Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11739957 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Tsuraki Nakajima, Shingo Takenawa, Masahiro Yamaguchi +1 more | 2023-08-29 |
| 11609002 | Ventilation fan and ventilation system | Hirosato Sakai, Hidenori Syougen, Tsuraki Nakajima, Shingo Takenawa, Masahiro Yamaguchi +1 more | 2023-03-21 |