Patents by Inventor Nora Sabina Radu

Nora Sabina Radu 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: 11898011
    Abstract: Disclosed is a dianhydride having Formula I, and diamines having Formula IV and Formula VII In the formulas: Y is alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or unsubstituted or substituted heteroaryl and deuterated analogs thereof; Ar2— Ar4 are the same or different and are carbocyclic aryl, heteroaryl, or substituted derivatives thereof; Q1 is a single bond, alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or unsubstituted or substituted heteroaryl and deuterated analogs thereof; R1-R2 are the same or different at each occurrence and are F, CN, deuterium, alkyl, fluoroalkyl, unsubstituted or substituted carbocyclic aryl, unsubstituted or substituted heteroaryl, alkoxy, fluoroalkoxy, unsubstituted or substituted aryloxy, silyl, siloxy and deuterated analogs thereof; R3 is alkyl or unsubstituted or substituted carbocyclic aryl
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: February 13, 2024
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Viacheslav V Diev, Nora Sabina Radu
  • Publication number: 20230074583
    Abstract: Disclosed is a polyimide film that exhibits: an in-plane coefficient of thermal expansion (CTE) that is less than 75 ppm/° C. between 50° C. and 250° C.; a glass transition temperature (Tg) that is greater than 250° C. for the polyimide film cured at 260° C. in air; a 1% TGA weight loss temperature that is greater than 450° C.; a tensile modulus that is between 1.5 GPa and 5.0 GPa; an elongation to break that is greater than 20%; an optical retardation at 550 nm that is less than 100 nm for a 10-?m film; a birefringence at 633 nm that is less than 0.002; a haze that is less than 1.0%; a b* that is less than 3; a yellowness index that is less than 5; and an average transmittance between 380 nm and 780 nm that is greater than 88%.
    Type: Application
    Filed: November 7, 2022
    Publication date: March 9, 2023
    Inventors: Brian C. Auman, John Donald Summers, Nora Sabina Radu, Chai Kit Ngai, Wayne Atkinson, Wei Li, Jonathan Timothy Maeyer
  • Patent number: 11527721
    Abstract: There is disclosed a compound having Formula I In Formula, I: Ar1 is selected from the group consisting of dibenzofuran, dibenzothiophene, or deuterated analogs thereof; Ar2 and Ar3 are the same or different and are hydrocarbon aryl, substituted derivatives thereof, or deuterated analogs thereof, with the proviso that Ar2 and Ar3 are not the same as Ar1; a is 0; and Ar1, Ar2, and Ar3 have no additional amino substituents.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 13, 2022
    Inventors: Norman Herron, Weiying Gao, Nora Sabina Radu, Ying Wang
  • Publication number: 20220325045
    Abstract: Disclosed is a polyamic acid having Formula I In Formula I: Ra represents one or more different tetracarboxylic acid component residues; Rb represents one or more different aromatic diamine residues or aromatic diisocyanate residues; and 5-100 mol % of Rb has Formula II In Formula II: R1 through R6 are the same or different and are haloalkyl or haloalkoxy; R7 is the same or different at each occurrence and is deuterium, halogen, cyano, hydroxyl, alkyl, deuterated alkyl, heteroalkyl, alkoxy, heteroalkoxy, haloalkyl, haloalkoxy, silyl, siloxy, hydrocarbon aryl, substituted hydrocarbon aryl, heteroaryl, substituted heteroaryl, vinyl, or allyl; n is an integer from 0-10; x1 and x4 are the same or different and are an integer from 0-3; x2 and x3 are the same or different and are an integer from 0-2; and * indicates a point of attachment.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 13, 2022
    Inventors: VIACHESLAV V DIEV, NORA SABINA RADU, MICHAEL HENRY HOWARD, Jr., RAKESH NAMBIAR
  • Patent number: 11121324
    Abstract: Disclosed are electrically conductive polymer compositions, and their use in organic electronic devices. The electrically conductive polymer compositions include an intrinsically electrically conductive polymer having Formula II: where Q, R, R?, R?, m, n, and o are defined in the present disclosure.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 14, 2021
    Inventors: Nora Sabina Radu, Arjan Zoombelt
  • Publication number: 20210261734
