Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985514 | Method for production of water absorbent resin | Takumi Hatsuda, Yoshio Irie, Tadao Shimomura | 1991-01-15 |
| 4973632 | Production process for water-absorbent resin | Kinya Nagasuna, Takashi Namba, Koji Miyake, Tadao Shimomura | 1990-11-27 |
| 4920202 | Method for production of hydrophilic polymer from hydrated gel polymer | Yoshio Irie, Kaoru Iwasaki, Takumi Hatsuda, Nobuyuki Harada, Kunihiko Ishizaki +2 more | 1990-04-24 |
| 4734478 | Water absorbing agent | Tsuneo Tsubakimoto, Tadao Shimomura, Yoshio Irie, Yoshihiko Masuda, Takumi Hatsuda | 1988-03-29 |
| 4656232 | Method for production of polymer | Masashi Nakaki, Katsumi Terawaki, Tadao Shimomura | 1987-04-07 |