Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10731872 | Water heating system | Shinichi Okamoto | 2020-08-04 |
| 10539338 | Combustion device and combustion device system including combustion device | Shinichi Okamoto | 2020-01-21 |
| 10337763 | Water heating system | Shinichi Okamoto | 2019-07-02 |
| 10240818 | Water heating system | Shinichi Okamoto | 2019-03-26 |
| 10168047 | Water heating apparatus and system having a scale detecting function | Isao Satoh, Yuiko Yano, Yuki Maeshima | 2019-01-01 |