Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11708776 | Exhaust gas processing device | Shunichi Mitsuishi, Takaharu Yamamoto, Satoru Yokoshima, Tooru Hisanaga, Daisuke Shimamura | 2023-07-25 |
| 11473466 | Exhaust gas processing device | Shunichi Mitsuishi, Takaharu Yamamoto, Satoru Yokoshima, Tooru Hisanaga, Daisuke Shimamura | 2022-10-18 |
| 11434804 | Exhaust purification device | Tooru Hisanaga, Tomoyuki Igarashi, Hitoshi Shimonosono | 2022-09-06 |
| 6874317 | Double pipe exhaust manifold | Katsumi Amada, Satoshi Azuma | 2005-04-05 |
| 6625979 | Double pipe exhaust manifold | Katsumi Amada | 2003-09-30 |