Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9564600 | Compound having an indolocarbazole ring structure and organic electroluminescent device | Norimasa Yokoyama, Makoto Nagaoka, Hiroshi Ookuma, Shuichi Hayashi | 2017-02-07 |
| 8624228 | Compound having pyridoindole ring structure bonded with substituted pyridyl group, and organic electroluminescent device | Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano | 2014-01-07 |
| 8586210 | Compound having substituted anthracene ring structure and pyridoindole ring structure and organic electroluminescence device | Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Shigeru Kusano | 2013-11-19 |
| 8377573 | Compound having substituted pyridyl group and pyridoindole ring structure linked through phenylene group, and organic electroluminescent device | Norimasa Yokoyama, Shuichi Hayashi, Shigeru Kusano | 2013-02-19 |