Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11092162 | Centrifugal blower | Fumiya ISHII, Masanori Yasuda | 2021-08-17 |
| 11085459 | Centrifugal blower | Fumiya ISHII, Shouichi Imahigashi | 2021-08-10 |
| 11015610 | Centrifugal blower | Fumiya ISHII, Masanori Yasuda | 2021-05-25 |