Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10519961 | Ventilation device | Tsuraki Nakajima, Harumoto Itou, Yuusuke URATA | 2019-12-31 |
| 10302321 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Nobuyuki Morimoto, Tsuraki Nakajima, Shingo Takenawa +1 more | 2019-05-28 |