Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11391378 | Butterfly valve | — | 2022-07-19 |
| 10021864 | Fishing reel and magnetic seal device therefor | Hirokazu Hirayama, Hirokazu Hiraoka | 2018-07-17 |
| 9816616 | Magnetic fluid seal | Kotaro Oshita | 2017-11-14 |