Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312559 | Deinking process using amine compounds and white water recycling | Yuichi Irinatsu, Hiromichi Takahashi | 2001-11-06 |
| 6251220 | Wastepaper deinking method using amine or acid salt of amine in the flotation stage | Yuichi Irinatsu, Hiromichi Takahashi | 2001-06-26 |
| 6179957 | Method for controlling deinking process using contact angle | Yuichi Irinatsu, Hiromichi Takahashi | 2001-01-30 |
| 6103056 | Method for controlling deinking flotation using interfacial potential of ink particles and pulp | Yuichi Irinatsu, Hiromichi Takahashi | 2000-08-15 |
| 5801135 | Deinking composition comprising a fatty acid mixture and a nonionic surfactant | Toshiki Sowa, Koji Hamaguchi, Daisuke Shiba, Hiromichi Takahashi | 1998-09-01 |
| 5302243 | Deinking method | Yoichi Ishibashi, Yoshinao Kono, Takanobu Shiroishi, Hiromichi Takahashi | 1994-04-12 |
| 5288369 | Deinking method and deinking composition | Yoichi Ishibashi, Koji Hamaguchi, Hideaki Urushibata, Hiromichi Takahashi, Takanobu Shiroishi | 1994-02-22 |
| 5282928 | Deinking composition | Hiromichi Takahashi, Yoichi Ishibashi, Takanobu Shiroishi, Yoshinao Kono | 1994-02-01 |
| 5281358 | Deinking agent | Hideaki Urushibata, Koji Hamaguchi, Hiroyoshi Hiramatsu | 1994-01-25 |
| 5120397 | Deinking agent | Hideaki Urushibata, Koji Hamaguchi, Hiroyoshi Hiramatsu | 1992-06-09 |
| 5100574 | Deinking agent | Hideaki Urushibata, Hiroyoshi Hiramatsu, Koji Hamaguchi | 1992-03-31 |
| 4964949 | Deinking composition for reclamation of waste paper | Koji Hamaguchi, Fumihiko Togashi | 1990-10-23 |