Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11703018 | Exhaust heat recovery device | Tooru Hisanaga, Naoharu Chiba | 2023-07-18 |
| 11105243 | Exhaust heat recovery apparatus | Mizuki Hayashida, Hiroaki Masubuchi, Tooru Hisanaga, Katsufumi Inoue | 2021-08-31 |