Patents by Inventor Naveen Chopra

Naveen Chopra 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).

  • Patent number: 10950871
    Abstract: A method for printing a flexible printed battery is disclosed. For example, the method includes printing, via a three-dimensional (3D) printer, a first substrate of the flexible thin-film printed battery, printing a first current collector on the first substrate, printing a first layer on the first current collector, printing, via the 3D printer, a second substrate, printing a second current collector on the second substrate, printing a second layer on the second current collector, and coupling the first substrate and the second substrate around a paper separator membrane moistened with an electrolyte that is in contact with the first layer and the second layer.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 16, 2021
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Gregory McGuire, Edward G. Zwartz
  • Patent number: 10947424
    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: Grant
    Filed: February 15, 2019
    Date of Patent: March 16, 2021
    Assignee: XEROX CORPORATION
    Inventors: Sarah J. Vella, Guiqin Song, Chad Steven Smithson, Naveen Chopra, Kurt Halfyard, Biby Esther Abraham
  • Patent number: 10907058
    Abstract: An aqueous ink composition including water; an optional co-solvent; an optional colorant; a sulfonated polyester; and an isoprene rubber. A process of digital offset printing, the process including applying an ink composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature; wherein the ink composition comprises: water; an optional co-solvent; an optional colorant; a sulfonated polyester; and an isoprene rubber. A process including combining a sulfonated polyester resin, water, an optional co-solvent, an optional colorant, a sulfonated polyester, and an isoprene rubber to form an aqueous ink composition.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 2, 2021
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Biby Esther Abraham, Guerino G. Sacripante, Carolyn Moorlag
  • Patent number: 10907059
    Abstract: An aqueous ink composition including water; an optional co-solvent; a sulfonated polyester, wherein the sulfonated polyester has a degree of sulfonation of at least about 3.5 mol percent; and an isoprene rubber. A process of digital offset printing including applying an ink composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature; wherein the ink composition comprises water; an optional co-solvent; a sulfonated polyester having a degree of sulfonation of at least about 3.5 mol percent; and an isoprene rubber. A process including combining a sulfonated polyester resin, having a degree of sulfonation of at least about 3.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 2, 2021
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Robert Christopher Claridge, Biby Esther Abraham, Carolyn Moorlag, Guerino G. Sacripante
  • Patent number: 10899940
    Abstract: Disclosed herein as a printing method and system which includes providing a substrate and depositing an interlayer composition including a polymer selected from the group of epoxy resins, polyvinyl phenols and poly(melamine-co-formaldehyde) and an interlayer composition solvent on the substrate. The interlayer composition is cured to form cured interlayer. A conductive metal ink composition is deposited on the cured interlayer and the conductive metal ink composition is cured to form a solid metal trace on the cured interlayer.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: January 26, 2021
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Chad Smithson, Kurt Halfyard, Gail Song, Michelle Chretien
  • Publication number: 20200358109
    Abstract: A method for printing a flexible printed battery is disclosed. For example, the method includes printing, via a three-dimensional (3D) printer, a first substrate of the flexible thin-film printed battery, printing a first current collector on the first substrate, printing a first layer on the first current collector, printing, via the 3D printer, a second substrate, printing a second current collector on the second substrate, printing a second layer on the second current collector, and coupling the first substrate and the second substrate around a paper separator membrane moistened with an electrolyte that is in contact with the first layer and the second layer.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 12, 2020
    Inventors: Naveen Chopra, Gregory McGuire, Edward G. Zwartz
  • Patent number: 10828910
    Abstract: The present teachings include a process, system and article for forming a printed image on a textile. In some embodiments, the process includes coating the textile with a layer of polydiallyldimethyl ammonium chloride cationic polymer and coating the textile with the layer of polydiallyldimethyl ammonium chloride cationic polymer with a layer of poly-4-styrene sulfonate anionic polymer. The process can further include applying an ink composition to the textile having the layer of polydiallyldimethyl ammonium chloride cationic polymer layer and the layer of poly-4-styrene sulfonate anionic polymer, forming an image.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 10, 2020
    Assignees: Xerox Corporation, Palo Alto Research Center
    Inventors: Naveen Chopra, Paul J. McConville, Jennifer L. Belelie, Anthony S. Condello, Robert A. Street, Warren Jackson
  • Publication number: 20200308427
    Abstract: 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: Application
    Filed: March 28, 2019
    Publication date: October 1, 2020
    Applicant: XEROX CORPORATION
    Inventors: Robert Claridge, Naveen Chopra, Biby Esther Abraham
  • Patent number: 10752797
    Abstract: 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: Grant
    Filed: July 24, 2018
    Date of Patent: August 25, 2020
    Assignee: XEROX CORPORATION
    Inventors: Hojjat Seyed Jamali, Adela Goredema, Naveen Chopra, Jonathan Lee, Barkev Keoshkerian
  • Patent number: 10738209
    Abstract: An ink composition including a humectant blend comprising a first humectant and a second humectant; wherein the first humectant has a freezing point; wherein the second humectant suppresses the freezing point of the first humectant such as to impart to the ink composition the characteristic of being able to be stored at a desired temperature without solidifying; water; an optional co-solvent; an optional colorant; and a sulfonated polyester. A process of digital offset printing using the ink composition.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: August 11, 2020
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Robert Christopher Claridge, Biby Esther Abraham, Carolyn Moorlag, Guerino G. Sacripante
