Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11739957 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Nobuyuki Morimoto, Tsuraki Nakajima, Masahiro Yamaguchi +1 more | 2023-08-29 |
| 11609002 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Nobuyuki Morimoto, Tsuraki Nakajima, Masahiro Yamaguchi +1 more | 2023-03-21 |
| 11054158 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Nobuyuki Morimoto, Tsuraki Nakajima, Masahiro Yamaguchi +1 more | 2021-07-06 |
| 10302321 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Nobuyuki Morimoto, Tsuraki Nakajima, Masahiro Yamaguchi +1 more | 2019-05-28 |
| 10288305 | Ventilation apparatus | Tetsuya Nagase, Toshikazu Yoshizawa, Hiroyuki Kanou, Tsuraki Nakajima, Masahiro Yamaguchi | 2019-05-14 |
| 10041496 | Ventilation device | Tsuraki Nakajima, Harumoto Itou, Masahiro Yamaguchi, Kazuki Doumoto, Teikyo Ueno | 2018-08-07 |