Inventor
AHN HEE-CHOON
KR16 patents
⚠️ This page may combine multiple inventors who share the name “AHN HEE-CHOON”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM & HAAS ELECT MATERIALS KOREA LTD
15 patentsUS10886474B2Jan 5, 2021
Organic electroluminescent compound, and organic electroluminescent material and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD3 citations72
US11917907B2Feb 27, 2024
Organic electroluminescent device
ROHM & HAAS ELECT MATERIALS KOREA LTD1 citations61
US10319918B2Jun 11, 2019
Organic electroluminescent compound and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD1 citations61
US12391875B2Aug 19, 2025
Organic electroluminescent compounds and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations60
US11807788B2Nov 7, 2023
Organic electroluminescent compounds and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations60
US11527728B2Dec 13, 2022
Organic electroluminescent compounds and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD1 citations60
US12457899B2Oct 28, 2025
Multi-component host material and an organic electroluminescence device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations51
US12402531B2Aug 26, 2025
Multi-component host material and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations51
US11930704B2Mar 12, 2024
Organic electroluminescent device comprising an electron buffer layer and an electron transport layer
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations51
US11394000B2Jul 19, 2022
Electron buffering materials, electron transport materials and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations51
US10633583B2Apr 28, 2020
Organic electroluminescent compounds and an organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations51
US10069086B2Sep 4, 2018
Plurality of host materials and an organic electroluminescence device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD1 citations51
US9768394B2Sep 19, 2017
Organic electroluminescent compound and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD1 citations51
US10529933B2Jan 7, 2020
Organic electroluminescent compounds and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations50
US11800796B2Oct 24, 2023
Luminescent material for delayed fluorescence and organic electroluminescent device comprising the same
ROHM & HAAS ELECT MATERIALS KOREA LTD0 citations49