    Abstract: Disclosed is a dianhydride having Formula I, and diamines having Formula IV and Formula VII In the formulas: Y is alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or unsubstituted or substituted heteroaryl and deuterated analogs thereof; Ar2-Ar4 are the same or different and are carbocyclic aryl, heteroaryl, or substituted derivatives thereof; Q1 is a single bond, alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or unsubstituted or substituted heteroaryl and deuterated analogs thereof; R1-R2 are the same or different at each occurrence and are F, CN, deuterium, alkyl, fluoroalkyl, unsubstituted or substituted carbocyclic aryl, unsubstituted or substituted heteroaryl, alkoxy, fluoroalkoxy, unsubstituted or substituted aryloxy, silyl, siloxy and deuterated analogs thereof; R3 is alkyl or unsubstituted or substituted carbocyclic aryl; a
    Type: Application
    Filed: February 8, 2021
    Publication date: August 26, 2021
    Inventors: VIACHESLAV V. DIEV, NORA SABINA RADU
  • Publication number: 20210017335
    Abstract: Disclosed is a polyimide having a repeat unit structure of Formula III In Formula III: Ra represents one or more different tetracarboxylic acid component residues; and Rb represents one or more different aromatic diamine residues or aromatic diisocyanate residues. 5-100 mol % of Ra has Formula II In Formula II: R is H, halogen, cyano, hydroxyl, alkyl, heteroalkyl, alkoxy, heteroalkoxy, fluoroalkyl, silyl, hydrocarbon aryl, substituted hydrocarbon aryl, heteroaryl, substituted heteroaryl, ally, or vinyl; R2 is halogen, cyano, hydroxyl, alkyl, heteroalkyl, alkoxy, heteroalkoxy, fluoroalkyl, silyl, hydrocarbon aryl, substituted hydrocarbon aryl, heteroaryl, substituted heteroaryl, ally, or vinyl; R3 and R4 are the same or different and are alkyl, fluoroalkyl, or silyl; x and y are the same or different and are an integer from 0-2; and * indicates a point of attachment.
    Type: Application
    Filed: April 1, 2019
    Publication date: January 21, 2021
    Inventors: Michael Henry Howard, Jr., Nora Sabina Radu, Greg A. Hostetler, Chai Kit Ngai, Brian C. Auman, John Donald Summers
  • Patent number: 10879467
    Abstract: A hole transport copolymer having the following Formula III is disclosed herein: In some embodiments, A is a monomeric unit having Formula Ia or Formula IIa, B is a B is a monomeric unit having at least three points of attachment in the copolymer, E is the same or different at each occurrence and is selected from the group consisting of H, D, halide, alkyl, aryl, arylamino, siloxane, crosslinkable groups, deuterated alkyl, deuterated aryl, deuterated arylamino, deuterated siloxane, and deuterated crosslinkable groups, and x, y, and z are the same or different and are mole fractions, such that x+y+z=1, and x and y are non-zero.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: December 29, 2020
    Inventors: Nora Sabina Radu, Kerwin D. Dobbs, Adam Fennimore, Weiying Gao, Gene M. Rossi, Juergen Weber
  • Patent number: 10749111
    Abstract: There is disclosed a compound having Formula I In Formula I: R1 and R2 are the same or different and are H or D; R3 is the same or different at each occurrence and D, CN, halogen, alkyl, alkoxy, silyl, germyl, deuterated alkyl, deuterated alkoxy, deuterated silyl, or deuterated germyl; a is an integer from 0-4; Q1 and Q2 are the same or different and are H, D, alkyl, deuterated alkyl, aryl, deuterated aryl, or a group having Formula II *-(L1)b-HT??(II) At least one of Q1 and Q2 is a group having Formula II. In Formula II: HT is the same or different at each occurrence and is a hole transport group; L1 is the same or different at each occurrence and is alkyl, aryl, substituted derivatives thereof, deuterated analogs thereof, or combinations thereof; b is the same or different at each occurrence and is 0 or 1; and * indicates a point of attachment.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: August 18, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Nora Sabina Radu, Adam Fennimore, Gene M. Rossi
  • Publication number: 20200216614
    Abstract: Disclosed is a polyimide film generated from a solution containing a polyamic acid in a high-boiling, aprotic solvent; wherein the polyamic acid comprises one or more tetracarboxylic acid components and one or more diamine components; and wherein at least one of the tetracarboxylic acid components is a quadrivalent organic group derived from a bent dianhydride or an aromatic dianhydride comprising —O—, —CO—, —NHCO—, —S—, —SO2—, —CO—O—, or —CR2— links, or a direct chemical bond between aromatic rings; and wherein at least one of the diamine components is a divalent organic group derived from a bent diamine or an aromatic diamine comprising the same links, or a direct chemical bond between aromatic rings; and wherein R is the same or different at each occurrence and is selected from the group consisting of H, F, alkyl, and fluoroalkyl.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 9, 2020
