Patents by Inventor Barkev Keoshkerian
Barkev Keoshkerian 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: 11905427Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.Type: GrantFiled: June 15, 2021Date of Patent: February 20, 2024Assignee: XEROX CORPORATIONInventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
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Patent number: 11760824Abstract: A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.Type: GrantFiled: October 13, 2020Date of Patent: September 19, 2023Inventors: Mahati Chintapalli, Barkev Keoshkerian, Alec Ho, Gabriel Iftime, Quentin Van Overmeere, Eli Bulger
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Patent number: 11545278Abstract: Provided is a method of forming a conductive polymer composite. The method includes forming a mixture. The mixture includes a first thermoplastic polymer, a second thermoplastic polymer and a plurality of metal particles. The first thermoplastic polymer and the second thermoplastic polymer are immiscible with each other. The plurality of metal particles include at least one metal that is immiscible with both the first thermoplastic polymer and the second thermoplastic polymer. The method includes heating the mixture to a temperature greater than or equal to a melting point of the metal.Type: GrantFiled: January 22, 2019Date of Patent: January 3, 2023Assignee: XEROX CORPORATIONInventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian, Jordan H. Wosnick
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Publication number: 20220418104Abstract: The present disclosure is directed to a hybrid conductive ink including: silver nanoparticles and eutectic low melting point alloy particles, wherein a weight ratio of the eutectic low melting point alloy particles and the silver nanoparticles ranges from 1:20 to 1:5.Type: ApplicationFiled: August 31, 2022Publication date: December 29, 2022Applicant: XEROX CORPORATIONInventors: Naveen CHOPRA, Barkev KEOSHKERIAN, Chad Steven SMITHSON, Kurt I. HALFYARD, Michelle N. CHRETIEN
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Patent number: 11510314Abstract: The present disclosure is directed to a hybrid conductive ink including: silver nanoparticles and eutectic low melting point alloy particles, wherein a weight ratio of the eutectic low melting point alloy particles and the silver nanoparticles ranges from 1:20 to 1:5.Type: GrantFiled: September 17, 2019Date of Patent: November 22, 2022Assignee: XEROX CORPORATIONInventors: Naveen Chopra, Barkev Keoshkerian, Chad Steven Smithson, Kurt I. Halfyard, Michelle N. Chretien
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Publication number: 20210337788Abstract: A method of making an anti-microbial nano-particle containing an essential oil compound (EOC) can include the steps of: a) mixing a quantity of an amphiphilic polymer with a quantity of a solvent to produce a suspension b) heating the suspension to a processing temperature that is higher than a glass transition temperature of the amphiphilic polymer thereby formatting a plurality of polymeric micelles within the solvent, each micelle having a hydrophilic outer portion encasing a hydrophobic core and having a micelle diameter of less than about 80 nm; and c) adding a quantity of an essential oil (EOC) or components of such into the suspension so that a concentration of the essential oil compound is between about 0.2% and about 20% wt, whereby the EOC diffuses into and are encapsulated within the hydrophobic cores of each micelle.Type: ApplicationFiled: April 16, 2021Publication date: November 4, 2021Inventors: Barkev Keoshkerian, Francesco Merante, Siyam Subair
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Patent number: 11143958Abstract: A process including providing a substantially flat printed image on a substrate; disposing a curable gellant composition onto the printed image in registration with the printed image, successively depositing additional amounts of the gellant composition to create a raised image in registration with the printed image; and curing the deposited raised image. A process including providing a printed image on a substrate; disposing a curable non-gellant composition onto the printed image in registration with the printed image; and disposing a curable gellant composition onto the printed image in registration with the printed image; to create a raised image in registration with the printed image; and curing the deposited raised image. An ultraviolet curable phase change gellant composition including a radiation curable monomer or prepolymer, a photoinitiator, a silicone polymer or pre-polymer, and a gellant.Type: GrantFiled: April 4, 2018Date of Patent: October 12, 2021Assignee: Xerox CorporationInventors: Jennifer L. Belelie, Michelle N. Chrétien, Paul J. McConville, Jason O'Neil, Barkev Keoshkerian, Anthony S. Condello
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Publication number: 20210308752Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.Type: ApplicationFiled: June 15, 2021Publication date: October 7, 2021Applicant: XEROX CORPORATIONInventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
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Patent number: 11084090Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.Type: GrantFiled: September 9, 2020Date of Patent: August 10, 2021Assignee: XEROX CORPORATIONInventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
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Publication number: 20210040256Abstract: A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.Type: ApplicationFiled: October 13, 2020Publication date: February 11, 2021Inventors: MAHATI CHINTAPALLI, BARKEV KEOSHKERIAN, ALEC HO, GABRIEL IFTIME, QUENTIN VAN OVERMEERE, ELI BULGER
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Publication number: 20200406347Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.Type: ApplicationFiled: September 9, 2020Publication date: December 31, 2020Applicant: XEROX CORPORATIONInventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
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Patent number: 10843262Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.Type: GrantFiled: February 15, 2019Date of Patent: November 24, 2020Assignee: XEROX CORPORATIONInventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
