Inventor
YASUKAWA KEIICHI
JP8 patents
Patents
8 patentsUS12435269B2Oct 7, 2025
Organic electroluminescent element and electronic appliance
IDEMITSU KOSAN CO0 citations61
US11201297B2Dec 14, 2021
Organic electroluminescence device and electronic device
IDEMITSU KOSAN CO1 citations61
US12200961B2Jan 14, 2025
Organic electroluminescence element, display device, and electronic apparatus
IDEMITSU KOSAN CO0 citations51
US12421450B2Sep 23, 2025
Compounds, materials for organic electroluminescent devices, organic electroluminescent devices, and electronic devices
IDEMITSU KOSAN CO0 citations49
US12446463B2Oct 14, 2025
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations48
US11944009B2Mar 26, 2024
Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device
IDEMITSU KOSAN CO0 citations48
US11482681B2Oct 25, 2022
Compound, material for organic electroluminescence element, organic electroluminescence element, and electronic device
IDEMITSU KOSAN CO0 citations48
US12274168B2Apr 8, 2025
Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic appliance
IDEMITSU KOSAN CO0 citations47