HK

Hitoshi Kuma

IC Idemitsu Kosan Co.: 3 patents #14 of 111Top 15%
Overall (2023): #78,087 of 537,848Top 15%
3
Patents 2023

Issued Patents 2023

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11856808 Organic electroluminescent element and electronic device drivable at low voltage with improved lifetime Masato Nakamura, Emiko Kambe, Hiroaki TOYOSHIMA, Kazuki Nishimura 2023-12-26
11739061 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2023-08-29
11552251 Organic electroluminescent element and electronic device Ryota Takahashi, Tomoki Kato, Hirokatsu Ito, Masahiro Kawamura, Masakazu Funahashi +4 more 2023-01-10