Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880886 | Process for production of highly water-absorbent resin | Tetsuo Moriya, Hiroshi Aoyama | 1989-11-14 |
| 4826917 | Method of producing highly absorbent resins | Tetsuo Moriya | 1989-05-02 |