KO

Keiji Okinaka

IC Idemitsu Kosan Co.: 2 patents #28 of 111Top 30%
Overall (2023): #136,576 of 537,848Top 30%
2
Patents 2023

Issued Patents 2023

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11739061 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida 2023-08-29
11730052 Light-emitting device Toshinari Ogiwara, Yoshikazu Tanaka 2023-08-15