Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7238743 | Production process for water-absorbent resin | Yukihiro Matsumoto, Kunihiko Ishizaki | 2007-07-03 |
| 7009010 | Water-absorbent resin and production process therefor | Kunihiko Ishizaki | 2006-03-07 |
| 6927268 | Production process for water-absorbent resin | Yukihiro Matsumoto, Kunihiko Ishizaki | 2005-08-09 |
| 6576713 | Water-absorbent resin powder and production process therefor | Kunihiko Ishizaki, Nobuyuki Harada, Takumi Hatsuda, Shinichi Fujino | 2003-06-10 |
| 6254990 | Surface-crosslinking process for water-absorbent resin | Kunihiko Ishizaki, Shigeru Sakamoto, Nobuyuki Harada, Kazuhisa Hitomi | 2001-07-03 |
| 6107358 | Water-absorbent resin and method for production thereof | Nobuyuki Harada, Koji Miyake, Yoshihiro Motono, Hideyuki Tahara, Takumi Hatsuda +4 more | 2000-08-22 |
| 6100305 | Method of production of water-absorbing resin | Koji Miyake, Yoshihiro Motono, Nobuyuki Harada, Akito Yano, Shigeru Sakamoto | 2000-08-08 |
| 5998556 | Raw material used for producing heat-resistant resins, heat-resistant resins, and process for producing heat-resistant resins | Kenichi Ueda, Kazumi Fujioka, Kazuo Kishino | 1999-12-07 |