  • Patent number: 10738204
    Abstract: A method for creating controlled scattering effects including (a) disposing at least one curable ink layer onto a substrate in an imagewise fashion or in a continuous film fashion; (b) applying a first cure to partially cure the ink layer (a); (c) disposing at least one scattering material onto the ink layer (a); and (d) applying a second cure to fully cure the ink layer (a); wherein the first cure and the second cure are applied in a manner to control the disposition of the scattering material on top of and penetration into the curable ink layer to control surface and subsurface scattering properties.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 11, 2020
    Assignees: Xerox Corporation, Palo Alto Research Center Incorporated
    Inventors: Naveen Chopra, Warren Jackson, Steven E. Ready
  • Patent number: 10723887
    Abstract: UV-curable interlayer compositions are provided. In embodiments, the interlayer composition comprises at least one aliphatic di(meth)acrylate monomer diluent having a dynamic viscosity at 25° C. of less than about 100 cps; at least one (meth)acrylate oligomer selected from epoxy (meth)acrylates, polyester (meth)acrylates, polyether (meth)acrylates, urethane (meth)acrylates and combinations thereof, the at least one (meth) acrylate oligomer having a glass transition temperature in the range of from about minus 10° C. to about 100° C. and a dynamic viscosity at 25° C. of less than about 3000 cps; and at least two photoinitiators. Multilayer structures formed using the compositions and related methods are also provided.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 28, 2020
    Assignee: XEROX CORPORATION
    Inventors: Guiqin Song, Nan-Xing Hu, Naveen Chopra, Marcel P. Breton
  • Patent number: 10696857
    Abstract: An ink composition including at least one curable monomer; at least one gellant; an optional photoinitiator; and an optional colorant; wherein the ink composition has a viscosity of less than 106 centipoise at a temperature of from about 20° C. to about 40° C.; and wherein the ink composition has the characteristics of being both ink jettable and pinnable at a temperature of from about 20° C. to about 40° C.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 30, 2020
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Michelle N. Chrétien, Jennifer L. Belelie
  • Patent number: 10688808
    Abstract: A system and method for treatment of thread includes a thread printer that applies colored coatings to thread. A camera is positioned to capture images of the treated thread after it passes through an outlet of the thread printer. The system processes the images to determine whether the location of a selected segment of the treated thread corresponds to an expected location. If the actual location of the selected segment corresponds to the expected location, the system will continue instructing the thread printer to selectively apply the colored coatings to the thread according to the pattern. However, if the actual location does not correspond to the expected location, the system will modify the pattern so that thread printer adjusts the size of one or more segment to automatically account for the misalignment.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: June 23, 2020
    Assignees: Xerox Corporation, Palo Alto Research Center Incorporated
    Inventors: Warren Jackson, Naveen Chopra, Steven E. Ready, Karthik Gopalan, Kent Evans
  • Publication number: 20200139727
    Abstract: A system and method for treatment of thread includes a thread printer that applies colored coatings to thread. A camera is positioned to capture images of the treated thread after it passes through an outlet of the thread printer. The system processes the images to determine whether the location of a selected segment of the treated thread corresponds to an expected location. If the actual location of the selected segment corresponds to the expected location, the system will continue instructing the thread printer to selectively apply the colored coatings to the thread according to the pattern. However, if the actual location does not correspond to the expected location, the system will modify the pattern so that thread printer adjusts the size of one or more segment to automatically account for the misalignment.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 7, 2020
    Inventors: Warren Jackson, Naveen Chopra, Steven E. Ready, Karthik Gopalan, Kent Evans
  • Publication number: 20200141034
    Abstract: A system for treatment of thread includes a weft thread printer having an intake positioned to receive a weft thread from a source, as well as an encoder that is configured to detect a length of the weft thread as the weft thread moves through the weft thread printer along a travel path. The system also includes a printhead positioned to apply coatings of a plurality of colors to the weft thread and yield a treated weft thread, as well as an outlet positioned to pass the treated weft thread to a loom.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 7, 2020
    Inventors: Warren Jackson, Naveen Chopra, Steven E. Ready, Karthik Gopalan, Kent Evans
  • 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: 10604668
    Abstract: An aqueous ink composition including water, an optional co-solvent, a sulfonated polyester, and a polyurethane dispersion, and process of making thereof.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 31, 2020
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Rob Claridge, Biby Esther Abraham, Carolyn Moorlag, Jonathan Siu-Chung Lee, Guerino Sacripante
  • Patent number: 10589248
    Abstract: One embodiment provides a chemical reactor, which can comprise a substrate for facilitating chemical reactions occurring at triple-phase boundaries. One possible substrate may further comprise a set of dynamically controllable sites and/or pixels upon which control signals may affect a desired formation of gas bubbles over an active catalytic (or other desired) solid surface in a liquid flow—wherein a chemical reaction in two or more phase boundaries may occur. In yet another embodiment, a control algorithm may send control signals to controllable sites/pixels to maximize the operation of the reactor according to a desired metric (e.g., product formation) that may input a set of sensor data to affect its control.
    Type: Grant
    Filed: June 30, 2019
    Date of Patent: March 17, 2020
    Assignees: Palo Alto Research Center Incorporated, Xerox Corporation
    Inventors: Sean Doris, Warren Jackson, Naveen Chopra, Bradley Rupp, Robert Street
  • 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