an input gas stream comprising nitrogen to a separation membrane; reducing at least some of the nitrogen into nitride; and reacting at least some of the nitride with hydrogen-containing compound(s).Type: ApplicationFiled: September 8, 2021Publication date: March 9, 2023Inventors: Maira Ceron Hernandez, Hannah Violet Eshelman, Vedasri Vedharathinam, Marissa Wood
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Patent number: 11585771Abstract: Disclosed herein are methods of producing metal nanoparticle-decorated carbon nanotubes. The methods include forming a reaction mixture by combining a first solution with a second solution, wherein the first solution comprises polymer-coated metal nanoparticles comprising metallic nanoparticles coated with a polymer, and wherein the second solution comprises carbon nanotubes. The methods also include heating the reaction mixture to a temperature greater than a glass transition temperature of the polymer for a time sufficient to cause the polymer-coated metal nanoparticles to bind to the carbon nanotubes forming the metal nanoparticle-decorated carbon nanotubes.Type: GrantFiled: February 22, 2022Date of Patent: February 21, 2023Assignee: Palo Alto Research Center IncorporatedInventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Patent number: 11542613Abstract: A flow-through electrolysis cell includes a hierarchical nanoporous metal cathode. A method of reducing CO2 includes flowing the CO2 through the hierarchical nanoporous metal cathode of the flow-through electrolysis cell.Type: GrantFiled: June 22, 2021Date of Patent: January 3, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Monika M. Biener, Juergen Biener, Siwei Liang, Zhen Qi, Michael Stadermann, Vedasri Vedharathinam
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Publication number: 20220178859Abstract: Disclosed herein are methods of producing metal nanoparticle-decorated carbon nanotubes. The methods include forming a reaction mixture by combining a first solution with a second solution, wherein the first solution comprises polymer-coated metal nanoparticles comprising metallic nanoparticles coated with a polymer, and wherein the second solution comprises carbon nanotubes. The methods also include heating the reaction mixture to a temperature greater than a glass transition temperature of the polymer for a time sufficient to cause the polymer-coated metal nanoparticles to bind to the carbon nanotubes forming the metal nanoparticle-decorated carbon nanotubes.Type: ApplicationFiled: February 22, 2022Publication date: June 9, 2022Inventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Patent number: 11327036Abstract: Disclosed herein are embodiments of compositions for gas sensing and sensors utilizing the same. In one embodiment, a composition comprises carbon nanotubes and polymer-coated metal nanoparticles bound to the carbon nanotubes.Type: GrantFiled: August 18, 2020Date of Patent: May 10, 2022Assignee: Palo Alto Research Center IncorporatedInventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Publication number: 20210317587Abstract: A flow-through electrolysis cell includes a hierarchical nanoporous metal cathode. A method of reducing CO2 includes flowing the CO2 through the hierarchical nanoporous metal cathode of the flow-through electrolysis cell.Type: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Monika M. Biener, Juergen Biener, Siwei Liang, Zhen Qi, Michael Stadermann, Vedasri Vedharathinam
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Patent number: 11053597Abstract: A flow-through electrolysis cell includes a hierarchical nanoporous metal cathode. A method of reducing CO2 includes flowing the CO2 through the hierarchical nanoporous metal cathode of the flow-through electrolysis cell.Type: GrantFiled: April 5, 2018Date of Patent: July 6, 2021Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Monika M. Biener, Juergen Biener, Siwei Liang, Zhen Qi, Michael Stadermann, Vedasri Vedharathinam
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Publication number: 20210147989Abstract: A product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal. A method includes forming a product on a cathode. The product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal.Type: ApplicationFiled: October 1, 2020Publication date: May 20, 2021Inventors: Juergen Biener, Sneha Akhade, Monika Biener, Zhen Qi, Joel Varley, Stephen Weitzner, Vedasri Vedharathinam
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Patent number: 10920327Abstract: A method for transporting nitride (N3?) ions in an electrochemical cell includes providing nitrogen to a first side of a solid electrolyte membrane to form nitride ions and transporting the nitride ions across the solid electrolyte membrane. The solid electrolyte membrane includes a metal nitride. The method may be used for ionically-mediated separation and/or compression of nitrogen or to form ammonia.Type: GrantFiled: August 3, 2017Date of Patent: February 16, 2021Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Divyaraj Desai, Vedasri Vedharathinam, Jessica Louis Baker Rivest
