Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267981 | Method of producing sustained-release preparation | Yutaka Yamagata, Yasutaka Igari, Masafumi Misaki | 2001-07-31 |
| 5665394 | Matrix for sustained-release preparation | Yasutaka Igari, Akira Saikawa, Shigeru Kamei, Masahisa Oka, Atsunori Sano | 1997-09-09 |
| 5594091 | Matrix for sustained-release preparation | Yasutaka Igari, Akira Saikawa, Shigeru Kamei, Masahisa Oka, Atsunori Sano | 1997-01-14 |
| 5534269 | Method of producing sustained-release preparation | Yasutaka Igari, Kazumichi Yamamoto, Yutaka Yamagata | 1996-07-09 |