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: 10405540
    Abstract: A composite filament includes a core particle comprising a styrene/acrylate polymer resin, and a shell comprising a styrene/acrylate ionomer resin, wherein the styrene/acrylate ionomer resin comprises a metal ion acrylate monomer, and methods of making thereof. Various articles can be manufactured from such composite filaments.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: September 10, 2019
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chretien
  • Patent number: 10315409
    Abstract: A method of selective laser sintering is disclosed. The method comprises providing composite particles made by emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. The composite particles are exposed to a laser to fuse the composite particles.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 11, 2019
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, Jordan H. Wosnick, Rachel Prestayko, Kimberly D. Nosella, Valerie M. Farrugia, Edward G. Zwartz
  • Patent number: 10308827
    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: Grant
    Filed: October 30, 2015
    Date of Patent: June 4, 2019
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Barkev Keoshkerian, Carolyn Moorlag, C. Geoffrey Allen, Marcel P. Breton, Gordon Sisler
  • 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
  • Publication number: 20190135984
    Abstract: A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.
    Type: Application
    Filed: December 26, 2018
    Publication date: May 9, 2019
    Inventors: Mahati Chintapalli, Barkev Keoshkerian, Gabriel Iftime, Quentin Van Overmeere
  • Publication number: 20190106543
    Abstract: A method of producing a transparent polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, placing the gel precursors into a substrate, polymerizing the gel on the substrate, optionally removing the wet gel from the mold, optionally performing at least one solvent exchange on the gel, and drying the solvent-exchanged gel.
    Type: Application
    Filed: October 9, 2017
    Publication date: April 11, 2019
    Inventors: Mahati Chintapalli, Barkev Keoshkerian, Gabriel Iftime, Quentin Van Overmeere
  • Publication number: 20190085195
    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: Application
    Filed: September 16, 2017
    Publication date: March 21, 2019
    Inventors: Barkev Keoshkerian, Michelle N. Chrétien, Adela Goredema, Sarah J. Vella
  • Patent number: 10234342
    Abstract: An article includes a body and at least one 3D-printable conductive composite segment in mechanical communication with the body. The body includes a first material and the at least one conductive composite segment includes a matrix material, a plurality of carbon nanotubes, and conductive additives. The conductive additives include a plurality of metallic particulates, a plurality of graphitic particles or a combination thereof.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: March 19, 2019
    Assignee: XEROX CORPORATION
    Inventors: Carolyn Moorlag, Rachel Prestayko, Barkev Keoshkerian, Sarah J. Vella
  • Patent number: 10229769
    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: Grant
    Filed: November 20, 2015
    Date of Patent: March 12, 2019
    Assignee: XEROX CORPORATION
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian, Jordan H. Wosnick
  • Publication number: 20190062582
    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 including providing an ink composition comprising 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; depositing the ink composition onto a substrate to form deposited features; and treating the deposited features on the substrate to form conductive features on the substrate.
    Type: Application
    Filed: August 31, 2017
    Publication date: February 28, 2019
    Inventors: Barkev Keoshkerian, Michelle N. Chrétien, Adela Goredema, Chad Smithson, Sarah J. Vella
  • Patent number: 10186344
    Abstract: A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer; carbon nanotubes; at least one electron donor molecule and at least one electron acceptor molecule. A method of three-dimensional printing using the conductive polymer composite and a conductive polymer composite filament are also disclosed.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 22, 2019
    Assignee: XEROX CORPORATION
    Inventors: Rachel Prestayko, Sarah J. Vella, Carolyn Moorlag, Barkev Keoshkerian
  • Patent number: 10174205
    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: Grant
    Filed: October 19, 2015
    Date of Patent: January 8, 2019
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Carolyn Moorlag, Edward G. Zwartz, Naveen Chopra, Marcel P. Breton, Sarah J. Vella
  • Patent number: 10113059
    Abstract: A composite powder includes a core particle comprising a styrene/acrylate polymer resin, and a shell comprising a styrene/acrylate ionomer resin, wherein the styrene/acrylate ionomer resin comprises a metal ion acrylate monomer, and methods of making thereof. Various articles can be manufactured from such composite powders.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 30, 2018
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chretien
  • Publication number: 20180242451
    Abstract: The present disclosure is directed to a hybrid conductive ink including: silver nanoparticles and eutectic low melting point alloy particles, wherein a weight ratio of the eutectic low melting point alloy particles and the silver nanoparticles ranges from 1:20 to 1:5.
    Type: Application
    Filed: February 22, 2017
    Publication date: August 23, 2018
    Applicant: XEROX CORPORATION
    Inventors: Naveen CHOPRA, Barkev KEOSHKERIAN, Chad Steven SMITHSON, Kurt I. HALFYARD, Michelle N. CHRETIEN
  • Patent number: 9909013
    Abstract: A composite powder includes a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix and methods of making thereof. Various articles can be manufactured from such composite powders.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 6, 2018
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chrétien
  • Patent number: 9908977
    Abstract: A composite powder includes a core particle comprising a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix, and a shell polymer disposed about the core particle, and methods of making thereof. Various articles can be manufactured from such composite powders.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 6, 2018
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chrétien
  • Publication number: 20180044545
    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: August 12, 2016
    Publication date: February 15, 2018
    Inventors: Michelle N. Chrétien, Jennifer L. Belelie, Naveen Chopra, Barkev Keoshkerian
  • Patent number: 9877485
    Abstract: A composite filament includes a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix and methods of making thereof. Various articles can be manufactured from such composite filaments.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: January 30, 2018
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chrétien
  • Publication number: 20180022042
    Abstract: A method of making a composite feed material for fused deposition modeling (FDM) is disclosed. The method comprises providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. A composite feed material is formed for fused deposition modeling from the composite particles. The composite feed material is in a form selected from a filament and a paste.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 25, 2018
    Inventors: Barkev Keoshkerian, Rachel Prestayko, Kimberly D. Nosella, Valerie M. Farrugia
  • Publication number: 20180022043
    Abstract: A method of selective laser sintering is disclosed. The method comprises providing composite particles made by emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. The composite particles are exposed to a laser to fuse the composite particles.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 25, 2018
    Inventors: Barkev Keoshkerian, Jordan H. Wosnick, Rachel Prestayko, Kimberly D. Nosella, Valerie M. Farrugia, Edward G. Zwartz