Patents by Inventor Hyoyoung Lee

Hyoyoung Lee 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).

  • Heterocyclic compound and organic light-emitting device including the same
    Patent number: 10069085
    Abstract: A heterocyclic compound is represented by Formula 1: wherein, in Formula 1, R1 to R4, R11, ring A1, L1, Ar1, c11, a1, and b1 are as defined in the specification.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: September 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyoyoung Lee, Youngkook Kim, Junha Park, Munki Sim, Eunjae Jeong, Seokhwan Hwang
  • Optical fiber containing graphene oxide and reduced graphene oxide and a gas sensor containing the same
    Patent number: 10067064
    Abstract: An optical fiber includes a graphene oxide and a reduced graphene oxide and a gas sensor includes the optical fiber. A method for manufacturing the optical fiber includes coating a graphene oxide layer and reducing a part of the graphene oxide layer, and a method for manufacturing the gas sensor includes coating a graphene oxide layer and reducing a part of the graphene oxide layer.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: September 4, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Hyoyoung Lee, Surajit Some
  • Functionalized reduced graphene oxide and methods of producing the same
    Patent number: 10046972
    Abstract: Functionalized reduced graphene oxide (functionalized rGO), and a method of producing the same are provided. The functionalized reduced graphene oxide comprises reduced graphene oxide which is fluorinated and co-doped with at least one co-dopant selected from the group consisting of B, N and S.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: August 14, 2018
    Assignee: Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventor: Hyoyoung Lee
  • FUNCTIONALIZED REDUCED GRAPHENE OXIDE AND METHODS OF PRODUCING THE SAME
    Publication number: 20180208468
    Abstract: Functionalized reduced graphene oxide (functionalized rGO), and a method of producing the same are provided.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventor: Hyoyoung LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20180198074
    Abstract: Provided are a heterocyclic compound and an organic light-emitting device including the same.
    Type: Application
    Filed: August 1, 2017
    Publication date: July 12, 2018
    Inventors: Hyoyoung LEE, Junha PARK, Munki SIM, Eunjae JEONG, Youngkook KIM, Seokhwan HWANG
  • CONDENSED CYCLIC COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE INCLUDING THE SAME
    Publication number: 20180166639
    Abstract: A condensed cyclic compound which improves emission life and efficiency and an organic electroluminescence device is provided. The condensed cyclic compound according to the inventive concept is represented by the following where each of X, Y and Z is independently a substituted or unsubstituted pentagonal hydrocarbon ring, a substituted or unsubstituted hexagonal hydrocarbon ring, a substituted or unsubstituted pentagonal heterocycle, or a substituted or unsubstituted hexagonal heterocycle, the pentagonal heterocycle and the hexagonal heterocycle each independently includes one heteroatom, each of a and b is independently 0 or 1, and Ar1 is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms for forming a ring.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 14, 2018
    Inventors: Junha PARK, Mun-ki SIM, Hyoyoung LEE, Eunjae JEONG, Youngkook KIM, Seokhwan HWANG
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20180166635
    Abstract: A condensed cyclic compound and an organic light-emitting device including the same, the condensed cyclic compound being represented by Formula 1:
    Type: Application
    Filed: June 21, 2017
    Publication date: June 14, 2018
    Inventors: Eunjae JEONG, Junha PARK, Munki SIM, Hyoyoung LEE, Youngkook KIM, Seokhwan HWANG
  • TWO-DIMENSIONAL TRANSITION METAL CHALCOGENIDE NANOSTRUCTURE, DEVICE INCLUDING THE SAME, AND METHOD OF PREPARING THE TWO-DIMENSIONAL TRANSITION METAL CHALCOGENIDE NANOSTRUCTURE
    Publication number: 20180148334
    Abstract: Example embodiments relate to a method of preparing a two-dimensional (2D) transition metal chalcogenide nanostructure, the method including preparing a 2D transition metal chalcogenide nanostructure by a reaction between a transition metal precursor and a chalcogen precursor in a composition including a solvent, wherein the chalcogen precursor is a compound including a first bond connecting two neighboring chalcogen elements and the second bond connecting one of the two neighboring chalcogen elements and a hetero-element adjacent thereto, and binding energy of the second bond is 110% or less of the binding energy of the first bond, a 2D transition metal chalcogenide nanostructure prepared thereby, and a device including the 2D transition metal chalcogenide nanostructure.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 31, 2018
    Applicants: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Hyeonjin Shin, Meeree Kim, Hyoyoung Lee, Yunhee Cho
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20180097186
    Abstract: A condensed cyclic compound and an organic light-emitting device including the same are provided. The organic light-emitting device includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer includes the condensed cyclic compound represented by Formula 1: in Formula 1, A11 is a C1-C60 heterocyclic group, A12 is a C5-C60 carbocyclic group or a C1-C60 heterocyclic group, X11 is O or S, X12 is C, X13 is selected from N, C, and C(R13), X14 is selected from N, C, and C(R14), and X13 and X14 are linked via a single bond or a double bond.
