Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11739980 | Heat exchanging unit, heat exchanging apparatus, and hot water supply system | Toshiaki Aoki, Takeharu Totsuka | 2023-08-29 |
| 11103818 | Filter device and water heater | Toshiaki Aoki, Tetsuya Oishi | 2021-08-31 |