Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10669173 | Ballast water treatment device and ballast water treatment method | Shigeki Fujiwara, Masanori Nagafuji, Yukihiko Okamoto | 2020-06-02 |
| 10052574 | Filtration device and filter element | Yuichi Takahashi, Masanori Nagafuji | 2018-08-21 |
| 10046253 | Filtration device | Yuichi Takahashi, Hiroyuki Takahashi, Masanori Nagafuji | 2018-08-14 |