Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6258267 | Rotary drum filtration apparatus with a detachable filter | — | 2001-07-10 |
| 5992642 | Filtering apparatus and filtering system | — | 1999-11-30 |
| 5871643 | Rotary drum filtration apparatus with a detachable filter | — | 1999-02-16 |
| 5849183 | Filtration apparatus | Tadao Uchiyama | 1998-12-15 |