Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10962254 | Ventilation device | Kazuhiro Ito, Shigeo Takata, Koji RIKUKAWA | 2021-03-30 |
| 10965498 | Communication relay apparatus and air-conditioning system | Katsuhiro Hirose, Kazuo Maeda, Koji RIKUKAWA | 2021-03-30 |
| 10895389 | Air-conditioning apparatus | Daisuke Abe | 2021-01-19 |