Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850991 | Absorbent article | Minoru Nakanishi, Akira Sakurai, Zenbei Meiwa, Norihiro Abe | 1989-07-25 |
| 4812486 | Absorbent resin with excellent stability | Yasunori Hosokawa | 1989-03-14 |
| 4806578 | Process for producing highly absorptive resin | Takahiro Ohya | 1989-02-21 |