Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350523 | Anion exchange method | Masao Tomoi, Atsuo Kiyokawa, Teruo Onozuka, Tsuyoshi Ito | 1994-09-27 |
| 5304243 | Method of producing organic group modified silica particles | Muneaki Yamaguchi, Yuko Tanaka | 1994-04-19 |