Patents by Inventor Robert Claridge
Robert Claridge 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: 20240110008Abstract: A structured organic film (SOF) is disclosed including a plurality of segments, a plurality of linkers, and a plurality of ionic capping segments, where at least one or more ionic capping segments may include imidazolium. Implementations of the structured organic film (SOF) include where a concentration of ionic capping segments in the SOF is from about 0.1 to about 5.0 molar equivalents of ionic capping segments as compared to a concentration of nonionic segments in the SOF. A thickness of the SOF is from about 100 nm to about 500 ?m. At least one of the plurality of ionic capping segments may include n-hydroxyethyl-1,2,4,5-tetramethylimidazolium (NETMImBr). At least one of the plurality of ionic capping segments may include n-hydroxypropyl-1,2,4,5-tetramethylimidazolium (NPTMImBr). An ion-exchange membrane may include the structured organic film (SOF).Type: ApplicationFiled: September 15, 2022Publication date: April 4, 2024Applicant: XEROX CORPORATIONInventors: Robert Claridge, Valerie M. Farrugia, David Lawton
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Publication number: 20240102186Abstract: A composition, a gas diffusion electrode, and a method for fabricating the same is disclosed. In an example, the composition includes carbon supported carboxyl surface functionalized silver nanoparticles. The gas diffusion electrode can be fabricated with the carbon supported carboxyl surface functionalized silver nanoparticles and deployed in a membrane electrode assembly for various applications.Type: ApplicationFiled: September 22, 2022Publication date: March 28, 2024Inventors: Yujie Zhu, Yulin Wang, Robert Claridge, Edward G. Zwartz, Kurt I. Halfyard, David Lawton
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Patent number: 11932735Abstract: High spherical particles for use in piezoelectric applications may be produced mixing a mixture comprising a graphene oxide-polyvinylidene fluoride (GO-PVDF) composite, a carrier fluid that is immiscible with the PVDF, and optionally an emulsion stabilizer at a temperature equal to or greater than a melting point or softening temperature of the PVDF to disperse the GO-PVDF composite in the carrier fluid, wherein the GO-PVDF composite has a transmission FTIR minimum transmittance ratio of ?-phase PVDF to ?-phase PVDF of about 1 or less; cooling the mixture to below the melting point or softening temperature of the PVDF to form GO-PVDF particles; and separating the GO-PVDF particles from the carrier fluid, wherein the GO-PVDF particles comprise the graphene oxide dispersed in the PVDF, and wherein the GO-PVDF particles have a transmission FTIR minimum transmittance ratio of ?-phase PVDF to ?-phase PVDF of about 1 or less.Type: GrantFiled: June 14, 2021Date of Patent: March 19, 2024Assignee: Xerox CorporationInventors: Valerie M. Farrugia, Robert Claridge, Hojjat Seyed Jamali
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Publication number: 20240010850Abstract: A gas diffusion electrode and a method for fabricating the same is disclosed. The gas diffusion electrode can be deployed in a membrane electrode assembly for various applications. In an example, the method to fabricate the gas diffusion electrode includes preparing an ink comprising carbon supported surface functionalized silver nanoparticles and depositing the ink on an electrically conductive surface.Type: ApplicationFiled: July 6, 2022Publication date: January 11, 2024Inventors: Yujie Zhu, Yulin Wang, Kurt I. Halfyard, Edward G. Zwartz, Robert Claridge, Benjamin Knapik, David Lawton
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Publication number: 20240011171Abstract: A composition, a gas diffusion electrode, and a method for fabricating the same is disclosed. In an example, the composition includes carbon supported nitrogen surface functionalized silver nanoparticles. The gas diffusion electrode can be fabricated with the carbon supported nitrogen surface functionalized silver nanoparticles and deployed in a membrane electrode assembly for various applications.Type: ApplicationFiled: July 6, 2022Publication date: January 11, 2024Inventors: Yujie Zhu, Yulin Wang, Robert Claridge, Kurt I. Halfyard
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Publication number: 20240010855Abstract: Carbon supported surface functionalized silver nanoparticles and a method for preparing the same are disclosed. For example, a composition includes carbon supported surface functionalized silver nanoparticles, The methods include preparing a liquid-containing composition comprising a plurality of silver nanoparticles and adding a carbon structure with the liquid-containing composition to form the carbon supported silver nanoparticles in-situ or mixing a composition comprising a carbon structure, a plurality of silver nanoparticles, and a liquid to grow silver nanoparticles on the carbon structure in-situ.Type: ApplicationFiled: July 6, 2022Publication date: January 11, 2024Inventors: Robert Claridge, Yujie Zhu, Yulin Wang, David Lawton
