Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597075 | Method and apparatus for screening waste paper pulp | Naoyuki Iwashige | 1997-01-28 |
| 5564572 | Method and apparatus for screening waste paper pulp | Naoyuki Iwashige | 1996-10-15 |
| 5176822 | Flotation machine for deinking | Naoyuki Iwashige | 1993-01-05 |
| 5108586 | Flotation machine for deinking | Naoyuki Iwashige | 1992-04-28 |