Patents by Inventor Sarah J. Vella

Sarah J. Vella 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).

  • Publication number: 20200406347
    Abstract: 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: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Applicant: XEROX CORPORATION
    Inventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
  • Patent number: 10843262
    Abstract: 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: Grant
    Filed: February 15, 2019
    Date of Patent: November 24, 2020
    Assignee: XEROX CORPORATION
    Inventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
  • Publication number: 20200354600
    Abstract: An ink composition comprises a thermoplastic polyurethane; particles comprising silver; and at least one diluent liquid. The thermoplastic polyurethane has the property of exhibiting an elongation at break ranging from about 200% to about 1500% at 23° C. when in pure polymer form.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 12, 2020
    Applicant: XEROX CORPORATION
    Inventors: Sarah J. Vella, Yujie Zhu, Gregory McGuire
  • Patent number: 10814659
    Abstract: 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: Grant
    Filed: June 28, 2018
    Date of Patent: October 27, 2020
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, Adela Goredema, Sarah J. Vella, Biby Esther Abraham, Michelle N Chretien
  • Patent number: 10800938
    Abstract: 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: Grant
    Filed: September 16, 2017
    Date of Patent: October 13, 2020
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Michelle N. Chrétien, Adela Goredema, Sarah J. Vella
  • Patent number: 10800948
    Abstract: Conductive adhesive compositions, jettable ink adhesive compositions, printed electronics incorporating the conductive adhesive compositions, and methods for preparing the same are provided. The conductive adhesive composition may include a eutectic metal alloy, an amine, and a solvent, and the eutectic metal alloy may include gallium, indium, and optionally tin.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 13, 2020
    Assignee: XEROX CORPORATION
    Inventors: Sarah J. Vella, Guiqin Song
  • Patent number: 10796813
    Abstract: 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: Grant
    Filed: February 16, 2016
    Date of Patent: October 6, 2020
    Assignee: XEROX CORPORATION
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian
  • Patent number: 10685763
    Abstract: 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: Grant
    Filed: January 19, 2016
    Date of Patent: June 16, 2020
    Assignee: XEROX CORPORATION
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian
  • Publication number: 20200132559
    Abstract: A temperature sensitive ink composition including a metal oxide nanoparticle; a binder; a solvent; an optional dispersant; and an optional surfactant; wherein the ink composition is a thermistor ink that exhibits a change in resistance which is dependent on temperature. A process for preparing the ink composition. A process including depositing the ink composition onto a substrate to form deposited features; and optionally, heating the deposited features on the substrate to form temperature sensitive features on the substrate, wherein depositing can include ink jet printing or aerosol jet printing.
    Type: Application
    Filed: October 31, 2018
    Publication date: April 30, 2020
    Inventors: Sarah J. Vella, Guiqin Song, Chad Smithson, Yujie Zhu
  • Patent number: 10633550
    Abstract: An ink composition including a metal salt amine complex; wherein the metal salt amine complex is formed from a metal salt and an amine; a compound selected from the group consisting of a stable free radical, a photoacid generator, and a thermal acid generator; and an optional solvent. A process including forming a metal salt amine complex; adding a compound selected from the group consisting of a stable free radical, a photoacid generator, and a thermal acid generator to the metal salt amine complex to form an ink. A process forming conductive features on a substrate with the ink composition.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: April 28, 2020
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Michelle N. Chrétien, Adela Goredema, Chad Smithson, Sarah J. Vella
  • Publication number: 20200102468
    Abstract: A dielectric ink composition includes at least one (meth)acrylate compound selected from the group consisting of (meth)acrylate monomers, (meth)acrylate oligomers and combinations thereof; a sensitizing photoinitiator; an amine synergist photoinitiator; a phosphine oxide photoinitiator and a gellant.