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Publication number: 20230348691Abstract: Methods for producing highly spherical particles that comprise: mixing a mixture comprising: (a) nanoclay-filled-polymer composite comprising a nanoclay dispersed in a thermoplastic polymer, (b) a carrier fluid that is immiscible with the thermoplastic polymer of the nanoclay-filled-polymer composite, optionally (c) a thermoplastic polymer not filled with a nanoclay, and optionally (d) an emulsion stabilizer at a temperature at or greater than a melting point or softening temperature of the thermoplastic polymer of the nanoclay-filled-polymer and the thermoplastic polymer, when included, to disperse the nanoclay-filled-polymer composite in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form nanoclay-filled-polymer particles; and separating the nanoclay-filled-polymer particles from the carrier fluid.Type: ApplicationFiled: July 12, 2023Publication date: November 2, 2023Applicant: XEROX CORPORATIONInventors: Robert CLARIDGE, Valerie M. FARRUGIA
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Publication number: 20230265569Abstract: An electrode and a method for fabricating the same is disclosed. For example, the method to fabricate the electrode includes preparing a deposition composition comprising amine-functionalized silver nanoparticles and a solvent and depositing the deposition composition onto an electrically conductive substrate. The electrode can be deployed in a gas diffusion electrode.Type: ApplicationFiled: February 21, 2022Publication date: August 24, 2023Inventors: Yujie Zhu, Benjamin Knapik, Kurt I. Halfyard, Robert Claridge, David Lawton, Atousa Abdollahi
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Patent number: 11732106Abstract: Methods for producing highly spherical particles that comprise: mixing a mixture comprising: (a) nanoclay-filled-polymer composite comprising a nanoclay dispersed in a thermoplastic polymer, (b) a carrier fluid that is immiscible with the thermoplastic polymer of the nanoclay-filled-polymer composite, optionally (c) a thermoplastic polymer not filled with a nanoclay, and optionally (d) an emulsion stabilizer at a temperature at or greater than a melting point or softening temperature of the thermoplastic polymer of the nanoclay-filled-polymer and the thermoplastic polymer, when included, to disperse the nanoclay-filled-polymer composite in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form nanoclay-filled-polymer particles; and separating the nanoclay-filled-polymer particles from the carrier fluid.Type: GrantFiled: July 29, 2021Date of Patent: August 22, 2023Assignee: Xerox CorporationInventors: Robert Claridge, Valerie M. Farrugia
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Patent number: 11731349Abstract: Additive manufacturing processes featuring consolidation of thermoplastic particulates may form printed objects in a range of shapes. Nanoparticles disposed upon the outer surface of the thermoplastic particulates may improve flow performance of the thermoplastic particulates during additive manufacturing, but may lead to excessive porosity following consolidation. Excessive porosity may be detrimental for performance applications requiring high mechanical strength. A carboxylic acid-based sintering aid, particularly a metal carboxylate, may decrease porosity of consolidated parts following sintering without substantially increasing blocking in a powder bed. Particulate compositions suitable for additive manufacturing may comprise: a plurality of thermoplastic particulates comprising a carboxylic acid-based sintering aid admixed with a thermoplastic polymer, and a plurality of nanoparticles disposed upon an outer surface of the thermoplastic particulates.Type: GrantFiled: October 15, 2020Date of Patent: August 22, 2023Assignee: Xerox CorporationInventors: Robert Claridge, Cristina Resetco, Richard Philip Nelson Veregin
