Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738019 | Compound including basic dye and amino acid, hair dyeing dye, and hair dyeing composition | Keigo Naito, Yasuaki Miyazaki, Katsumi Abe | 2020-08-11 |
| 9985216 | Indenoindole derivative and organic electroluminescent element | Makoto Nagaoka, Norimasa Yokoyama, Si-In KIM, Shigeru Kusano | 2018-05-29 |
| 9871210 | Naphthotriazole derivatives and organic electroluminescence devices | Makoto Nagaoka, Mari Toriya, Shingo Ozawa, Shigeru Kusano | 2018-01-16 |
| 9842999 | Benzotriazole derivative and an organic electroluminescent device | Makoto Nagaoka, Kanae OTSUKA, Shigeru Kusano | 2017-12-12 |
| 9123897 | Benzotriazole derivatives and organic electroluminescent devices using the derivatives | Norimasa Yokoyama, Shirou Irisa, Shuichi Hayashi | 2015-09-01 |
| 8722288 | Diphenylnaphthylamine derivatives | Katsumi Abe, Makoto Koike, Kiyotaka Ihara | 2014-05-13 |