Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4522254 | Heat storage trough | Hajime Koizumi, Shumpei Ohara, Kiyoshi Kouda, Noriyasu Sagara, Satoshi Togari +1 more | 1985-06-11 |
| 4285333 | Solar energy collecting system | Yasuo Tanaka, Kenji Shimokawa | 1981-08-25 |