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).

  • Patent number: 9676952
    Abstract: A color three-dimensional (3D) printing system includes (1) a solid build ink for each of a plurality of colors, each solid build ink includes (a) a solid acrylate in an amount from about 40 to about 70 percent by weight, (b) a non-curable wax in an amount from about 10 to about 45 percent by weight, (c) a curable wax in an amount from about 1 to about 15 percent by weight, (d) a photoinitiator, and (e) a colorant; each solid build ink has a curing speed adjusted by a ratio of the non-curable wax to curable wax such that the initial curing speed and final hardness of each solid build ink is approximately the same for each of the plurality of colors, and (2) a support material includes the non-curable wax used in each build ink, the support material providing a scaffold for deposition of each build ink.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: June 13, 2017
    Assignee: XEROX CORPORATION
    Inventors: Marcel P. Breton, Jennifer L. Belelie, Michelle N. Chretien, Naveen Chopra, Barkev Keoshkerian
  • Publication number: 20170148539
    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: November 20, 2015
    Publication date: May 25, 2017
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian, Jordan H. Wosnick
  • Publication number: 20170121547
    Abstract: A curable ink including at least one monomer, oligomer, or prepolymer; an optional photoinitiator; an optional colorant; and amide gellant having a molecular weight of from about 800 to about 2,500 g/mole; wherein the ink has an onset of gelation defined by the glass transition of the low molecular weight amide gellant according to the relationship Onset of Gelation (K)=(Constant) Tg of gellant (K); wherein the Constant is less than 1.5. A process for printing a three-dimensional article including providing a curable ink; depositing the curable ink in one or more layers; and curing the deposited ink to form the three-dimensional object.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Naveen Chopra, Barkev Keoshkerian, Carolyn Moorlag, C. Geoffrey Allen, Marcel P. Breton, Gordon Sisler
  • Publication number: 20170113480
    Abstract: This disclosure is directed to a plate design for use in variable data digital lithographic image forming devices. The disclosed plate design incorporates surface passivated carbon black filler material particles in a fluorosilicone polymer. The disclosed functionalized carbon black material compositions include hydrophobic carbon black particles passivated with polymerized pentafluorostyrene. The disclosed surface passivated carbon black particles have a diameter in a range of 50 nanometers to 1 micron, and enable enhances dispersion in fluorinated polymers, and fine dispersion in solvent. The disclosed surface passivated carbon black particles are particularly usable for improving operational characteristics of fluorosilocone-based reimageable surface layers of imaging members employed in the variable data digital lithographic image forming devices.
    Type: Application
    Filed: October 24, 2015
    Publication date: April 27, 2017
    Inventors: Barkev KEOSHKERIAN, Carolyn MOORLAG, Marcel P. BRETON, Sandra GARDNER
  • Publication number: 20170106586
    Abstract: A process including providing a curable gellant ink composition having a phase transition temperature; heating the ink composition to a temperature above the phase transition temperature; depositing the ink composition onto a substrate; wherein upon contact with the substrate the ink composition freezes to provide a gel ink layer; treating at least a portion of the gel ink layer whereby treated gellant ink reacts to form a three-dimensional object and wherein untreated gellant ink does not react and remains in gellant form; optionally, wherein the unreacted gellant ink provides a support structure for overhang portions of the three-dimensional object.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 20, 2017
    Inventors: Barkev Keoshkerian, Carolyn Moorlag, Edward G. Zwartz, Naveen Chopra, Marcel P. Breton, Sarah J. Vella
  • Patent number: 9624389
    Abstract: An ink comprising a first reactive latex having a first crosslinkable functional group and a second reactive latex a second crosslinkable functional group, wherein the first reactive latex can react with the second reactive latex to form a cross-linked polymer matrix when in contact with each other, wherein the first reactive latex and the second reactive latex are not in contact with each other, which is suitable for use in an indirect printing method, and a method of printing using the ink.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 18, 2017
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Daryl W. Vanbesien, Barkev Keoshkerian, Michelle N. Chrétien, Marcel P. Breton, Jennifer L. Belelie, Jenny Eliyahu
  • Patent number: 9604448
