Inventor
YASUDA TAKUMA
JP27 patents
⚠️ This page may combine multiple inventors who share the name “YASUDA TAKUMA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIV KYUSHU NAT UNIV CORP
10 patentsUS9153788B2Oct 6, 2015
Organic light-emitting device, and delayed fluorescent material and compound used therefor
UNIV KYUSHU NAT UNIV CORP16 citations84
US9685615B2Jun 20, 2017
Light emitting material, delayed fluorescent emitter, organic light emitting device, and compound
UNIV KYUSHU NAT UNIV CORP8 citations82
US9634262B2Apr 25, 2017
Charge transport material, host material, thin film and organic light emitting element
UNIV KYUSHU NAT UNIV CORP10 citations82
US9502668B2Nov 22, 2016
Organic light-emitting device, and light-emitting material and compound used therefor
UNIV KYUSHU NAT UNIV CORP12 citations81
US10497878B2Dec 3, 2019
Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine
UNIV KYUSHU NAT UNIV CORP1 citations71
US11279680B2Mar 22, 2022
Dicyano N-heterocyclic compound, light-emitting material, and light-emitting element in which same is used
UNIV KYUSHU NAT UNIV CORP0 citations62
US12122768B2Oct 22, 2024
Benzonitrile derivative, light-emitting material, and light-emitting element using same
UNIV KYUSHU NAT UNIV CORP0 citations57
US12497363B2Dec 16, 2025
Isophthalonitrile compound, luminescent material and luminescent element using the same
UNIV KYUSHU NAT UNIV CORP0 citations55
US10522763B2Dec 31, 2019
Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine
UNIV KYUSHU NAT UNIV CORP0 citations50
US10399960B2Sep 3, 2019
Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine
UNIV KYUSHU NAT UNIV CORP0 citations50
SAMSUNG DISPLAY CO LTD
5 patentsUS11545631B2Jan 3, 2023
Organic electroluminescence device and polycyclic compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD0 citations58
US12178123B2Dec 24, 2024
Organic electroluminescence device and compound for organic electroluminescence device
SAMSUNG DISPLAY CO LTD0 citations47
US12365683B2Jul 22, 2025
Light emitting device and fused polycyclic compound for light emitting device
SAMSUNG DISPLAY CO LTD0 citations46
US10714693B2Jul 14, 2020
Polycyclic compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations41
US10686139B2Jun 16, 2020
Nitrogen-containing compound and organic electroluminescence device including the same
SAMSUNG DISPLAY CO LTD0 citations39
KYULUX INC
4 patentsUS10381573B2Aug 13, 2019
Light-emitting material, organic light-emitting device, and compound
KYULUX INC3 citations71
US10276803B2Apr 30, 2019
Organic light-emitting device, and light-emitting material and compound used therefor
KYULUX INC2 citations71
US10934248B2Mar 2, 2021
Light-emitting material, organic light-emitting device, and compound
KYULUX INC0 citations60
US10497883B2Dec 3, 2019
Organic light-emitting device, host material, light-emitting material, and compound
KYULUX INC1 citations57
HODOGAYA CHEMICAL CO LTD
3 patentsUS11283026B2Mar 22, 2022
Compound having tetraazatriphenylene ring structure, light-emitting material, and organic electroluminescent device
HODOGAYA CHEMICAL CO LTD2 citations72
US10032995B2Jul 24, 2018
Compound having diazatriphenylene ring structure, and organic electroluminescent device
HODOGAYA CHEMICAL CO LTD3 citations72
US10916711B2Feb 9, 2021
Spiro compound having azafluorene ring structure, light-emitting material, and organic electroluminescent device
HODOGAYA CHEMICAL CO LTD0 citations50