    Type: Application
    Filed: August 23, 2017
    Publication date: April 5, 2018
    Inventors: MUNKI SIM, Junha Park, Hyoyoung Lee, Eunjae Jeong, Youngkook Kim, Seokhwan Hwang
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20180019406
    Abstract: A heterocyclic compound is represented by Formula 1: wherein, in Formula 1, R1 ro R4, R11, ring A1, L1, Ar1, c11, a1, and b1 are as defined in the specification.
    Type: Application
    Filed: February 6, 2017
    Publication date: January 18, 2018
    Inventors: Hyoyoung LEE, Youngkook KIM, Junha PARK, Munki SIM, Eunjae JEONG, Seokhwan HWANG
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20180019410
    Abstract: A heterocyclic compound and an organic light-emitting device including the same are provided, the heterocyclic compound being represented by <Formula 1>
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Inventors: Munki SIM, Junha PARK, Hyoyoung LEE, Eunjae JEONG, Youngkook KIM, Seokhwan HWANG
  • CONDENSED CYCLIC COMPOUND AND AN ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170365794
    Abstract: A condensed cyclic compound represented by Formula 1 and an organic light-emitting device including the same.
    Type: Application
    Filed: December 30, 2016
    Publication date: December 21, 2017
    Inventors: JUNHA PARK, Youngkook Kim, Munki Sim, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • CONDENSED CYCLIC COMPOUND AND AN ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170365792
    Abstract: A condensed cyclic compound represented by Formula 1 and an organic light-emitting apparatus including the same.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 21, 2017
    Inventors: JUNHA PARK, Youngkook Kim, Munki Sim, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170338419
    Abstract: A heterocyclic compound and an organic light-emitting device including the same, the compound being represented by Formula 1: A1-(A2)a21,??<Formula 1> wherein, in Formula 1, A1 is a group represented by Formula 2, A2 is a group represented by Formula 3, and a21 is an integer of 1 to 11, wherein, when a21 is 2 to 11, two or more of A2 are identical to or different from each other:
    Type: Application
    Filed: April 25, 2017
    Publication date: November 23, 2017
    Inventors: Munki SIM, Youngkook KIM, Junha PARK, Hyoyoung LEE, Eunjae JEONG, Seokhwan HWANG
  • Graphene quantum dot and preparing method of the same
    Patent number: 9758380
    Abstract: The present disclosure relates to graphene quantum dot and a method for preparing the graphene quantum dot.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 12, 2017
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Hyoyoung Lee, Yong Hun Shin, Daesun Hyun, Jintaek Park, Kyoung Soo Kim
  • COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170186979
    Abstract: A compound is represented by Formula 1 and an organic light-emitting device including the same: wherein Formula 1 is the same as described above.
    Type: Application
    Filed: December 29, 2016
    Publication date: June 29, 2017
    Inventors: Junha PARK, Eunyoung LEE, Youngkook KIM, Munki SIM, Hyoyoung LEE, Eunjae JEONG, Seokhwan HWANG
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170179407
    Abstract: Provided are a condensed cyclic compound and an organic light-emitting device. The condensed cyclic compound is represented by Formula 1: Details about the constituents of Formula 1 is disclosed.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 22, 2017
    Inventors: Junha PARK, Youngkook KIM, Munki SIM, Eunyoung LEE, Hyoyoung LEE, Eunjae JEONG, Seokhwan HWANG
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170155057
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode, the organic layer including the condensed cyclic compound of Formula 1:
    Type: Application
    Filed: June 21, 2016
    Publication date: June 1, 2017
    Inventors: Munki Sim, Youngkook Kim, Junha Park, Eunyoung Lee, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING SAME
    Publication number: 20170133601
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound represented by Formula 1. The organic light-emitting device including the compound may have high efficiency, low voltage, high luminance, and a long lifespan.
    Type: Application
    Filed: June 10, 2016
    Publication date: May 11, 2017
    Inventors: Munki Sim, Youngkook Kim, Junha Park, Eunyoung Lee, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
    Publication number: 20170125696
    Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer that is between the first electrode and the second electrode and includes an emission layer, wherein the organic layer includes a compound represented by Formula 1: When compounds represented by Formula 1 are used as an electron transport material, excellent I-V-L characteristics may be obtained.
    Type: Application
    Filed: June 9, 2016
    Publication date: May 4, 2017
    Inventors: Junha Park, Youngkook Kim, Munki Sim, Eunyoung Lee, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang