Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11174623 | Flow rate control valve | Yuji Fukuda, Yasushi Otagaki | 2021-11-16 |
| 11053664 | Hydraulic system for working machine | Yuji Fukuda, Keigo Honda | 2021-07-06 |
| 10982413 | Hydraulic system for working machine | Yuji Fukuda, Keigo Honda | 2021-04-20 |
| 10968923 | Hydraulic system for working machine and control valve | Yuji Fukuda, Keigo Honda | 2021-04-06 |