Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7117936 | Tube for heat exchanger | Hajime Ohata, Naoto Takayanagi, Shoji Akiyama, Yoshihisa Eto | 2006-10-10 |
| 6666265 | Heat exchanger, method of manufacturing the heat exchanger, and method of manufacturing tube for heat exchange | Soichi Kato, Muneo Sakurada, Shin Kurihara, Shoji Akiyama, Kazuo Ochiai | 2003-12-23 |