Patents Represented by Attorney John H. Lamming
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Patent number: 8313186Abstract: The present invention pertains to a magenta inkjet ink and to an inkjet ink set for inkjet printing comprising the magenta ink and further comprising a yellow and cyan inkjet ink. The magenta ink and the other inks in the ink set are characterized by the presence of certain specific colorants. The magenta ink comprises a certain magenta dye defined in the specification and either one or both of Acid Red 52 and Acid Red 249. The yellow ink comprises Acid Yellow 79 and one or any combination of Direct Yellow 169, Direct Yellow 86 and Acid Orange 33. The cyan ink comprises Direct Blue 199. The magenta ink and the ink set are particularly advantageous for printing on plain and photo-glossy paper.Type: GrantFiled: December 10, 2008Date of Patent: November 20, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Jose Esteban Valentini, Christian Jackson, Kuo Hsiung Kung
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Patent number: 8256884Abstract: The present disclosure provides an ink jet ink including a dye, a vehicle, and a surfactant combination having: (a) an acetylene alcohol having the generic structure: wherein R and R1 are C1-C10 linear or branched alkyl groups or hydrogen, and wherein only one hydrogen on either R or R1 is replaced by a hydroxy group; and (b) a siloxane surfactant having the generalized structure wherein E is —CH3 or —O—Si(CH3)3, provided that E is —CH3 when x is greater than 0; EO is ethylene oxide, PO is propylene oxide, G=-CH2—, or —CH2—CH2—CH2—, x, y, and z are independently about 0 to about 40, and wherein the acetylene alcohol is present in the amount of at least about 0.3%, and the siloxane surfactant is present in the amount of at least about 0.03 to about 0.5 percent, based on the weight of the ink composition. The inks provide good color on a range of media and can be loaded into used inkjet pens without volume reduction.Type: GrantFiled: April 1, 2009Date of Patent: September 4, 2012Assignee: E I du Pont de Nemours and CompanyInventor: James Walter Wheeler
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Patent number: 8258203Abstract: The present invention pertains to a black inkjet ink comprising aqueous vehicle and carbon black pigment stabilized to dispersion by a certain block copolymer dispersant. The invention further pertains to an ink set comprising this black ink and at least a second ink which contains a reactive species capable of destabilizing the carbon black dispersion. Still further, the invention pertains to a method of printing wherein the black ink and second ink are printed in an overlapping relationship, thereby minimizing penetration, feathering and/or bleed of the black pigment and improving print quality.Type: GrantFiled: December 21, 2006Date of Patent: September 4, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Robert Paul Held, C. Chad Roberts, Gregory R. Schulz
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Patent number: 8061831Abstract: The present invention pertains to a yellow ink for inkjet printing and, in particular, to a yellow ink containing a combination of specific yellow colorants, namely Direct yellow 169 and Acid Yellow 79. The present invention further pertains to ink set having this yellow ink. The ink and ink set are particularly advantageous for printing on plain and photo glossy paper.Type: GrantFiled: February 21, 2008Date of Patent: November 22, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Jose Esteban Valentini, Gregory Paul Morris
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Patent number: 7923276Abstract: Processes for forming an electronic device include forming a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. A process for forming the electronic device can include patterning an insulating layer.Type: GrantFiled: July 30, 2010Date of Patent: April 12, 2011Assignees: E. I. du Pont de Nemours and Company, Company Dupont Displays IncInventors: Charles Douglas MacPherson, Gordana Srdanov, Gang Yu
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Patent number: 7914706Abstract: The present invention relates to charge transport compositions. The invention further relates to electronic devices in which there is at least one active layer comprising such charge transport compositions.Type: GrantFiled: May 23, 2008Date of Patent: March 29, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Daniel David LeCloux, Mark A. Guidry, Norman Herron, Nora Sabina Radu, Eric Maurice Smith, Ying Wang
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Patent number: 7915806Abstract: An electronic device can include an organic device layer having a first and a second portion. In one embodiment, the first portion can have a higher resistivity than the second portion and lie between a first and a second electrode and include not more than 15 mole percent basic material. In a particular embodiment, the first and the second electrode can be an anode and cathode of a pixel. In another particular embodiment, the first and the second electrode can be either both anodes or both cathodes of different pixels. In another embodiment, the organic device layer can include a large molecule material. In still another embodiment, a process of forming the electronic device can include selectively modifying the first portion of the organic device layer.Type: GrantFiled: December 19, 2007Date of Patent: March 29, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Shiva Prakash, Nugent Truong