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a non-woven polymer fiber matrix and a polymer dispersed throughout the non-woven polymer fiber matrix. The polymer fiber matrix has a first surface energy and the polymer has a second surface energy. The difference between the first surface energy and the second surface energy is from about 30 mJ/m2 to about 5 mJ/m2.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: March 28, 2017
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Carolyn Patricia Moorlag, Brynn Mary Dooley, Barkev Keoshkerian
  • Patent number: 9605166
    Abstract: An emulsified aqueous ink comprising an electrorheological fluid including a liquid phase and a solid phase, and a co-solvent, which is suitable for use in an indirect printing method.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: March 28, 2017
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Jennifer L. Belelie, Barkev Keoshkerian, Michelle Chrétien
  • Patent number: 9597684
    Abstract: Provided is a method of patterning a substrate. The method includes depositing, in a first predetermined pattern, hydrophobic material on a first surface of a hydrophilic substrate. The method includes permeating the hydrophobic material through a thickness of the substrate without reflowing the deposited hydrophobic material. The method includes sufficiently solidifying the permeated hydrophobic material. The sufficiently solidified hydrophobic material forms a liquid-impervious barrier that separates the substrate into at least one discrete region.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: March 21, 2017
    Assignee: XEROX CORPORATION
    Inventors: Sarah J. Vella, Jennifer L. Belelie, Barkev Keoshkerian, James D. Mayo, Brynn Dooley, C. Geoffrey Allen
  • Patent number: 9573360
    Abstract: An intermediate transfer member containing a thermally conductive nanofiller dispersed in a polymer base, a method of forming the intermediate transfer member, and a method of printing an image to a substrate using the intermediate transfer member.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: February 21, 2017
    Assignee: XEROX CORPORATION
    Inventors: Carolyn Moorlag, Barkev Keoshkerian, Yu Qi, Brynn Mary Dooley
  • Patent number: 9567470
    Abstract: This disclosure is directed to functionalized carbon black material that may be particularly usable for as a filler material to a number of beneficial uses, particularly in image forming devices. The disclosed functionalized carbon black material compositions include hydrophobic carbon black particles surface passivated via the use of an NB-block copolymer where the NB block contains a pentafluorostyrene-maleimide alternating polymer and the B block contains pure pentafluorostyrene. The A/B portion allows for the polymer to adsorb onto the carbon black while the b-block acts as the stabilizer in fluorinated systems. Fine dispersions result from the addition of poly (pentafluorostyrene/Maleimide-b-pentafluorostyrene) or P(PFS/MI-b-PFS) passivated carbon black to fluorinated polymers, enhancing the physical and mechanical properties.
    Type: Grant
    Filed: October 24, 2015
    Date of Patent: February 14, 2017
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Carolyn Moorlag
  • Patent number: 9528012
    Abstract: The present disclosure provides an electron beam ink comprising a radiation curable material selected from the group consisting of a curable monomer, a curable oligomer, and mixtures thereof; and a surfactant, which is suitable for use in an indirect printing method. The present disclosure also provides a method of printing using an electron beam curable ink.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: December 27, 2016
    Assignee: XEROX CORPORATION
    Inventors: Michelle N. Chretien, Jennifer L. Belelie, Naveen Chopra, Barkev Keoshkerian, Marcel P. Breton
  • Publication number: 20160333204
    Abstract: The present disclosure provides a photocurable ink comprising a radiation curable material selected from the group consisting of a curable monomer, a curable oligomer, and mixtures thereof; a photoinitiator; and a surfactant, which is suitable for use in an indirect printing method. The present disclosure also provides a method of printing using a photocurable ink.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Inventors: Michelle N. Chrétien, Jennifer L. Belelie, Naveen Chopra, Barkev Keoshkerian
  • Patent number: 9469143
    Abstract: This disclosure is directed to a plate design for use in variable data digital lithographic image forming devices. The disclosed plate design incorporates surface passivated carbon black filler material particles in a fluorosilicone polymer. The disclosed functionalized carbon black material compositions include hydrophobic carbon black particles surface passivated via the use of an A/B-block copolymer where the A/B block contains a pentafluorostyrene-maleimide alternating polymer and the B block contains pure pentafluorostyrene. The A/B portion allows for the polymer to adsorb onto the carbon black while the b-block acts as the stabilizer in fluorinated systems. Fine dispersions result from the addition of poly (pentafluorostyrene/Maleimide-b-pentafluorostyrene) or P(PFS/MI-b-PFS) passivated carbon black to fluorinated polymers, enhancing the physical and mechanical properties.
