HO

Hiroshi Ookuma

HC Hodogaya Chemical Co.: 3 patents #107 of 359Top 30%
KY Kyulux: 1 patents #44 of 91Top 50%
Overall (All Time): #1,132,063 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11741839 Traffic safety assistance device, mobile information terminal, and program 2023-08-29
10916711 Spiro compound having azafluorene ring structure, light-emitting material, and organic electroluminescent device Chihaya Adachi, Takuma Yasuda, Tetsuya Nakagawa, Katsuyuki Shizu 2021-02-09
9564600 Compound having an indolocarbazole ring structure and organic electroluminescent device Norimasa Yokoyama, Makoto Nagaoka, Sawa Izumi, Shuichi Hayashi 2017-02-07
9553272 Organic electroluminescent device Norimasa Yokoyama, Eiji Takahashi, Shuichi Hayashi, Daizou Kanda 2017-01-24