    Inventors: Brian C. Auman, John Donald Summers, Nora Sabina Radu, Chai Kit Ngai, Wayne Atkinson, Wei Li, Jonathan Timothy Maeyer
  • Publication number: 20200172675
    Abstract: Disclosed is a solution containing a polyamic acid in a high-boiling, aprotic solvent; wherein the polyamic acid contains two or more tetracarboxylic acid components and one or more diamine components; and wherein at least one of the tetracarboxylic acid components is a quadrivalent organic group derived from an aliphatic dianhydride. Polyimide films made from the solutions are also disclosed, as are their methods of production and uses in electronic devices.
    Type: Application
    Filed: August 8, 2018
    Publication date: June 4, 2020
    Inventors: Nora Sabina Radu, John Donald Summers, Brian C. Auman, Wayne Atkinson, Wei Li, Chai Kit Ngai
  • Patent number: 10586929
    Abstract: There is provided a hole transport material having Formula I, Formula Ia, or Formula II: In the formulae: A is an aromatic moiety including at least one triarylamino group; B? is an aromatic moiety; E is an end group which is H, D, alkyl, aryl, halide, deuterated alkyl, or deuterated aryl; G is G1, G2, or a deuterated analog thereof where the asterisk represents the point of attachment; n is an integer greater than 0; and m1 and m2 represent non-zero mole fractions, such that m1+m2=1.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: March 10, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Nora Sabina Radu, Adam Fennimore
  • Publication number: 20190348607
    Abstract: A hole transport copolymer having the following Formula III is disclosed herein: In some embodiments, A is a monomeric unit having Formula Ia or Formula IIa, B is a B is a monomeric unit having at least three points of attachment in the copolymer, E is the same or different at each occurrence and is selected from the group consisting of H, D, halide, alkyl, aryl, arylamino, siloxane, crosslinkable groups, deuterated alkyl, deuterated aryl, deuterated arylamino, deuterated siloxane, and deuterated crosslinkable groups, and x, y, and z are the same or different and are mole fractions, such that x+y+z=1, and x and y are non-zero.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Nora Sabina Radu, Kerwin D. Dobbs, Adam Fennimore, Weiying Gao, Gene M. Rossi, Juergen Weber
  • Patent number: 10439140
    Abstract: There is provided a hole transport polymer having a carbazole group and an amino nitrogen having Formula I In the formula: Ar1, Ar2, and Ar4 are the same or different and are substituted or unsubstituted aryl groups or deuterated aryl groups; Ar3 is substituted or unsubstituted aryl groups or deuterated aryl groups; E is the same or different at each occurrence and is selected from the group consisting of H, D, halide, alkyl, aryl, siloxane, deuterated alkyl, deuterated aryl, deuterated siloxane, and a crosslinking group; R1-R2 are the same or different at each occurrence and are selected from the group consisting of D, F, CN, alkyl, fluoroalkyl, aryl, heteroaryl, amino, silyl, germyl, alkoxy, aryloxy, fluoroalkoxy, siloxane, siloxy, deuterated alkyl, deuterated partially-fluorinated alkyl, deuterated aryl, deuterated heteroaryl, deuterated amino, deuterated silyl, deuterated germyl, deuterated alkoxy, deuterated aryloxy, deuterated fluoroalkoxy, deuterated siloxane, deuterated siloxy, and crosslinking gr
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Nora Sabina Radu, Kerwin D. Dobbs, Adam Fennimore, Weiying Gao, Gene M. Rossi, Juergen Weber
  • Publication number: 20190181344
    Abstract: There is disclosed a compound having Formula I In Formula, I: Ar1 is selected from the group consisting of dibenzofuran, dibenzothiophene, or deuterated analogs thereof; Ar2 and Ar3 are the same or different and are hydrocarbon aryl, substituted derivatives thereof, or deuterated analogs thereof, with the proviso that Ar2 and Ar3 are not the same as Ar1; a is 0; and Ar1, Ar2, and Ar3 have no additional amino substituents.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 13, 2019
    Inventors: Norman Herron, Weiying Gao, Nora Sabina Radu, Ying Wang
  • Publication number: 20190097137
    Abstract: Disclosed are electrically conductive polymer compositions, and their use in organic electronic devices.