    Type: Grant
    Filed: October 24, 2015
    Date of Patent: October 18, 2016
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Carolyn Moorlag
  • Patent number: 9447297
    Abstract: A phase change ink composition comprising an amorphous amide compound, a crystalline compound; an optional synergist; an optional dispersant; and an optional colorant; wherein the amorphous amide compound is of the formula wherein R is selected from the group consisting of an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, and combinations thereof, or wherein the amorphous amide compound is of the formula wherein R1 is selected from the group consisting of an alkylene group, an arylene group, an alkylarylene group, an arylalkylene group, and combinations thereof.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: September 20, 2016
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Adela Goredema, Kentaro Morimitsu, Barkev Keoshkerian, Jennifer L. Belelie, Gabriel Iftime
  • Publication number: 20160244628
    Abstract: A color three-dimensional (3D) printing system includes (1) a solid build ink for each of a plurality of colors, each solid build ink includes (a) a solid acrylate in an amount from about 40 to about 70 percent by weight, (b) a non-curable wax in an amount from about 10 to about 45 percent by weight, (c) a curable wax in an amount from about 1 to about 15 percent by weight, (d) a photoinitiator, and (e) a colorant; each solid build ink has a curing speed adjusted by a ratio of the non-curable wax to curable wax such that the initial curing speed and final hardness of each solid build ink is approximately the same for each of the plurality of colors, and (2) a support material includes the non-curable wax used in each build ink, the support material providing a scaffold for deposition of each build ink.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 25, 2016
    Inventors: Marcel P. Breton, Jennifer L. Belelie, Michelle N. Chretien, Naveen Chopra, Barkev Keoshkerian
  • Publication number: 20160207038
    Abstract: Provided is a method of patterning a substrate. The method includes depositing, in a first predetermined pattern, hydrophobic material on a first surface of a hydrophilic substrate. The method includes permeating the hydrophobic material through a thickness of the substrate without reflowing the deposited hydrophobic material. The method includes sufficiently solidifying the permeated hydrophobic material. The sufficiently solidified hydrophobic material forms a liquid-impervious barrier that separates the substrate into at least one discrete region.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: Sarah J. Vella, Jennifer L. Belelie, Barkev Keoshkerian, James D. Mayo, Brynn Dooley, C. Geoffrey Allen
  • Publication number: 20160207039
    Abstract: Provided is a method of patterning a substrate. The method includes depositing, in a first predetermined pattern, hydrophobic material on a first surface of a hydrophilic substrate. The method includes permeating the hydrophobic material through a thickness of the substrate. The method includes exposing the hydrophobic material to UV-light and sufficiently solidifying the permeated hydrophobic material. The sufficiently solidified hydrophobic material forms a liquid-impervious barrier that separates the substrate into at least one discrete region.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: Sarah J. Vella, Jennifer L. Belelie, Barkev Keoshkerian, James D. Mayo, Brynn Dooley
  • Publication number: 20160200931
    Abstract: A nanosilver ink composition including silver nanoparticles; polystyrene; and an ink vehicle. A process for preparing a nanosilver ink composition comprising combining silver nanoparticles; polystyrene; and an ink vehicle. A process for forming conductive features on a substrate using flexographic and gravure printing processes comprising providing a nanosilver ink composition comprising silver nanoparticles; polystyrene; and an ink vehicle; depositing the nanosilver ink composition onto a substrate to form deposited features; and heating the deposited features on the substrate to form conductive features on the substrate.
    Type: Application
    Filed: January 12, 2015
    Publication date: July 14, 2016
    Inventors: Adela Goredema, Yiliang Wu, Barkev Keoshkerian, Jenny Eliyahu, Cuong Vong, Biby Esther Abraham
  • Publication number: 20160177111
    Abstract: A nanosilver ink composition including silver nanoparticles; a clay dispersion; and an ink vehicle. A process for forming conductive features on a substrate includes providing a nanosilver ink composition comprising silver nanoparticles; a clay dispersion; and an ink vehicle; depositing the nanosilver ink composition onto a substrate to form deposited features; and heating the deposited features on the substrate to form conductive features on the substrate.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 23, 2016
    Inventors: Adela Goredema, C. Geoffrey Allen, Gordon Sisler, Barkev Keoshkerian, Cuong Vong