Patents by Inventor C. Chad Roberts

C. Chad Roberts 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: 11597850
    Abstract: The present disclosure provides an ink fluid set containing an aqueous pretreatment composition and an aqueous inkjet ink. This ink fluid set is particularly suitable for printing on offset coated media.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: March 7, 2023
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Xiaoqing Li, Christian Jackson, C Chad Roberts
  • Publication number: 20210079245
    Abstract: The present disclosure provides an ink fluid set containing an aqueous pretreatment composition and an aqueous inkjet ink. This ink fluid set is particularly suitable for printing on offset coated media.
    Type: Application
    Filed: December 17, 2018
    Publication date: March 18, 2021
    Inventors: Xiaoqing Li, Christian Jackson, C Chad Roberts
  • Patent number: 10196531
    Abstract: The present disclosure provides an ink for inkjet printing. The ink contains an aqueous vehicle, a dispersed pigment colorant, a dispersed polyurethane polymer, and a dispersed olefin ionic copolymer. The ink exhibits improved short-term durability.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: February 5, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Christian Jackson, C. Chad Roberts
  • Patent number: 9815994
    Abstract: Aqueous pigment dispersions having monomers in the polymeric dispersant capable of interacting with cellulose are described. These monomers include the ones having a structure of Formula (I): wherein W is O or NH; R1 is C1-C8 alkyl; and R2, R3, R4, R5 and R6 are independently H or C1-C5 alkyl.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: November 14, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Christian Jackson
  • Publication number: 20160333206
    Abstract: The present disclosure provides an ink for inkjet printing. The ink contains an aqueous vehicle, a dispersed pigment colorant, a dispersed polyurethane polymer, and a dispersed olefin ionic copolymer. The ink exhibits improved short-term durability.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 17, 2016
    Inventors: Christian JACKSON, C. Chad Roberts
  • Patent number: 9410010
    Abstract: The present invention relates to urea-terminated polyurethanes dispersants based on diols and polyether diols, aqueous dispersions of such polyurethanes, the manufacture of the urea terminated polyurethane dispersions and inks containing pigments and/or disperse dyes dispersed with these urea terminated polyurethane dispersants. The urea termination can have nonionic hydrophilic substituents.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 9, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Patrick F. McIntyre, Michael Stephen Wolfe, Xiaoqing Li, Hari Babu Sunkara
  • Publication number: 20160168400
    Abstract: Aqueous pigment dispersions having monomers in the polymeric dispersant capable of interacting with cellulose are described. These monomers include the ones having a structure of Formula (I): wherein W is O or NH; R1 is C1-C8 alkyl; and R2, R3, R4, R5 and R6 are independently H or C1-C5 alkyl.
    Type: Application
    Filed: August 4, 2014
    Publication date: June 16, 2016
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Christian Jackson
  • Publication number: 20160168401
    Abstract: Disclosed are aqueous inkjet inks containing a polymeric ink additive as a binder. The binder contains a component capable of interacting with cellulose. Certain acrylate monomers having similar Hansen solubility parameters as cellulose were incorporated into the polymeric binders. Prints from these inks have better durability than similar additives that do not have the components capable of interacting with cellulose.
    Type: Application
    Filed: August 4, 2014
    Publication date: June 16, 2016
    Inventors: C. Chad Roberts, Christian Jackson
  • Patent number: 9315690
    Abstract: Aqueous pigment dispersions based on polyurethane dispersants having components capable of interacting with cellulose are described. These components include a heterocycle pendent and or terminal to the polymer chain. The heterocycle is selected based on its Hansen solubility parameters.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: April 19, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Christian Jackson, Patrick F. McIntyre
  • Patent number: 9303170
    Abstract: Aqueous pigment dispersions having components in the dispersant capable of interacting with cellulose are described. These components include a heterocycle substituted to the oxygen atom of an acrylate ester. The heterocycle is selected based on its Hansen solubility parameters.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: April 5, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Christian Jackson, Patrick F. McIntyre
  • Publication number: 20160054491
    Abstract: In a first aspect, a liquid coating composition includes a blend of a polymer matrix resin and a photochromic dye. The polymer matrix resin includes silane groups, and at least 50% of the silane groups in the polymer matrix resin are at terminal positions. In a second aspect, a film includes a photochromic dye in a polymer matrix. The polymer matrix includes at least one allophanate or biuret group, and the at least one allophanate or biuret group includes a silane moiety. In a third aspect, an ophthalmic lens includes a film, and the film includes a photochromic dye in a polymer matrix. The polymer matrix includes at least one allophanate or biuret group, and the at least one allophanate or biuret group includes a silane moiety.
