Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892136 | Heat exchanger | Takayuki Ichihara, Masuhito Iinuma, Eriya Arita, Haruo Yokoo | 1990-01-09 |
| 4708199 | Heat exchanger | Akitsuna Nakagaki, Akio Miyazawa, Takeshi Mitomo, Takayuki Ichihara | 1987-11-24 |
| 4653581 | Plate type heat exchanger | Akitsuna Nakagaki, Akio Miyazawa | 1987-03-31 |