Issued Patents 2025
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313296 | Heat exchanger and water heater | Takeshi Ohigashi, Shigeo Sugie, Kengo Horiuchi, Naoya Shiotsu | 2025-05-27 |
| 12305884 | Heat exchanger and water heater equipped with the same | — | 2025-05-20 |
| 12253311 | Heat exchanger and water heating device including the same | Naoya Shiotsu | 2025-03-18 |