Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6262227 | Process for producing a cationic polymer | Takeshi Goto, Yoshinobu Higashi, Takashi Fujisawa | 2001-07-17 |
| 5668252 | Drying process of viscous solution containing (meth)acrylic acid-based polymer | Keishi Tsuboi | 1997-09-16 |
| 5064563 | Process for producing and use of maleic acid (co-) polymer salt improved in biodegradability | Shigeru Yamaguchi, Shorbu Shioji, Yoshio Irie, Teruaki Fujiwara | 1991-11-12 |