Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5439993 | Process for the production of highly water absorptive polymers | Kiichi Ito, Tetsuya Yamamoto | 1995-08-08 |
| 4957984 | Process for producing highly water absorptive polymer | Kiichi Itoh, Takeshi Shibano, Shuhei Yada | 1990-09-18 |