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Patent number: 7911134Abstract: There is provided a new process for forming a light-emitting diode device having first, second, and third subpixel areas. In the process a hole injection layer is applied over an anode layer. The hole injection material has a conductive polymer and a fluorinated acid polymer. A hole transport layer is applied over the hole injection layer. A first electroluminescent material which is either green or blue, is applied to the first subpixel areas. A second electroluminescent material which is either blue or green, is applied to the second subpixel areas. A red electroluminescent material is applied overall, followed by deposition of a cathode. The second electroluminescent material emits a color different from that of the first electroluminescent material.Type: GrantFiled: June 5, 2007Date of Patent: March 22, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Shiva Prakash, William F. Feehery
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Patent number: 7838195Abstract: There is provided an essentially planar test substrate for non-contact printing. The substrate has a first layer having a first surface energy and having a planar measurement portion. A liquid containment pattern is over at least the measurement portion of the first layer. The liquid containment pattern has a second surface energy that is different from the first surface energy. The measurement portion of the first layer and the liquid containment pattern together are substantially planar.Type: GrantFiled: June 7, 2007Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Nigel Morton Coe, Stephen Sorich, Nageswara Rao Tadepalli
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Patent number: 7837902Abstract: Compositions are provided comprising at least one conductive polymer and at least one non-polymeric fluorinated organic acid, salt or ester, wherein the conductive polymer is selected from a polythiophene, a polypyrrole, a polyaniline, and combinations thereof. Electronic devices and applications having at least one layer comprising such compositions are further provided.Type: GrantFiled: January 11, 2008Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Che-Hsiung Hsu, Mark Andrew Harmer, Chrisopher P. Junk
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Patent number: 7838627Abstract: The present invention relates to novel compounds and polymers, compositions comprising novel compounds or polymers, and electronic devices comprising at least one layer containing the compound or polymer.Type: GrantFiled: December 21, 2006Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Nora Sabina Radu, Gary A. Johansson, Norman Herron, Troy C. Gehret
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Patent number: 7837901Abstract: There are provided electrically conducting polymer compositions comprising an electrically conductive polymer or copolymer and an organic solvent wettable fluorinated acid polymer. Electrically conductive polymer materials are derived from thiophene, pyrrole, aniline and polycyclic heteroaromatic precursor monomers. Non-conductive polymers derived from alkenyl, alkynyl, arylene, and heteroarylene precursor monomers. The organic-solvent wettable fluorinated acid polymer is fluorinated or highly fluorinated and may be colloid-forming. Acidic groups include carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The compositions can be used in organic electronic devices.Type: GrantFiled: June 27, 2006Date of Patent: November 23, 2010Assignees: E. I. du Pont de Nemours and Company, DuPont Displays IncInventors: Che-Hsiung Hsu, Christopher P. Junk, Frank P. Uckert, Mark F. Teasley, Andrew Edward Feiging, Charles J. Dubois, Natalie Daoud, Viascheslav A. Petrov, Zheng-Yu Yang, Amy Qi Han, legal representative
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Patent number: 7807992Abstract: Electronic devices comprising an anode, buffer layer, hole transport layer, photoactive layer, electron transport layer, electron injection layer, and cathode are provided, where the photoactive layer comprises a dual dopant in a metallic complex. The dopants are selected so that their emitting wavelengths are essentially the same, while their ionization potentials and electron affinities are substantially different. The dual dopant device allows for tuning the ionization potential of one dopant to enhance hole injection and/or minimize hole trapping, while independently tuning the electron affinity of the other dopant to enhance electron injection and/or minimize electron trapping.Type: GrantFiled: December 22, 2006Date of Patent: October 5, 2010Assignee: E.I. du Pont de Nemours and CompanyInventor: Ying Wang
