Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10697619 | Surface light emission system, lighting system, and lighting space reproduction method | Shozo Toyohisa, Harunobu Izumo, Youichi Yamaguchi | 2020-06-30 |
| 10697627 | Illumination apparatus | Koichi Fukushima, Toyohisa Shozo, Youichi Yamaguchi | 2020-06-30 |