Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11092099 | Control apparatus | Ryozo Kayama, Yusuke Todo, Manabu Yoshidome | 2021-08-17 |
| 11054388 | Gas sensor control device | Tadakatsu KOYABU, Tomoo Kawase, Ryozo Kayama, Akari Hasegawa, Shoki SHIMIZU | 2021-07-06 |
| 11035283 | Control apparatus | Ryozo Kayama, Yusuke Todo, Manabu Yoshidome | 2021-06-15 |