KY

Keiichi YASUKAWA

IC Idemitsu Kosan Co.: 3 patents #10 of 106Top 10%
📍 Chiyoda, JP: #7 of 97 inventorsTop 8%
Overall (2025): #55,616 of 469,880Top 15%
3
Patents 2025

Issued Patents 2025

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
12421450 Compounds, materials for organic electroluminescent devices, organic electroluminescent devices, and electronic devices Hiromi Nakano, Hisato MATSUMOTO, Toshinari Ogiwara 2025-09-23
12274168 Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic appliance Shota SAWANO, Hiromi Nakano, Takushi SHIOMI 2025-04-08
12200961 Organic electroluminescence element, display device, and electronic apparatus Kazuki Nishimura, Toshinari Ogiwara, Keiji Okinaka 2025-01-14