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: 9328250
    Abstract: A solventless radiation curable stretchable ink composition including an aliphatic urethane monomer or oligomer; an acrylic ester monomer; a photoinitiator; and an optional colorant. A patterned article including a deformable substrate; an image printed on the deformable substrate, the image being formed from a radiation curable stretchable ink composition comprising an aliphatic urethane monomer or oligomer; an acrylic ester monomer; a photoinitiator; and an optional colorant.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: May 3, 2016
    Assignee: Xerox Corporation
    Inventors: Cameron Derry, Yiliang Wu, Naveen Chopra, Peter G. Odell
  • Publication number: 20160046079
    Abstract: A process including depositing a non-curable wax to form a mold; depositing one or more layers of an ultra-violet curable phase change gellant ink onto the mold; curing the ink layers; and removing the mold. A process including an ink set comprising a plurality of differently colored curable phase change inks, wherein each ink of the ink set comprises an ink vehicle, a gelling agent, a pigment, and a dispersant, wherein the dispersant is identical in each colored ink and the dispersant is present in a substantially same amount in each colored ink; combining at least two inks from the set prior to depositing; melting the at least two inks; mixing the at least two inks to form a custom color ink; depositing one or more layers of the custom color ink onto the mold; curing the one or more layers; and removing the mold.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventors: Jennifer L. Belelie, Barkev Keoshkerian, Marcel P. Breton, Naveen Chopra, Michelle N. Chrétien
  • Patent number: 9243148
    Abstract: A method for preparing a pigment dispersion includes milling a starting pigment dispersion containing a pigment and optionally a carrier and a dispersant with milling media having an average particle size of about 100 ?m or less, until a final pigment dispersion having at least one of a desired pigment average particle size and a desired pigment particle size distribution is obtained; optionally separating the milling media from the final pigment dispersion; and optionally diluting the final pigment dispersion to obtain a desired pigment particle concentration.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: January 26, 2016
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, C. Geoffrey Allen, Naveen Chopra, Michelle N. Chretien, Daryl W. Vanbesien, Jenny Eliyahu
  • Patent number: 9228101
    Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink composition comprises both a crystalline compound and an amorphous compound, and optionally, in combination, an organic pigment, which provides for a robust, rapid crystallization ink composition.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 5, 2016
    Assignee: XEROX CORPORATION
    Inventors: Jennifer L. Belelie, Daryl W. Vanbesien, Gabriel Iftime, Corey L. Tracy, Nathan M. Bamsey, Caroline M. Turek, Naveen Chopra, Kentaro Morimitsu
  • Patent number: 9227922
    Abstract: An amorphous amide compound 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. An amorphous diamide compound 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: January 5, 2016
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Adela Goredema, Kentaro Morimitsu, Barkev Keoshkerian, Jennifer L. Belelie
  • Patent number: 9223124
    Abstract: A system is disclosed for measuring the crystallization of crystalline-amorphous mixtures. The system includes a sample holder. and a heating apparatus to melt a ink composition and to keep the melted ink composition at a first specified temperature for a first period of time. The system includes a cooling apparatus to receive the melted ink composition, to cool the melted ink composition and to maintain the cooled ink composition at a second specified temperature. The system includes a microscope and a video recording device to capture images of the cooled ink composition for a second period of time A video processing computer includes a memory, a processor and software instructions and the software instructions causes the computer to extract crystallization parameters about the cooled ink composition from the captured images. The crystallization parameters identify fast solidifying crystalline inks that have a short time duration from onset of crystallization until crystallization.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 29, 2015
    Assignee: XEROX CORPORATION
    Inventors: Gabriel Iftime, Jennifer L. Belelie, Peter G. Odell, Paul S. Bonino, Joanne L. Lee, Naveen Chopra
  • Patent number: 9187663
    Abstract: A phase change ink composition is disclosed. The composition comprises a crystalline component including a diamide compound with an aromatic ring core; an amorphous component; and optionally a colorant. Methods of printing the phase change ink composition are also disclosed.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: November 17, 2015
    Assignee: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Jennifer L. Belelie, Naveen Chopra, Adela Goredema, Gabriel Iftime
  • Patent number: 9139746
    Abstract: The disclosure provides phase change ink compositions comprising an amorphous material comprising mixtures of ester of tartaric acid and ester of citric acid.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 22, 2015
    Assignee: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Adela Goredema, Naveen Chopra, Daryl W. Vanbesien
  • Patent number: 9139743
    Abstract: Disclosed herein is a component that is substantially amorphous, the component comprising at least one non-ester material and at least one ester of malic acid having a formula of wherein R1 and R2 each, independently of the other, is an alkyl group, and further wherein the alkyl portion can be straight, branched or cyclic, saturated or unsaturated, substituted or unsubstituted, having from 1 to about 40 carbon atoms, an substituted or unsubstituted aromatic or heteroaromatic group, and mixtures thereof.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 22, 2015
    Assignee: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Adela Goredema, Naveen Chopra, Jennifer Belelie
