Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4607687 | Heat storage device | Shumpei Ohara, Noriyasu Sagara, Yoshinobu Arai | 1986-08-26 |
| 4522254 | Heat storage trough | Hajime Koizumi, Shumpei Ohara, Kiyoshi Kouda, Muneshige Nagatomo, Noriyasu Sagara +1 more | 1985-06-11 |