    Type: Application
    Filed: May 25, 2017
    Publication date: March 28, 2019
    Inventors: Nora Sabina Radu, Arjan Zoombelt
  • Patent number: 10199577
    Abstract: There is disclosed a compound having Formula I or Formula I?: In Formula I and Formula I?: Ar1 and Ar2 are the same or different and are aryl groups; R1 through R5 are independently the same or different at each occurrence and are D, F, alkyl groups, aryl groups, alkoxy groups, silyl groups, or crosslinkable groups; R6 is H, D, or halogen; a through e are independently an integer from 0 to 4; f is 1 or 2; g is 0, 1 or 2; h is 1 or 2; and n is an integer greater than 0.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: February 5, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Kyung-Ho Park, Nora Sabina Radu, Gary A Johansson, Adam Fennimore, William J Delaney, Daniel David LeCloux
  • Patent number: 10134988
    Abstract: There is provided an electroactive system for forming an electroactive layer. The system includes: (a) a first electroactive material; (b) a facilitation additive; and (c) a first liquid medium. The facilitation additive is present during baking in an amount sufficient to enable the electroactive layer made therefrom to effectively resist mixing with a second liquid medium applied thereover after the electroactive system is deposited and baked at a temperature less than 350° C. for a predetermined time.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 20, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Adam Fennimore, Denis Yurievich Kondakov, Nora Sabina Radu
  • Publication number: 20180287067
    Abstract: There is disclosed a compound having Formula I In Formula I: R1 and R2 are the same or different and are H or D; R3 is the same or different at each occurrence and D, CN, halogen, alkyl, alkoxy, silyl, germyl, deuterated alkyl, deuterated alkoxy, deuterated silyl, or deuterated germyl; a is an integer from 0-4; Q1 and Q2 are the same or different and are H, D, alkyl, deuterated alkyl, aryl, deuterated aryl, or a group having Formula II *-(L1)b-HT??(II) At least one of Q1 and Q2 is a group having Formula II. In Formula II: HT is the same or different at each occurrence and is a hole transport group; L1 is the same or different at each occurrence and is alkyl, aryl, substituted derivatives thereof, deuterated analogs thereof, or combinations thereof; b is the same or different at each occurrence and is 0 or 1; and * indicates a point of attachment.
    Type: Application
    Filed: October 28, 2016
    Publication date: October 4, 2018
    Inventors: Nora Sabina Radu, Adam Fennimore, Gene M. Rossi
  • Patent number: 9972783
    Abstract: This invention relates to triarylamine compounds and compositions including such compounds, that are useful in electronic applications. It also relates to electronic devices in which the active layer includes such a compound or composition. The triarylamine compound can be present as a hole transport material in a hole transport layer. The triarylamine compound can also be present in a photoactive layer in combination with an organometallic compound capable of electroluminescence having an emission maximum between 380 and 750 nm.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: May 15, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Nora Sabina Radu, Jerald Feldman, Daniel David Lecloux, Ying Wang, Adam Fennimore, Kerwin D Dobbs, Gene M Rossi, Charles D McLaren, Frederick P Gentry