Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9005776 | Compound having benzotriazole ring structure and organic electroluminescent element | Norimasa Yokoyama, Shuichi Hayashi, Yoshio Taniguchi, Musubu Ichikawa, Shunji Mochiduki | 2015-04-14 |
| 8927119 | Compound having substituted anthracene ring structure and pyridoindole ring structure, and organic electroluminescent device | Norimasa Yokoyama, Shuichi Hayashi, Daizou Kanda, Shigeru Kusano | 2015-01-06 |
| 8852759 | Compound having acridan ring structure, and organic electroluminescent device | Norimasa Yokoyama, Makoto Nagaoka, Eiji Takahashi | 2014-10-07 |
| 8586210 | Compound having substituted anthracene ring structure and pyridoindole ring structure and organic electroluminescence device | Norimasa Yokoyama, Shuichi Hayashi, Sawa Izumi, Shigeru Kusano | 2013-11-19 |