Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5880077 | Wastepaper reclaiming deinking agent | Yoichi Ishibashi | 1999-03-09 |
| 5643409 | Method for deinking wastepaper | Koji Hamaguchi, Yoichi Ishibashi | 1997-07-01 |
| 5585339 | Deinking composition and deinking method | Koji Hamaguchi, Yoichi Ishibashi | 1996-12-17 |
| 5417807 | Deinking formulation for flexographic inks | Francisco F. Fossas, Pedro F. Ferre, Narciso R. Castano, Stephen P. Williams | 1995-05-23 |
| 5415733 | Method of removing hydrophilic ink | Peter M. Robinson, Stephen P. Williams, Thomas F. Skaar | 1995-05-16 |
| 5304316 | Deinking agent for regenerating waste printed paper comprising reaction product of compound having an OH group, a dicarboxylic acid, or an anhydride thereof | Koji Hamaguchi, Akio Kimura, Shigetoshi Suzue | 1994-04-19 |
| 5288369 | Deinking method and deinking composition | Yoichi Ishibashi, Yoshitaka Miyauchi, Koji Hamaguchi, Hiromichi Takahashi, Takanobu Shiroishi | 1994-02-22 |
| 5281358 | Deinking agent | Koji Hamaguchi, Hiroyoshi Hiramatsu, Yoshitaka Miyauchi | 1994-01-25 |
| 5120397 | Deinking agent | Koji Hamaguchi, Hiroyoshi Hiramatsu, Yoshitaka Miyauchi | 1992-06-09 |
| 5100574 | Deinking agent | Hiroyoshi Hiramatsu, Yoshitaka Miyauchi, Koji Hamaguchi | 1992-03-31 |