Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1089545 | Venturi fitting | Kyohei OGAWA | 2025-08-19 |
| D1088189 | Venturi main body | Kyohei OGAWA | 2025-08-12 |
| 11819811 | Premixing device and combustion device equipped with the premixing device | Keiichi Miura, Tatsuya KARAKI, Kyohei OGAWA | 2023-11-21 |
| 11635203 | Premixing device and combustion apparatus including the same | Kyohei OGAWA, Keiichi Miura, Tatsuya KARAKI | 2023-04-25 |
| 11506421 | Water heating device | Keiichi Miura | 2022-11-22 |