Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11184297 | Relay device | Yoshifumi Kaku | 2021-11-23 |
| 11171871 | Relay apparatus | Yoshifumi Kaku | 2021-11-09 |
| 11146496 | Relay device | Yoshifumi Kaku | 2021-10-12 |
| 11128577 | Relay apparatus | Yoshifumi Kaku | 2021-09-21 |
| 10958475 | Repeater device | Yoshifumi Kaku | 2021-03-23 |