Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12104826 | Water heater | Ryosuke Yuge | 2024-10-01 |
| 10465943 | Water heat exchanger with tube drainage member | Toshimitsu Nagasaka | 2019-11-05 |
| 10458728 | Turbulence member and heat exchanger using same, and water heater | Hidenao Negi, Toshimitsu Nagasaka | 2019-10-29 |
| 10197343 | Turbulence generator | Hidenao Negi, Toshimitsu Nagasaka | 2019-02-05 |