    Type: Application
    Filed: November 26, 2018
    Publication date: April 2, 2020
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Sarah J. Vella, Biby Esther Abraham, Cuong Vong
  • Patent number: 10577515
    Abstract: A dielectric ink composition includes at least one (meth)acrylate compound selected from the group consisting of (meth)acrylate monomers, (meth)acrylate oligomers and combinations thereof; a sensitizing photoinitiator; an amine synergist photoinitiator; and a phosphine oxide photoinitiator. A device including a dielectric layer formed by printing the dielectric ink composition described herein is also disclosed.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 3, 2020
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Sarah J. Vella, Biby Esther Abraham, Cuong Vong
  • Publication number: 20200040228
    Abstract: Provided herein is conductive adhesive composition comprising at least one epoxy resin, at least one polymer chosen from polyvinyl phenols and polyvinyl butyrals, at least one melamine resin, a plurality of eutectic metal alloy nanoparticles, and at least one solvent. Also provided herein is an electronic device comprising a substrate, conductive features disposed on the substrate, a conductive electrical component disposed over the conductive features, and a conductive adhesive composition disposed between the conductive features and the conductive electrical component. Further disclosed herein are methods of making a conductive adhesive composition.
    Type: Application
    Filed: February 15, 2019
    Publication date: February 6, 2020
    Applicant: XEROX CORPORATION
    Inventors: Sarah J. Vella, Guiqin Song, Chad Steven Smithson, Naveen Chopra, Kurt Halfyard, Biby Esther Abraham
  • Publication number: 20200038949
    Abstract: 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: Application
    Filed: February 15, 2019
    Publication date: February 6, 2020
    Applicant: XEROX CORPORATION
    Inventors: Guiqin Song, Sarah J. Vella, Barkev Keoshkerian
  • Publication number: 20200040229
    Abstract: Provided herein is conductive adhesive composition comprising at least one epoxy resin, at least one polymer chosen from polyvinyl phenols and polyvinyl butyrals, at least one melamine resin, a plurality of metal nanoparticle shaving an average particle size ranging from about 0.5 nanometers to about 100 nanometers, and at least one solvent. Also provided herein is an electronic device comprising a substrate, conductive features disposed on the substrate, a conductive electrical component disposed over the conductive features, and a conductive adhesive composition disposed between the conductive features and the conductive electrical component. Further disclosed herein are methods of making a conductive adhesive composition.
    Type: Application
    Filed: February 15, 2019
    Publication date: February 6, 2020
    Applicant: Xerox Corporation
    Inventors: Sarah J. Vella, Guiqin Song, Chad Steven Smithson, Kurt Halfyard
  • Publication number: 20200040230
    Abstract: Conductive adhesive compositions, jettable ink adhesive compositions, printed electronics incorporating the conductive adhesive compositions, and methods for preparing the same are provided. The conductive adhesive composition may include a eutectic metal alloy, an amine, and a solvent, and the eutectic metal alloy may include gallium, indium, and optionally tin.
    Type: Application
    Filed: February 15, 2019
    Publication date: February 6, 2020
    Applicant: XEROX CORPORATION
    Inventors: Sarah J. Vella, Guiqin Song
  • Publication number: 20200001637
    Abstract: 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: Application
    Filed: June 28, 2018
    Publication date: January 2, 2020
    Inventors: Barkev Keoshkerian, Adela Goredema, Sarah J. Vella, Biby Esther Abraham, Michelle N. Chretien
  • Patent number: 10418146
    Abstract: A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer and a plurality of metal-plated carbon nanotubes. A method of three dimensional printing using the conductive polymer composite and a filament comprising the conductive polymer composite are also disclosed.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: September 17, 2019
    Assignee: XEROX CORPORATION
    Inventors: Sarah J. Vella, Rachel Prestayko, Carolyn Moorlag, Barkev Keoshkerian
  • Patent number: 10381134
    Abstract: A composite manufacture includes an extrudable thermoplastic matrix and a photochromic colorant, the photochromic colorant conferring to the composite a reversible strain-induced color change property. Methods include adding photochromic colorant to an extrudable thermoplastic polymer matrix to form a mixture, heating the mixture to form a composite, the photochromic colorant conferring to the composite a reversible strain-induced color change property. The composite manufactures can be used in cable coatings permitting visual detection of mechanical stresses in a wire based on the reversible strain-induced color change property.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: August 13, 2019
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Rachel Prestayko, Sarah J. Vella
  • Publication number: 20190156967
    Abstract: 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: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Applicant: xerox corporation
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian, Jordan H. Wosnick