Patents by Inventor Gabriel Iftime
Gabriel Iftime 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: 11994474Abstract: A method of forming a colorimetric sensor includes depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, the first material attaching the sensing particles to the substrate with at least a portion of the sensing particles is exposed to an ambient environment.Type: GrantFiled: February 28, 2023Date of Patent: May 28, 2024Assignee: XEROX CORPORATIONInventors: Gabriel Iftime, Mahati Chintapalli, Eli Bulger, Warren Jackson, Sean Emerson Doris, Jessica Louis Baker Rivest, Eric Cocker, Antonio Williams, Crystal Pham
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Publication number: 20240150511Abstract: A weak base anion resin has alkylamine segments covalently bound to cross-linking segments, the alkylamine segments being selected from a group consisting of: vinylamine, N-methylvinylamine, N,N-dimethylvinylamine, N-methyl-N-ethylvinylamine, and N,N-diethylvinylamine, and the weak base anion resin including ions adsorbed to the alkylamine segments. A method for ion exchange includes providing a weak base anion resin, contacting the weak base anion resin with a solution containing ions to one of capture or adsorb ions from solution to the weak base anion resin, and regenerating the weak base anion resin. A method to capture and release an acid gas includes providing a weak base anion resin, contacting the weak base anion resin with a gas including an acid gas to one of capture or adsorb the acid gas from the gas to the weak base anion resin, and regenerating the weak base anion resin to release the acid gas.Type: ApplicationFiled: November 2, 2023Publication date: May 9, 2024Inventors: JONATHAN BACHMAN, MAHATI CHINTAPALLI, GABRIEL IFTIME, IGNACIO LOPEZ PENA, FATEMEH OSTADHOSSEIN, ARAVINDH RAJAN, RAVI NEELAKANTAN
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Patent number: 11958747Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.Type: GrantFiled: April 20, 2021Date of Patent: April 16, 2024Assignees: SRI INTERNATIONAL, UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NASA, BAY SYSTEMS CONSULTING, INC.Inventors: Gabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
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Patent number: 11944933Abstract: A primary amine polymer aerogel comprising greater than 5 wt. % of primary amine monomers covalently bound to cross-linking monomers, wherein the primary amine monomers are selected from vinyl amine. A secondary amine polymer aerogel comprising secondary amine monomers covalently bound to cross-linking monomers, the secondary amine monomers being a result of substituting a hydrogen atom from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers. A tertiary amine polymer aerogel comprising tertiary amine monomers covalently bound to cross-linking monomers, the tertiary amine monomers being a result of substituting hydrogen atoms from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers.Type: GrantFiled: December 21, 2022Date of Patent: April 2, 2024Assignee: XEROX CORPORATIONInventors: Mahati Chintapalli, Stephen Meckler, Gabriel Iftime, Rahul Pandey, Mary Louie, Eugene Shin Ming Beh
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Publication number: 20240101833Abstract: Disclosed herein in is a radiative cooling formulation including a solvent for providing a viscosity of a radiative cooling material for application onto a surface to be passively cooled. The radiative cooling formulation includes a binder for the radiative cooling material's integrity and bonding to the surface to be passively cooled. The radiative cooling formulation includes a polymer, which, in combination with the binder, provides one or more properties in the radiative cooling material, including a reflectance of or greater than 55% in a wavelengths range of 0.3 to 2.5 microns and a first thermal emissivity peak value greater than 0.85 at a first wavelength in a range of 8 to 13 microns (?m). For example, the polymer is a latex material including a styrene based copolymer.Type: ApplicationFiled: May 9, 2023Publication date: March 28, 2024Inventors: Sepehr TEHRANI, Quentin VAN OVERMEERE, Scott Alan ELROD, Scott E. SOLBERG, Gabriel IFTIME, Ravi NEELAKANTAN, Bernard D. CASSE
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Publication number: 20240092985Abstract: A composition of matter includes a solid resin powder containing one or more polymer precursors in a range of 80-99.99 wt % polymer precursor and the thermal initiator in a range of 0.001 to 20 wt % of thermal initiator. A composition of matter includes a solid resin powder containing polymer precursors comprising two components in a combination and a thermal intiator, wherein the combination comprises one of a solid epoxy with one of solid amine or anhydride, a powder resin containing both epoxy and one of either amine or anhydride, or two powder resins wherein one contains epoxy and one contains one of either amine or anhydride.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Inventors: JUNHUA WEI, GABRIEL IFTIME, MICHAEL BENEDICT, MAHATI CHINTAPALLI
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Publication number: 20240082818Abstract: A polymer compound containing groups having the chemical structure: where NH2 is a primary amine, and R is not hydrogen, and a polymer backbone wherein two of the R groups are part of the polymer backbone. A method of synthesizing a polymer includes polymerizing amine-convertible monomers to produce a polymer, causing a deprotection reaction with the polymer to form an isocyanate, decomposing the isocyanate to form a polymer containing primary amines. A method to separate CO2 from other gases comprising using a sorbent containing a polymer compound having the structure: where NH2 is a primary amine, and R is not hydrogen, and a polymer backbone wherein two of the R groups are part of the polymer backbone.Type: ApplicationFiled: August 29, 2022Publication date: March 14, 2024Inventors: Kelly Xia, Stephen Matthew Meckler, Jonathan Bachman, Mahati Chintapalli, Gabriel Iftime