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Patent number: 10836855Abstract: A method to produce a polymer gel includes dissolving precursors in a solvent to form a precursor solution, the precursors including polymer precursors, a stable free radical, one or more initiating radicals, and one or more stable free radical control agents, and heating the precursor solution to a temperature of polymerization to produce a cross-linked gel. A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.Type: GrantFiled: July 26, 2018Date of Patent: November 17, 2020Assignees: PALO ALTO RESEARCH CENTER INCORPORATED, XEROX CORPORATIONInventors: Mahati Chintapalli, Barkev Keoshkerian, Alec Ho, Gabriel Iftime, Quentin Van Overmeere, Eli Bulger
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Patent number: 10814659Abstract: Methods for printing a conductive object are provided which may comprise dispensing one of a first ink composition and a second ink composition towards a substrate surface to form a deposition region on the substrate surface or on a previously printed object on the substrate surface, wherein the first ink composition comprises an aqueous solution of a metal compound and the second ink composition comprises an aqueous solution of a stable free radical; dispensing the other of the first and second ink compositions in the deposition region to mix the first and second ink compositions and induce chemical reduction of the metal compound by the stable free radical and precipitation of the metal of the metal compound; and removing solvent from the deposition region, thereby forming a conductive object comprising the precipitated metal.Type: GrantFiled: June 28, 2018Date of Patent: October 27, 2020Assignee: XEROX CORPORATIONInventors: Barkev Keoshkerian, Adela Goredema, Sarah J. Vella, Biby Esther Abraham, Michelle N Chretien
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Patent number: 10800938Abstract: An ink composition including a metal salt; an optional solvent; and a stable component that is stable in the ink composition until treated, wherein, upon treatment, the component forms a compound that reduces the metal salt to form metal. An ink composition including a metal salt; an initiator; and an optional solvent; wherein, upon treatment, the initiator forms a compound which reduces the metal salt to metal. A process including combining a metal salt, an initiator, and an optional solvent, to form an ink; wherein, upon treatment, the initiator forms a compound which reduces the metal salt to metal. A process including providing an ink composition comprising a metal salt, an initiator, and an optional solvent; depositing the ink composition onto a substrate to form deposited features; and treating the deposited features on the substrate wherein the initiator forms a compound which reduces the metal salt to metal to form conductive features on the substrate.Type: GrantFiled: September 16, 2017Date of Patent: October 13, 2020Assignee: Xerox CorporationInventors: Barkev Keoshkerian, Michelle N. Chrétien, Adela Goredema, Sarah J. Vella
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Patent number: 10796813Abstract: A conductive polymer composite includes: a thermoplastic polymer; a plurality of carbon nanotubes; and a plurality of metallic particulates in an amount ranging from about 0.5% to about 80% by weight relative to the total weight of the conductive polymer composite.Type: GrantFiled: February 16, 2016Date of Patent: October 6, 2020Assignee: XEROX CORPORATIONInventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian
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Conductive ink compositions and methods for preparation of stabilized metal-containing nanoparticles
Patent number: 10752797Abstract: A nanoparticle composition comprising a plurality of stabilized metal-containing nanoparticles comprising silver and/or a silver alloy composite. The stabilized metal-containing nanoparticles are prepared by a method comprising reacting a silver compound with a reducing agent comprising a hydrazine compound by incrementally adding the silver compound to a first mixture comprising the reducing agent, a stabilizer and a solvent. The stabilizer comprises a mixture of a first organoamine and a second organoamine, an alkyl moiety of the first organoamine having a longer carbon chain length than the alkyl moiety of the second organoamine. The first organoamine is selected from the group consisting of decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine and mixtures thereof. The second organoamine is selected from group consisting of butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine and mixtures thereof.Type: GrantFiled: July 24, 2018Date of Patent: August 25, 2020Assignee: XEROX CORPORATIONInventors: Hojjat Seyed Jamali, Adela Goredema, Naveen Chopra, Jonathan Lee, Barkev Keoshkerian -
Patent number: 10717824Abstract: A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.Type: GrantFiled: December 26, 2018Date of Patent: July 21, 2020Assignees: Palo Alto Research Center Incorporated, Xerox CorporationInventors: Mahati Chintapalli, Barkev Keoshkerian, Gabriel Iftime, Quentin Van Overmeere
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Patent number: 10685763Abstract: A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer; carbon nanotubes in an amount ranging from 2% to about 40% by weight, relative to the total weight of the conductive polymer composite; and a plurality of graphitic particles in an amount ranging from about 2% to about 50% by weight, relative to the total weight of the conductive polymer composite.Type: GrantFiled: January 19, 2016Date of Patent: June 16, 2020Assignee: XEROX CORPORATIONInventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian
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Patent number: 10649355Abstract: A method of making a composite feed material for fused deposition modeling (FDM) is disclosed. The method comprises providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. A composite feed material is formed for fused deposition modeling from the composite particles. The composite feed material is in a form selected from a filament and a paste.Type: GrantFiled: July 20, 2016Date of Patent: May 12, 2020Assignee: XEROX CORPORATIONInventors: Barkev Keoshkerian, Rachel Prestayko, Kimberly D. Nosella, Valerie M. Farrugia