Inventor
CHA SOON-WOOK
KR41 patents
⚠️ This page may combine multiple inventors who share the name “CHA SOON-WOOK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SFC CO LTD
22 patentsUS10014479B2Jul 3, 2018
Organic light-emitting diode with high efficiency and long lifetime
SFC CO LTD11 citations83
US10797259B2Oct 6, 2020
Organic light-emitting diode with high efficiency
SFC CO LTD3 citations72
US10468603B2Nov 5, 2019
Organic light-emitting diode having low driving voltage and long lifespan
SFC CO LTD7 citations72
US10950802B2Mar 16, 2021
Organic light-emitting diode with high efficiency
SFC CO LTD3 citations71
US10693084B2Jun 23, 2020
Compound for organic light-emitting device and organic light-emitting device including same
SFC CO LTD3 citations71
US12581854B2Mar 17, 2026
Organic light emitting diode for high efficiency
SFC CO LTD0 citations61
US10998505B2May 4, 2021
Organic light emitting diode for high efficiency
SFC CO LTD0 citations61
US10947449B2Mar 16, 2021
Organic light-emitting diode with high efficiency and long lifetime
SFC CO LTD2 citations61
US10562876B2Feb 18, 2020
Organic compounds for organic light-emitting diode and organic light-emitting diode including the same
SFC CO LTD1 citations61
US12428429B2Sep 30, 2025
Amine compound and organic light-emitting diode including same
SFC CO LTD0 citations51
US12010915B2Jun 11, 2024
Organic light-emitting diode having long lifespan, low voltage, and high efficiency property
SFC CO LTD0 citations51
US11133472B1Sep 28, 2021
Organic light-emitting diode having long lifespan, low voltage, and high efficiency property
SFC CO LTD0 citations51
US12284914B2Apr 22, 2025
Organic light-emitting compound and organic light-emitting diode comprising same
SFC CO LTD0 citations50
US11723265B2Aug 8, 2023
Organic light emitting diode with high efficiency
SFC CO LTD0 citations50
US11683980B2Jun 20, 2023
Condensed fluorene derivative comprising heterocyclic ring
SFC CO LTD0 citations50
US11672172B2Jun 6, 2023
Heterocyclic compound comprising aromatic amine group and organic light-emitting diode including the same
SFC CO LTD0 citations50
US11532792B2Dec 20, 2022
Organic light emitting diode having high efficiency
SFC CO LTD0 citations50
US11279693B2Mar 22, 2022
Organic heterocyclic compound and light-emitting diode comprising same
SFC CO LTD0 citations50
US11482676B2Oct 25, 2022
Light emitting diode including boron compound
SFC CO LTD0 citations49
US12114562B2Oct 8, 2024
Compound for organic light-emitting diode and long lifespan organic light-emitting diode comprising same
SFC CO LTD0 citations48
US11563181B2Jan 24, 2023
Amine compounds for organic light-emitting diode and organic light-emitting diode including the same
SFC CO LTD0 citations47
US9991449B2Jun 5, 2018
Anthracene derivatives for organic light-emitting diode and organic light-emitting diode including the same
SFC CO LTD0 citations40
HODOGAYA CHEMICAL CO LTD
5 patentsUS11158811B2Oct 26, 2021
Organic electroluminescent device
HODOGAYA CHEMICAL CO LTD1 citations61
US10497876B2Dec 3, 2019
Organic electroluminescent device
HODOGAYA CHEMICAL CO LTD1 citations61
US10693078B2Jun 23, 2020
Organic electroluminescent device
HODOGAYA CHEMICAL CO LTD1 citations60
US10892420B2Jan 12, 2021
Organic electroluminescent device
HODOGAYA CHEMICAL CO LTD0 citations50
US10566540B2Feb 18, 2020
Organic electroluminescent device
HODOGAYA CHEMICAL CO LTD0 citations40