Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5726210 | Process for preparation of anion exchange resin | Youichi Tamura | 1998-03-10 |
| 4636554 | Process for producing a chloromethylated polymer | Akira Tada, Takamitsu Morita, Yoshihiro Kusumoto | 1987-01-13 |
| 4500652 | Process for producing cation exchange resins without swelling during sulphonation process | Yoshiharu Misaka, Masamiti Hatae | 1985-02-19 |