    Type: Application
    Filed: November 5, 2015
    Publication date: February 25, 2016
    Inventors: CHARLES T. BERGE, C. CHAD ROBERTS
  • Patent number: 9221984
    Abstract: The present disclosure provides an aqueous dispersion containing a colorant and a polyurethane dispersant, wherein the polyurethane dispersant is a polymer having a cross-linkable moiety, wherein the cross-linkable moiety is cross-linked, with a cross-linking agent.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: December 29, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Xiaoqing Li, Charles T Berge, Christian Jackson, C Chad Roberts, Tristan Williams
  • Patent number: 9090788
    Abstract: Disclosed are aqueous inkjet inks containing a polymeric ink additive as a binder. The binder contains a component capable of interacting with cellulose. Certain heterocycles having similar Hansen solubility parameters as cellulose were incorporated into the polymeric binders. Prints from these inks have better durability and optical properties than similar additives that do not have the components capable of interacting with cellulose.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: July 28, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C Chad Roberts, Christian Jackson, Patrick F McIntyre
  • Patent number: 9062228
    Abstract: Disclosed are aqueous inkjet inks containing a polyurethane ink additive as a binder. The binder contains a component capable of interacting with cellulose. Certain heterocycles having similar Hansen solubility parameters as cellulose were incorporated into the polyurethane binders. Prints from these inks have better durability and optical properties than similar additives that do not have the components capable of interacting with cellulose.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: June 23, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C Chad Roberts, Christian Jackson, Patrick F McIntyre
  • Patent number: 9023141
    Abstract: A process for preparing an aqueous pigment dispersion is provided in which a pigment, a coating agent, a grinding agent and a vehicle are subjected to grinding, followed by removal of the grinding agent and the vehicle to form a press cake, and dispersing the press cake to form a pigment dispersion. Also disclosed is an ink-jet ink containing an aqueous vehicle and the aqueous pigment dispersion thus made.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 5, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: James A. Silver, C. Chad Roberts
  • Patent number: 8931889
    Abstract: An ink for inkjet is provided for printing, comprising a self-dispersed pigment colorant and certain hydroxyl terminated polyurethanes derived from polyether diols which enhances fastness of the print towards highlighter and finger smudge without compromising jetting performance and storage stability of the ink.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: January 13, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: C. Chad Roberts, Waifong Liew Anton
  • Publication number: 20150011703
    Abstract: Aqueous pigment dispersions based on polyurethane dispersants having components capable of interacting with cellulose are described. These components include a heterocycle pendent and or terminal to the polymer chain. The heterocycle is selected based on its Hansen solubility parameters.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 8, 2015
    Inventors: C. Chad Roberts, Christian Jackson, Patrick F. McIntyre
  • Publication number: 20150005466
    Abstract: The present disclosure provides a block copolymeric dispersant composition, wherein the dispersant composition includes an A block and a B block, wherein the A block is a segment having a block size of about 5 to about 18 units, is substantially free of hydroxyethylmethacrylate, and makes up at least 50% by weight of a monomer, having the following structure: CH2?CRC(O)O(CHR1CH2O)nR2, wherein R and R1 are H, or methyl; R2 is alkyl of 1-4 carbon atoms or phenyl; and n is about 1 to about 20; and the B block is a segment including an ionic monomer and at least one hydrophobic monomer; and wherein the dispersant is neutralized.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: C. CHAD ROBERTS, Robert Paul Held, Patrick F. McIntyre, Christian Jackson
  • Publication number: 20140378606
    Abstract: Aqueous pigment dispersions having components in the dispersant capable of interacting with cellulose are described. These components include a heterocycle substituted to the oxygen atom of an acrylate ester. The heterocycle is selected based on its Hansen solubility parameters.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 25, 2014
    Inventors: C. Chad Roberts, Christian Jackson, Patrick F. Mcintyre
  • Publication number: 20140296393
    Abstract: The present disclosure provides an aqueous ink for inkjet printing. The ink contains an aqueous vehicle, a pigment dispersion and a polyacrylate dispersant to disperse the pigment dispersion. The dispersion contains a disaccharide to aid water redispersability.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: JOSE ESTEBAN VALENTINI, Gregory Paul Morris, Patrick F. McIntyre, C Chad Roberts