Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10792597 | Suction strainer | Makoto Ishizuka, Tatsuhiro OSHITA | 2020-10-06 |
| 10525386 | Filter device | Tatsuhiro OSHITA, Makoto Ishizuka | 2020-01-07 |
| 10272373 | Return filter | Makoto Ishizuka, Tatsuhiro OSHITA | 2019-04-30 |
| 9987570 | Filter element and filtering device | Hideo NAKAOKA | 2018-06-05 |