Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5993666 | Maleic acid based copolymer, and its production process and use | Shigeru Yamaguchi, Yoshio Irie | 1999-11-30 |
| 5733857 | Maleic acid based copolymer and its production process and use | Shigeru Yamaguchi, Yoshio Irie | 1998-03-31 |
| 5668252 | Drying process of viscous solution containing (meth)acrylic acid-based polymer | Tokihiro Yokoi | 1997-09-16 |
| 5298570 | Biodegradable hydrophilic crosslinked polymer, process for producing it, and uses thereof | Hideyuki Tahara, Hiroshi Ito, Masahito Takagi, Yoshio Irie, Shigeru Yamaguchi | 1994-03-29 |