Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440151 | Solar heat collector | Takanobu Yamamoto, Isao Sumida, Moriaki Tsukamoto, Naohisa Watahiki | 1984-04-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440151 | Solar heat collector | Takanobu Yamamoto, Isao Sumida, Moriaki Tsukamoto, Naohisa Watahiki | 1984-04-03 |