Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10948236 | Heat exchanger and water heater including same | Norihide Wada, Nobuhiro Takeda | 2021-03-16 |
| 10890356 | Heat exchange device and heat source machine | Naoya Shiotsu, Masaki Kondo, Norihide Wada | 2021-01-12 |