Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668111 | Sustained-release preparation | Yasutaka Igari, Yasuaki Ogawa | 1997-09-16 |
| 5665394 | Matrix for sustained-release preparation | Yasutaka Igari, Akira Saikawa, Kayoko Okamoto, Masahisa Oka, Atsunori Sano | 1997-09-09 |
| 5594091 | Matrix for sustained-release preparation | Yasutaka Igari, Akira Saikawa, Kayoko Okamoto, Masahisa Oka, Atsunori Sano | 1997-01-14 |