  • Publication number: 20150259556
    Abstract: A silver paste ink composition comprises a plurality of first particles comprising silver; a polymer binder; a carrier solvent; and a plurality of second particles comprising silver. The second particles are nanoparticles that are different than the first silver particles, the amount of second particles in the ink composition being sufficient to impart a first color to the uncured ink composition, the first color being different than the color of the same ink composition without the nanoparticles. The silver nanoparticles have a property of causing a change in the color of the ink composition when the ink composition is cured.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 17, 2015
    Inventors: Naveen Chopra, Gabriel Iftime, Yiliang Wu, Sandra J. Gardner
  • Patent number: 9133354
    Abstract: The present disclosure provides a curable aqueous latex ink comprising a curable material, a photoinitiator and a polyester polymer, which is suitable for use in an indirect printing method.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 15, 2015
    Assignee: XEROX CORPORATION
    Inventors: Jennifer L. Belelie, Michelle N. Chrétien, Daryl W. Vanbesien, Jenny Eliyahu, Barkev Keoshkerian, Naveen Chopra
  • Patent number: 9127180
    Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In particular, the solid ink composition comprises a crystalline compound, an amorphous compound, and an organic pigment, which provides for a robust and fast crystallizing ink.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: September 8, 2015
    Assignee: XEROX CORPORATION
    Inventors: Jennifer L. Belelie, Daryl W. Vanbesien, Gabriel Iftime, Peter G. Odell, Kentaro Morimitsu, Naveen Chopra
  • Patent number: 9120939
    Abstract: An emulsified aqueous ink for use in an indirect printing process including: a reactive alkoxysilane; a surfactant; a solvent and co-solvent mixture having water; and a colorant, wherein the ink forms a cross-linked film containing siloxane linkages when the reactive alkoxysilane is hydrolyzed and condensed with heat.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Jennifer L. Belelie, Barkev Keoshkerian, Michelle Chrétien
  • Publication number: 20150240099
    Abstract: A silver flake conductive paste ink includes a silver flake conductive material; non-compressible, conductive particles having a rough morphology; a binder; and a solvent. The conductive paste ink is suitable for screen printing with lower cost and improved conductivity and lower resistivity as compared with conventional conductive inks.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 27, 2015
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Gabriel Iftime, Yilliang Wu, Sandra Gardner
  • Publication number: 20150240100
    Abstract: A silver nanoparticle conductive ink includes silver nanoparticles, a gelling agent, one or more non-polar organic solvents, and optionally a binder. The conductive ink is used for gravure and flexographic printing.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 27, 2015
    Applicant: XEROX CORPORATION
    Inventors: Ping Liu, Naveen Chopra, Matthew A. Heuft, Yiliang Wu
  • Publication number: 20150240102
    Abstract: A low viscosity and a high loading silver nanoparticle conductive ink having at least about 50% weight of silver nanoparticles, a solvent having a viscosity equal to or less than about 1 cps, and a stabilizer. The conductive ink has a viscosity of less than about 5 cps and is suitable for an ultrasonic sprayer printing ink.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 27, 2015
    Applicant: XEROX CORPORATION
    Inventors: Ping Liu, Yiliang Wu, Mahya Mokhtari, Naveen Chopra, Matthew A. Heuft, Rosa Duque
  • Publication number: 20150240101
    Abstract: A high silver content nanosilver conductive ink includes at least about 65% weight of silver nanoparticles, a non-polar organic solvent and, a polymer binder. The conductive ink has a has a conductivity of from about 1.0×104 (S/cm) to about 4.0×105 (S/cm). and a viscosity of from about 20 cps to about 1,000 cps.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 27, 2015
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Ping Liu, Cuong Vong, Sandra Gardner, Yiliang Wu, Mahya Mokhtari
  • Patent number: 9109067
    Abstract: An intermediate transfer member containing a multi-block copolymer containing at least an A block and a B block, wherein the A block has a higher surface energy than the B block, and a method of forming an intermediate transfer member. A method of printing an image to a substrate including applying an ink onto the intermediate receiving member using an inkjet printhead; spreading the ink onto the intermediate receiving member; inducing a property change of the ink; and transferring the ink to a substrate.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: August 18, 2015
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, Michelle N. Chretien, Daryl W. Vanbesien, Marcel P. Breton, Jennifer L. Belelie, Naveen Chopra
  • Patent number: 9109131
    Abstract: A phase change ink composition comprising an amorphous component, a crystalline material, a photochromic material and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates. The novel phase change ink formulation allows the ink to change color when exposed to UV light, reversibly and multiple times, providing an ink suitable for use in security applications.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: August 18, 2015
    Assignee: XEROX CORPORATION
    Inventors: Gabriel Iftime, Daryl W. Vanbesien, Stephan V. Drappel, Jennifer L. Belelie, Naveen Chopra, Adela Goredema
  • Patent number: 9096768
    Abstract: A phase change ink composition is provided comprising a UV-curable component, a crystalline component, and an amorphous component, wherein the addition of a UV-curable component imparts improved robustness over the ink that contains only crystalline and amorphous materials.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: August 4, 2015
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Adela Goredema, Nathan M. Bamsey, Biby Abraham, Kentaro Morimitsu, Michelle Chretien