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Patent number: 11667788Abstract: Melt emulsification may be employed to form elastomeric particulates in a narrow size range when nanoparticles and a sulfonate surfactant are included as emulsion stabilizers. Such processes may comprise combining a polyurethane polymer, a sulfonate surfactant, and nanoparticles with a carrier fluid at a heating temperature at or above a melting point or softening temperature of the polyurethane polymer, applying sufficient shear to disperse the polyurethane polymer as liquefied droplets in the presence of the nanoparticles in the carrier fluid at the heating temperature, cooling the carrier fluid at least until elastomeric particulates in a solidified state form, and separating the elastomeric particulates from the carrier fluid. The polyurethane polymer defines a core and an outer surface of the elastomeric particulates, and the nanoparticles are associated with the outer surface. The elastomeric particulates may have a span of about 0.9 or less.Type: GrantFiled: June 30, 2020Date of Patent: June 6, 2023Assignee: Xerox CorporationInventors: Robert Claridge, Cristina Resetco, Shivanthi Easwari Sriskandha, Valerie M. Farrugia, Edward G. Zwartz
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Publication number: 20230051250Abstract: Methods for producing highly spherical particles that comprise: mixing a mixture comprising: (a) nanoclay-filled-polymer composite comprising a nanoclay dispersed in a thermoplastic polymer, (b) a carrier fluid that is immiscible with the thermoplastic polymer of the nanoclay-filled-polymer composite, optionally (c) a thermoplastic polymer not filled with a nanoclay, and optionally (d) an emulsion stabilizer at a temperature at or greater than a melting point or softening temperature of the thermoplastic polymer of the nanoclay-filled-polymer and the thermoplastic polymer, when included, to disperse the nanoclay-filled-polymer composite in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form nanoclay-filled-polymer particles; and separating the nanoclay-filled-polymer particles from the carrier fluid.Type: ApplicationFiled: July 29, 2021Publication date: February 16, 2023Applicant: Xerox CorporationInventors: Robert Claridge, Valerie M. Farrugia
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Publication number: 20220396674Abstract: High spherical particles for use in piezoelectric applications may be produced mixing a mixture comprising a graphene oxide-polyvinylidene fluoride (GO-PVDF) composite, a carrier fluid that is immiscible with the PVDF, and optionally an emulsion stabilizer at a temperature equal to or greater than a melting point or softening temperature of the PVDF to disperse the GO-PVDF composite in the carrier fluid, wherein the GO-PVDF composite has a transmission FTIR minimum transmittance ratio of ?-phase PVDF to ?-phase PVDF of about 1 or less; cooling the mixture to below the melting point or softening temperature of the PVDF to form GO-PVDF particles; and separating the GO-PVDF particles from the carrier fluid, wherein the GO-PVDF particles comprise the graphene oxide dispersed in the PVDF, and wherein the GO-PVDF particles have a transmission FTIR minimum transmittance ratio of ?-phase PVDF to ?-phase PVDF of about 1 or less.Type: ApplicationFiled: June 14, 2021Publication date: December 15, 2022Applicant: Xerox CorporationInventors: Valerie M. Farrugia, Robert Claridge, Hojjat Seyed Jamali
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Publication number: 20220389145Abstract: Highly spherical particles may comprise a thermoplastic polymer grafted to a carbon nanomaterial (CNM-g-polymer), wherein the particles have an aerated density of about 0.5 g/cm3 (preferably about 0.55 g/cm3) to about 0.8 g/cm3. Said CNM-g-polymer particles may be useful in a variety of applications including selective laser sintering additive manufacturing methods.Type: ApplicationFiled: May 17, 2021Publication date: December 8, 2022Applicant: Xerox CorporationInventors: Valerie M. Farrugia, Shivanthi Easwari Sriskandha, Robert Claridge
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Publication number: 20220363800Abstract: A nonlimiting example method of forming highly spherical carbon nanomaterial-graft-polyurethane (CNM-g-polyurethane) particles may comprising: mixing a mixture comprising: (a) carbon nanomaterial-graft-polyurethane (CNM-g-polyurethane), wherein the CNM-g-polyurethane particles comprises: a polyurethane grafted to a carbon nanomaterial, (b) a carrier fluid that is immiscible with the polyurethane of the CNM-g-polyurethane, optionally (c) a thermoplastic polymer not grafted to a CNM, and optionally (d) an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the polyurethane of the CNM-g-polyurethane and the thermoplastic polymer, when included, and at a shear rate sufficiently high to disperse the CNM-g-polyurethane in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form CNM-g-polyurethane particles; and separating the CNM-g-polyurethane particles from the carrier fluid.Type: ApplicationFiled: May 17, 2021Publication date: November 17, 2022Applicant: Xerox CorporationInventors: Robert Claridge, Valerie M. Farrugia, Shivanthi Easwari Sriskandha
