Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11162743 | Heat exchanger tank | Osamu Hakamata, Tatsuo Ozaki | 2021-11-02 |
| 10598444 | Heat exchanger | Hajime Sugito, Osamu Hakamata, Marta Roberti, Giuseppe Tiziano | 2020-03-24 |
| 10317148 | Heat exchanger | Osamu Hakamata, Tatsuo Ozaki | 2019-06-11 |
| 10113812 | Heat exchanger and manufacturing method thereof | Hajime Sugito, Hideyuki Ota, Masato Itou, U Ou | 2018-10-30 |