Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10352630 | Heat exchanger and hot water apparatus | Wataru Ooshita, Masaya Tateyama | 2019-07-16 |
| 10094589 | Fin-and-tube type heat exchanger and water heater including the same | Takeshi Oohigashi, Nobuhiro Takeda, Masaki Kondo, Wataru Ooshita, Kosuke Ichiyama | 2018-10-09 |
| 9829204 | Water heater including heat exchanger | Takeshi Oohigashi, Makoto Hirotsu | 2017-11-28 |