Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34713 | Vinylamine copolymer flocculating agent etc. | Takaharu Itagaki, Mitsuaki Shiraga, Kohichi Satoh | 1994-08-30 |
| 5320712 | Method for sizing of paper | Masato Nakajima | 1994-06-14 |
| 5281340 | Cationic polymer flocculating agents | Shin Sato, Toshiaki Sakakihara | 1994-01-25 |