Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10302002 | Deterioration diagnosis apparatus for exhaust gas purification apparatus | Koji Hagiwara, Toru Kidokoro, Yasushi Iwazaki | 2019-05-28 |
| 9512796 | Exhaust purification apparatus for internal combustion engine | Takashi Tsunooka | 2016-12-06 |