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Patent number: 7803254Abstract: A process for forming an electronic device includes forming a first layer over a substrate, wherein the first layer includes an organic layer, and depositing a second layer over the substrate after forming the first layer, wherein depositing the second layer is performed using ion beam sputtering. In another embodiment, a process for forming an electronic device includes placing a workpiece within a depositing chamber of a depositing apparatus, wherein the workpiece includes a substrate and an organic layer overlying the workpiece. The process includes generating a plasma within a plasma-generating chamber of the depositing apparatus, wherein the plasma is not in direct contact with the workpiece. The process also includes sending an ion beam from the plasma-generating chamber towards a target within the depositing chamber, wherein the target includes a material, and depositing a layer of the material over the organic layer.Type: GrantFiled: March 2, 2005Date of Patent: September 28, 2010Assignee: E. I. du Pont de Nemours and CompanyInventor: Shiva Prakash
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Patent number: 7795653Abstract: An electronic device can include a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. In another aspect, a process for forming the electronic device can include patterning an insulating layer.Type: GrantFiled: December 22, 2006Date of Patent: September 14, 2010Assignees: E. I. du Pont de Nemours and Company, DuPont Displays, Inc.Inventors: Charles Douglas Macpherson, Gordana Srdanov, Gang Yu
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Patent number: 7785489Abstract: Compositions for improved liquid deposition of active material in manufacturing processes of electronic devices are provided. The compositions comprise at least one active material for liquid deposition, at least one first solvent, at least one second solvent, and at least one third solvent, with a fourth solvent optional. The solvents are selected on the basis of their co-miscibility, ability to form a composition with each other and with active material without significant precipitation of active material from the composition, and at least one of the solvents having a surface tension equal to or less than that of the substrate upon which active material is to be deposited.Type: GrantFiled: December 22, 2006Date of Patent: August 31, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Alberto Goenaga, Paul Anthony Sant
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Patent number: 7749407Abstract: There is provided a transparent conductor including conductive nanoparticles and at least one of (a) a fluorinated acid polymer and (b) a semiconductive polymer doped with a fluorinated acid polymer. The nanoparticles are carbon nanoparticles, metal nanoparticles, or combinations thereof. The carbon and metal nanoparticles are selected from nanotubes, fullerenes, and nanofibers. The acid polymers are fluorinated or highly fluorinated and have acidic groups including carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The semiconductive polymers comprise homopolymers and copolymers derived from monomers selected from substituted and unsubstituted thiophenes, pyrroles, anilines, and cyclic heteroaromatics, and combinations of those. The compositions may be used in organic electronic devices (OLEDs).Type: GrantFiled: June 28, 2006Date of Patent: July 6, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Che-Hsiung Hsu, Hjalti Skulason
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Patent number: 7749037Abstract: The present invention relates to a process for forming an organic electronic device having at least two organic layers. The process includes (a) applying a first organic layer having a first organic material by a method selected from vapor deposition and liquid deposition from a first organic liquid medium; (b) applying a second organic layer having a photoactive compound directly over at least a portion of the first organic layer by liquid deposition from a second organic liquid medium, wherein the first organic material is sparingly soluble in the second organic liquid medium.Type: GrantFiled: January 28, 2005Date of Patent: July 6, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: William John Gambogi, Jr., Norman Herron, Eric Maurice Smith
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Patent number: 7744777Abstract: An electronic device is provided which is a thin field effect transistor, a field effect resistance device, photosensor, photoswitch, light-emitting diode, light-emitting diode display, phototransistor, phototube, IR detector, diode laser, electrochemic displays, electromagnetic shielding device, solid electrolyte capacitors, energy storage device, memory storage device, biosensor, photoconductive cell, photovoltaic device, solar cell or diode, and comprises at least one layer comprising a composition comprising at least one polyaniline and at least one colloid-forming polymeric acid. Methods for making such devices are also provided.Type: GrantFiled: April 4, 2008Date of Patent: June 29, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Che-Hsiung Hsu, Frank P. Uckert
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Patent number: 7727421Abstract: There is provided an electrically conductive polymer composition, comprising a first electrically conductive polymer doped with an organic solvent wettable fluorinated acid polymer in admixture with a second electrically conductive polymer doped with an organic solvent non-wettable fluorinated acid polymer.Type: GrantFiled: June 27, 2006Date of Patent: June 1, 2010Assignee: E. I. du Pont de Nemours and Company duPont Displays IncInventors: Che-Hsiung Hsu, Sunghan Kim, Ian Storms Moody