Inventor
CHOI DAE-HYUK
KR24 patents
⚠️ This page may combine multiple inventors who share the name “CHOI DAE-HYUK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LT MATERIALS CO LTD
17 patentsUS11515484B2Nov 29, 2022
Heterocyclic compound and organic light emitting element comprising same
LT MATERIALS CO LTD3 citations69
US10644244B2May 5, 2020
Heterocyclic compound and organic light emitting device using same
LT MATERIALS CO LTD1 citations61
US11891361B2Feb 6, 2024
Heterocyclic compound and organic light emitting device comprising same
LT MATERIALS CO LTD0 citations60
US11665961B2May 30, 2023
Heterocyclic compound and organic light emitting device using same
LT MATERIALS CO LTD0 citations60
US11552255B2Jan 10, 2023
Heterocyclic compound and organic light-emitting element using same
LT MATERIALS CO LTD0 citations60
US11434228B2Sep 6, 2022
Heterocyclic compound and organic light emitting device comprising same
LT MATERIALS CO LTD1 citations60
US11563185B2Jan 24, 2023
Heterocyclic compound and organic light-emitting device comprising same
LT MATERIALS CO LTD0 citations51
US11302873B2Apr 12, 2022
Organic light-emitting device
LT MATERIALS CO LTD0 citations50
US11248008B2Feb 15, 2022
Heterocyclic compound and organic light emitting element using same
LT MATERIALS CO LTD0 citations50
US10672993B2Jun 2, 2020
Nitrogen-containing polycyclic compound and organic light emitting element using same
LT MATERIALS CO LTD0 citations50
US11678576B2Jun 13, 2023
Heterocyclic compound and organic light emitting element comprising same
LT MATERIALS CO LTD0 citations49
US11476425B2Oct 18, 2022
Heterocyclic compound and organic light emitting element comprising same
LT MATERIALS CO LTD0 citations49
US11427562B2Aug 30, 2022
Heterocyclic compound, and organic light-emitting device using same
LT MATERIALS CO LTD0 citations49
US11362282B2Jun 14, 2022
Heterocyclic compound and organic light emitting element comprising same
LT MATERIALS CO LTD0 citations49
US11239427B2Feb 1, 2022
Heterocyclic compound and organic light emitting device using same
LT MATERIALS CO LTD0 citations49
US11133477B2Sep 28, 2021
Heterocyclic compound and organic light emitting element using same
LT MATERIALS CO LTD0 citations49
US10930857B2Feb 23, 2021
Heterocyclic compound and organic light emitting device using same
LT MATERIALS CO LTD0 citations49
HEESUNG MAT LTD
7 patentsUS9728731B2Aug 8, 2017
Heterocyclic compound and organic light emitting device using same
HEESUNG MAT LTD9 citations82
US10446765B2Oct 15, 2019
Heterocyclic compound and organic light emitting element using same
HEESUNG MAT LTD5 citations72
US10177319B2Jan 8, 2019
Nitrogen-containing polycyclic compound and organic light emitting element using same
HEESUNG MAT LTD5 citations70
US10026908B2Jul 17, 2018
Hetero-cyclic compound and organic light emitting device using the same
HEESUNG MAT LTD4 citations70
US10381577B2Aug 13, 2019
Hetero-cyclic compound and organic light emitting device using the same
HEESUNG MAT LTD3 citations69
US10344030B2Jul 9, 2019
Heterocyclic compound and organic light emitting device using same
HEESUNG MAT LTD1 citations60
US10454043B2Oct 22, 2019
Heterocyclic compound and organic light-emitting element using same
HEESUNG MAT LTD0 citations37