Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313296 | Heat exchanger and water heater | Takeshi Ohigashi, Shigeo Sugie, Norihide Wada, Kengo Horiuchi | 2025-05-27 |
| 12253311 | Heat exchanger and water heating device including the same | Norihide Wada | 2025-03-18 |
| 11454421 | Heat exchanger and water heating apparatus | — | 2022-09-27 |
| 11441814 | Water heating device | Masaki Kondo | 2022-09-13 |
| 10890356 | Heat exchange device and heat source machine | Takeshi Ohigashi, Masaki Kondo, Norihide Wada | 2021-01-12 |