Inventor
ITOI HIROAKI
JP70 patents
⚠️ This page may combine multiple inventors who share the name “ITOI HIROAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAMSUNG DISPLAY CO LTD
36 patentsUS9590186B2Mar 7, 2017
Material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD15 citations92
US10923663B2Feb 16, 2021
Monoamine compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD7 citations83
US10879471B2Dec 29, 2020
Organic electroluminescence device and amine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD6 citations83
US10079348B2Sep 18, 2018
Material for organic electroluminescent device and organic electroluminescent device comprising same
SAMSUNG DISPLAY CO LTD6 citations83
US11871656B2Jan 9, 2024
Organic electroluminescence device and monoamine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD5 citations74
US11805697B2Oct 31, 2023
Organic electroluminescence device and monoamine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD4 citations74
US10689568B2Jun 23, 2020
Organic electroluminescent device
SAMSUNG DISPLAY CO LTD2 citations73
US10184078B2Jan 22, 2019
Organic electroluminescent device
SAMSUNG DISPLAY CO LTD2 citations73
US9966536B2May 8, 2018
Organic electroluminescence device
SAMSUNG DISPLAY CO LTD3 citations73
US9929355B2Mar 27, 2018
Amine compound and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD4 citations73
US9899601B2Feb 20, 2018
Material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD2 citations73
US11716901B2Aug 1, 2023
Organic electroluminescence device and amine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD2 citations72
US11165029B2Nov 2, 2021
Amine compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD2 citations72
US11133470B2Sep 28, 2021
Organic electroluminescent device
SAMSUNG DISPLAY CO LTD3 citations72
US11050025B2Jun 29, 2021
Material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD2 citations72
US9660202B2May 23, 2017
Organic electroluminescence device
SAMSUNG DISPLAY CO LTD2 citations71
US9000171B2Apr 7, 2015
Organic electroluminescence material including a substituted acridine compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD2 citations63
US12550609B2Feb 10, 2026
Material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD0 citations62
US12459911B2Nov 4, 2025
Organic electroluminescence device and monoamine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD0 citations62
US12410120B2Sep 9, 2025
Organic light emitting device
SAMSUNG DISPLAY CO LTD0 citations62
US11925111B2Mar 5, 2024
Organic light emitting device
SAMSUNG DISPLAY CO LTD0 citations62
US11165026B2Nov 2, 2021
Heterocyclic compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations62
US11145819B2Oct 12, 2021
Organic light emitting device
SAMSUNG DISPLAY CO LTD0 citations62
US11101442B2Aug 24, 2021
Organic electroluminescence device and amine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD1 citations62
US9902901B2Feb 27, 2018
Organic electroluminescent device
SAMSUNG DISPLAY CO LTD1 citations62
US11575086B2Feb 7, 2023
Monoamine compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations61
US10741774B2Aug 11, 2020
Heterocyclic compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations52
US10385262B2Aug 20, 2019
Organic electroluminescent device
SAMSUNG DISPLAY CO LTD0 citations52
US10290813B2May 14, 2019
Material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD0 citations52
US10147886B2Dec 4, 2018
Organic electroluminescent material and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD0 citations52
US9947875B2Apr 17, 2018
Amine derivatives, material for organic electroluminescent device and organic electroluminescent device including the same
SAMSUNG DISPLAY CO LTD1 citations52
US9318711B2Apr 19, 2016
Organic electroluminescence materials comprising substituted carbazoles and organic electroluminescence devices having the same
SAMSUNG DISPLAY CO LTD0 citations52
US9172047B2Oct 27, 2015
Hole transport material for organic electroluminescence device and organic electroluminescence device using the same
SAMSUNG DISPLAY CO LTD0 citations52
US9000164B2Apr 7, 2015
Organic electroluminescence material including a substituted phenazine group and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations52
US12096682B2Sep 17, 2024
Organic electroluminescence device and monoamine compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD0 citations51
US10734586B2Aug 4, 2020
Organic light emitting device
SAMSUNG DISPLAY CO LTD0 citations51
IDEMITSU KOSAN CO
12 patentsUS11482675B1Oct 25, 2022
Organic electroluminescence device and electronic apparatus
IDEMITSU KOSAN CO7 citations73
US11094886B2Aug 17, 2021
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO4 citations73
US12477945B2Nov 18, 2025
Organic electroluminescence device and electronic apparatus equipped with the same
IDEMITSU KOSAN CO1 citations64
US12284916B2Apr 22, 2025
Organic electroluminescence device and electronic apparatus provided with the same
IDEMITSU KOSAN CO1 citations64
US12317740B2May 27, 2025
Organic electroluminescence device and electronic apparatus
IDEMITSU KOSAN CO0 citations62
US11839148B2Dec 5, 2023
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations62
US11600780B1Mar 7, 2023
Organic electroluminescence device and electronic apparatus
IDEMITSU KOSAN CO0 citations62
US11527720B1Dec 13, 2022
Organic electroluminescence device, electronic device, and compound
IDEMITSU KOSAN CO1 citations56
US12516240B2Jan 6, 2026
Compound, organic electroluminescence device using the same, and electronic apparatus
IDEMITSU KOSAN CO0 citations52
US12356850B2Jul 8, 2025
Compound, and organic electroluminescence device and electronic apparatus using the same
IDEMITSU KOSAN CO0 citations52
US12133462B2Oct 29, 2024
Organic electroluminescence device and electronic apparatus equipped with the same
IDEMITSU KOSAN CO0 citations52
US11678569B2Jun 13, 2023
Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device
IDEMITSU KOSAN CO0 citations52
TOKYO ROPE MFG CO
2 patentsShowing the top 50 of 70 patents by PatentIndex Score.