Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4273184 | Solar heat utilized air-conditioning system | Shunroku Tanaka, Jun Inoue, Keiichi Minamino | 1981-06-16 |
| 4269263 | Cooling and heating system utilizing solar heat | Kouichi Katayama | 1981-05-26 |