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Publication number: 20220118693Abstract: Additive manufacturing processes featuring consolidation of thermoplastic particulates may form printed objects in a range of shapes. Nanoparticles disposed upon the outer surface of the thermoplastic particulates may improve flow performance of the thermoplastic particulates during additive manufacturing, but may lead to excessive porosity following consolidation. Excessive porosity may be detrimental for performance applications requiring high mechanical strength. A carboxylic acid-based sintering aid, particularly a metal carboxylate, may decrease porosity of consolidated parts following sintering without substantially increasing blocking in a powder bed. Particulate compositions suitable for additive manufacturing may comprise: a plurality of thermoplastic particulates comprising a carboxylic acid-based sintering aid admixed with a thermoplastic polymer, and a plurality of nanoparticles disposed upon an outer surface of the thermoplastic particulates.Type: ApplicationFiled: October 15, 2020Publication date: April 21, 2022Applicant: Xerox CorporationInventors: Robert Claridge, Cristina Resetco, Richard Philip Nelson Veregin
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Patent number: 11124663Abstract: An ink composition includes at least one sulfonated polyester, at least one (meth)acrylate monomer, at least one urethane acrylate oligomer, at least one photoinitiator, at least one colorant and water.Type: GrantFiled: March 28, 2019Date of Patent: September 21, 2021Assignee: XEROX CORPORATIONInventors: Robert Claridge, Naveen Chopra, Biby Esther Abraham
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Publication number: 20210214567Abstract: An embodiment of the present disclosure is directed to an ink composition. The ink composition comprises at least one water dissipatible sulfonated polyester, at least one polymer additive, at least one colorant chosen from a photochromic colorant and a fluorescent colorant, at least one surfactant, at least one humectant and water.Type: ApplicationFiled: January 14, 2020Publication date: July 15, 2021Applicant: XEROX CORPORATIONInventors: Robert Claridge, Naveen Chopra, Biby Esther Abraham
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Publication number: 20210070993Abstract: Thermoplastic polymer particles can be produced that comprise a thermoplastic polymer and an emulsion stabilizer (e.g., nanoparticles and/or surfactant) associated with an outer surface of the particles. The nanoparticles may be embedded in the outer surface of the particles. Melt emulsification can be used to produce said particles. For example, a method may include: mixing a mixture comprising a thermoplastic polymer, an carrier fluid that is immiscible with the thermoplastic polymer, and the emulsion stabilizer at a temperature greater than a melting point or softening temperature of the thermoplastic polymer and at a shear rate sufficiently high to disperse the thermoplastic polymer in the carrier fluid; cooling the mixture to below the melting point or softening temperature of the thermoplastic polymer to form the thermoplastic polymer particles; and separating the thermoplastic polymer particles from the carrier fluid.Type: ApplicationFiled: June 30, 2020Publication date: March 11, 2021Applicant: Xerox CorporationInventors: Valerie M. Farrugia, Cristina Resetco, Michael S. Hawkins, Shivanthi Easwari Sriskandha, Robert Claridge, Carolyn Patricia Moorlag
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Publication number: 20210070988Abstract: Melt emulsification may be employed to form elastomeric particulates in a narrow size range when nanoparticles and a sulfonate surfactant are included as emulsion stabilizers. Such processes may comprise combining a polyurethane polymer, a sulfonate surfactant, and nanoparticles with a carrier fluid at a heating temperature at or above a melting point or softening temperature of the polyurethane polymer, applying sufficient shear to disperse the polyurethane polymer as liquefied droplets in the presence of the nanoparticles in the carrier fluid at the heating temperature, cooling the carrier fluid at least until elastomeric particulates in a solidified state form, and separating the elastomeric particulates from the carrier fluid. The polyurethane polymer defines a core and an outer surface of the elastomeric particulates, and the nanoparticles are associated with the outer surface. The elastomeric particulates may have a span of about 0.9 or less.Type: ApplicationFiled: June 30, 2020Publication date: March 11, 2021Applicant: Xerox CorporationInventors: Robert Claridge, Cristina Resetco, Shivanthi Easwari Sriskandha, Valerie M. Farrugia, Edward G. Zwartz