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Publication number: 20200378914Abstract: Disclosed herein are embodiments of compositions for gas sensing and sensors utilizing the same. In one embodiment, a composition comprises carbon nanotubes and polymer-coated metal nanoparticles bound to the carbon nanotubes.Type: ApplicationFiled: August 18, 2020Publication date: December 3, 2020Inventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Patent number: 10830721Abstract: Disclosed herein are embodiments of compositions for gas sensing and sensors utilizing the same. In one embodiment, a composition comprises carbon nanotubes and and polymer-coated metal nanoparticles bound to the carbon nanotubes.Type: GrantFiled: April 28, 2017Date of Patent: November 10, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Patent number: 10794858Abstract: An electrochemical metal alloy identification device employing electrolytes to measure and identify different potentials of alloys is presented. This includes physical structure, disposables, electrical systems, control circuitry, and algorithms to identify alloys.Type: GrantFiled: July 14, 2017Date of Patent: October 6, 2020Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: David Mathew Johnson, Jianer Bao, Martin J. Sheridan, Vedasri Vedharathinam, Christopher Paulson, Bhaskar Saha, Jessica Louis Baker Rivest
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Publication number: 20190379063Abstract: In one aspect of an inventive concept, a fuel cell system includes a cathode and an anode, a porous ceramic support positioned between the cathode and anode, and a molten electrolyte mixture in pores of the ceramic support. In another aspect of an inventive concept, a method for producing energy includes directing a gas stream through a cathode, where an inner side of the cathode is adjacent to a dual phase membrane including a ceramic support infiltrated with a molten electrolyte mixture, sweeping an outer side of the anode with water, where an inner side of the anode is adjacent to the dual phase membrane, and collecting energy from the anode. The dual phase membrane is sandwiched between the cathode and an anode.Type: ApplicationFiled: June 7, 2019Publication date: December 12, 2019Inventors: Patrick Campbell, Maira Ceron Hernandez, Vedasri Vedharathinam
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Patent number: 10446861Abstract: A flowing electrolyte fuel cell system design (DHCFC-Flow) is provided. The use of a flowing oxygen-saturated electrolyte in a fuel cell offers a significant enhancement in the cell performance characteristics. The mass transfer and reaction kinetics of the superoxide/peroxide/oxide ion (mobile oxygen ion species) in the fuel cell are enhanced by recirculating an oxidizing gas-saturated electrolyte. Recirculating oxygen-saturated electrolyte through a liquid channel enhances the maximal current observed in a fuel cell. The use of a oxygen saturated electrolyte ensures that the reaction kinetics of the oxygen reduction reaction are fast and the use of convection ameliorates concentration gradients and the diffusion-limited maximum current density. The superoxide ion is generated in situ by the reduction of the oxygen dissolved in the gaseous electrolyte. Also, a dual porosity membrane allows the uniform flow of fuel (e.g., methane) on the fuel side, without allowing phase mixing.Type: GrantFiled: December 28, 2015Date of Patent: October 15, 2019Assignee: Palo Alto Research Center IncorporatedInventors: Divyaraj Desai, Vedasri Vedharathinam, Martin Joseph Sheridan, Ashish V. Pattekar, Craig Eldershaw, Rajesh Kumar Padmarajan, Gabriel Iftime
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Publication number: 20190309425Abstract: A flow-through electrolysis cell includes a hierarchical nanoporous metal cathode. A method of reducing CO2 includes flowing the CO2 through the hierarchical nanoporous metal cathode of the flow-through electrolysis cell.Type: ApplicationFiled: April 5, 2018Publication date: October 10, 2019Applicant: Lawrence Livermore National Security, LLCInventors: Monika M. Biener, Juergen Biener, Siwei Liang, Zhen Qi, Michael Stadermann, Vedasri Vedharathinam
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Publication number: 20190040534Abstract: A method for transporting nitride (N3?) ions in an electrochemical cell includes providing nitrogen to a first side of a solid electrolyte membrane to form nitride ions and transporting the nitride ions across the solid electrolyte membrane. The solid electrolyte membrane includes a metal nitride. The method may be used for ionically-mediated separation and/or compression of nitrogen or to form ammonia.Type: ApplicationFiled: August 3, 2017Publication date: February 7, 2019Applicant: Palo Alto Research Center IncorporatedInventors: Divyaraj Desai, Vedasri Vedharathinam, Jessica Louis Baker Rivest
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Publication number: 20180313775Abstract: Disclosed herein are embodiments of compositions for gas sensing and sensors utilizing the same. In one embodiment, a composition comprises carbon nanotubes and and polymer-coated metal nanoparticles bound to the carbon nanotubes.Type: ApplicationFiled: April 28, 2017Publication date: November 1, 2018Inventors: Gabriel Iftime, Clinton Smith, David Eric Schwartz, Yong Zhang, Vedasri Vedharathinam
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Publication number: 20180045676Abstract: An electrochemical metal alloy identification device employing electrolytes to measure and identify different potentials of alloys is presented. This includes physical structure, disposables, electrical systems, control circuitry, and algorithms to identify alloys.Type: ApplicationFiled: July 14, 2017Publication date: February 15, 2018Applicant: Palo Alto Research Center IncorporatedInventors: David Mathew Johnson, Jianer Bao, Martin J. Sheridan, Vedasri Vedharathinam, Christopher Paulson, Bhaskar Saha, Jessica Louis Baker Rivest
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Patent number: 9880144Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, used to identify the composition of metals and alloys.Type: GrantFiled: December 19, 2014Date of Patent: January 30, 2018Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Saroj Sahu, Craig Eldershaw, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Ranjeet Rao