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Patent number: 11905387Abstract: A method of producing functionalized graphene oxide includes mixing graphene oxide with a reactive monomer containing at least one epoxy functional group and a secondary functional group that is selected from vinyl, acrylate, methacrylate, and epoxy to form a mixture, adding an activation agent, heating and stirring the mixture, cooling the mixture, separating the particles from the mixture, and drying the particles to produce functionalized graphene oxide.Type: GrantFiled: December 1, 2020Date of Patent: February 20, 2024Assignee: XEROX CORPORATIONInventors: Junhua Wei, Gabriel Iftime, David Mathew Johnson, Jessica Louis Baker Rivest
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Patent number: 11905411Abstract: A composition of matter includes macroparticles comprising particles of one or more continuous phase matrix materials and functionalized microparticles contained at least partially in the one or more matrix material. A method of manufacturing includes producing macroparticles comprising a continuous phase thermoset matrix material mixed with a thermal initiator, depositing a layer of the matrix material onto a powder bed, applying a focused heat source to the layer of matrix material to selectively cure portions of the layer, repeating the depositing and applying until a final shape is formed, and removing uncured powder from the final shape.Type: GrantFiled: January 25, 2021Date of Patent: February 20, 2024Assignee: XEROX CORPORATIONInventors: Michael Benedict, Junhua Wei, Gabriel Iftime
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Publication number: 20240044905Abstract: A composition of matter has a molecularly imprinted polymer having templated pores, and a reactive material occupying a portion of each pore, the reactive material selected to react when an analyte material for which the cavities are templated enters the cavities. A method of synthesizing a molecularly imprinted polymer includes arranging monomers around a template molecule having a reactive component and an analyte component, polymerizing the monomers, removing the template molecule, and reintroducing the reactive component of the template molecule. A method of detecting an analyte includes exposing a molecularly imprinted polymer to a fluid, the polymer having templated pores containing a detector material that is reactive to an analyte.Type: ApplicationFiled: August 3, 2022Publication date: February 8, 2024Inventors: Kelly Xia, Stephen Matthew Meckler, Gabriel Iftime, Mahati Chintapalli, Jerome Unidad
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Publication number: 20240009934Abstract: An embodiment of the present disclosure is directed to a method of additive manufacturing. The method comprises: i) forming a first layer, the first layer comprising at least one material chosen from an article material, a support structure material and a fracturable material; ii) forming an additional layer on the first layer, the additional layer comprising at least one material chosen from the article material, the support structure material and the fracturable material; and iii) repeating ii) one or more times to form a three-dimensional build comprising an article and at least one support structure attached to the article at an interface, the interface comprising the fracturable material formed during one or more of i), ii) or iii), the fracturable material comprising a polymer. A three-dimensional build is also disclosed.Type: ApplicationFiled: July 7, 2022Publication date: January 11, 2024Applicant: XEROX CORPORATIONInventors: Junhua Wei, Daniel Bullard, Gabriel Iftime
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Publication number: 20240009935Abstract: An embodiment of the present disclosure is directed to a method of additive manufacturing. The method comprises: i) forming a first layer, the first layer comprising at least one material chosen from an article material, a support structure material and a fracturable material; ii) forming an additional layer on the first layer, the additional layer comprising at least one material chosen from the article material, the support structure material and the fracturable material; and iii) repeating ii) one or more times to form a three-dimensional build comprising an article and at least one support structure attached to the article at an interface, the interface comprising the fracturable material formed during one or more of i), ii) or iii), the fracturable material comprising a salt. A three-dimensional build is also disclosed.Type: ApplicationFiled: July 7, 2022Publication date: January 11, 2024Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Daniel Bullard, Junhua Wei
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Patent number: 11866559Abstract: A method of manufacturing includes producing a powder resin comprising a polymer precursor and a thermal initiator, packing a fiber structure with the powder resin, resulting in a resin-packed structure, and heating the resin-packed structure to a curing temperature high enough to melt and cure the resin-packed structure to form a final structure.Type: GrantFiled: January 12, 2021Date of Patent: January 9, 2024Assignee: XEROX CORPORATIONInventors: Junhua Wei, Gabriel Iftime, Michael Benedict, Mahati Chintapalli
