Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11149604 | Exhaust gas purification catalyst device | — | 2021-10-19 |
| 8650863 | Exhaust gas purification system for an internal combustion engine | Yuichi Sobue, Kohei Yoshida, Hiroshi Otsuki, Masahide Iida, Itsuya Kurisaka | 2014-02-18 |