Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695603 | Deinking agent with polyoxyalkylene group consisting of specific block and random arrangement units and method for reclaiming waste paper using same | Daisuke Shiba, Koji Hamaguchi | 1997-12-09 |
| 5302243 | Deinking method | Yoichi Ishibashi, Yoshinao Kono, Yoshitaka Miyauchi, Hiromichi Takahashi | 1994-04-12 |
| 5288369 | Deinking method and deinking composition | Yoichi Ishibashi, Yoshitaka Miyauchi, Koji Hamaguchi, Hideaki Urushibata, Hiromichi Takahashi | 1994-02-22 |
| 5282928 | Deinking composition | Hiromichi Takahashi, Yoichi Ishibashi, Yoshitaka Miyauchi, Yoshinao Kono | 1994-02-01 |