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Publication number: 20240003922Abstract: A polymeric gel incorporating a diazonium salt for detection of THC. The diazonium salt may be covalently attached to the polymer, or non-covalently distributed throughout the polymer. The polymeric gel may be formulated as a spot on a test strip to be used for drug testing. The drug may include THC. Methods of preparing a polymerizable diazonium salt precursor, called an amino aryloxyl monomer, as well as methods of preparing a polymeric gel incorporating a diazonium salt.Type: ApplicationFiled: May 19, 2023Publication date: January 4, 2024Inventors: Gabriel Iftime, Fatemeh Ostadhossein, Sean Emerson Doris, Stephen Matthew Meckler, Mahati Chintapalli
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Patent number: 11851543Abstract: A method of producing a polymer aerogel includes dissolving precursors into a solvent, wherein the precursors include monomers, crosslinkers, a controlling agent and an initiator to form a precursor solution, wherein at least one of the monomers or at least one of the crosslinkers has a refractive index of 1.5 or lower, polymerizing the precursor solution to form a gel polymer, and removing the solvent from the gel polymer to produce the polymer aerogel. A method of producing a polymer aerogel include dissolving precursors into a solvent, wherein the precursors include monomers, crosslinkers, a controlling agent and an initiator to form a precursor solution, polymerizing the precursor solution to form a gel polymer, removing the solvent from the gel polymer to produce the polymer aerogel, and reducing a refractive index of one of either the gel polymer or the polymer aerogel.Type: GrantFiled: April 30, 2021Date of Patent: December 26, 2023Assignee: XEROX CORPORATIONInventors: Eli Bulger, Mahati Chintapalli, Gabriel Iftime, Quentin Van Overmeere, Jessica Louis Baker Rivest, Ravi Neelakantan, Stephen Meckler
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Patent number: 11834592Abstract: A deposition system has a multi-material print head, a first reservoir of a first compatible material having particles containing chemical elements similar to a first substrate, a second reservoir of a second compatible material having particles containing chemical elements similar to a second substrate, a third reservoir of an polymer precursor material, and at least one mixer. A method of bonding a joint between dissimilar substrate materials includes functionalizing a first compatible material having chemical elements similar to a first substrate, mixing the first compatible material with a polymer precursor material, functionalizing a second compatible material having chemical elements similar to a second substrate, mixing the second compatible material with a polymer precursor material, and using the deposition system to deposit the first and second compatible materials and a polymer precursor material on the joint between the first and second substrate materials.Type: GrantFiled: February 8, 2021Date of Patent: December 5, 2023Assignee: XEROX CORPORATIONInventors: Gabriel Iftime, David Mathew Johnson, Jessica Louis Baker Rivest
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Patent number: 11787987Abstract: A pair of bonded substrates having a first substrate of a first material, a second substrate of the first material, and an adhesive bonding the first substrate to the second substrate, wherein the adhesive has chemically linked compatibilizing particles compatible with the first and second substrates. A composition of matter has an adhesive having a chemically linked particle network forming a bond between a first substrate and a second substrate, wherein compatibilizing particles in the particle network are compatible with the first and second substrates. A method of joining two structures of identical materials includes preparing first and second structures to expose bare material, applying an adhesive to the bare material on the first and second structures, the adhesive containing compatibilizing particles compatible with the material and the preparing allows interaction between the material and the compatibilizing particles, and curing the adhesive.Type: GrantFiled: July 23, 2018Date of Patent: October 17, 2023Assignee: XEROX CORPORATIONInventors: Gabriel Iftime, Jessica Louis Baker Rivest, David Mathew Johnson, Junhua Wei, Eugene Shin Ming Beh
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Patent number: 11781027Abstract: A composition of matter comprises at least 10 wt % epoxy functionalized two-dimensional shaped particles, carbon nanotubes in the range of 0.1 to 5 wt %, epoxy resin and a curing agent. A method of manufacturing a composition of matter includes mixing epoxy resin, carbon nanotubes and a solvent to produce a material, drying the material, and mixing the material with a curing agent to product the composition of matter. A method of printing a composition of matter includes producing the composition of matter by combining epoxy functionalized graphene, carbon nanotubes, epoxy base resin, and a curing agent, extrusion printing the composition of matter into a desired pattern, and curing the pattern.Type: GrantFiled: June 7, 2021Date of Patent: October 10, 2023Assignee: XEROX CORPORATIONInventors: Rahul Pandey, Junhua Wei, Gabriel Iftime, Jamie Kalb
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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: 11746444Abstract: Systems comprising a carbon fiber reactor for fabricating carbon fiber, the reactor comprising a receptacle for containing a carbon-metal melt, and a plurality of nozzles through which a plurality of menisci are formed by the carbon-metal melt for contact with a carbon seed to fabricate the carbon fiber; and a heater for heating the carbon-metal melt.Type: GrantFiled: December 19, 2022Date of Patent: September 5, 2023Assignee: Palo Alto Research Center IncorporatedInventors: Divyaraj Desai, Gabriel Iftime, Dane Andrew Boysen, Jessica Louis Baker Rivest