Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849354 | Process for producing menaquinone-4 | Kenichiro Takayama, Yukoh Arai, Shizuko Shirasuna | 1989-07-18 |
| 4673645 | Process and microorganisms for producing mitomycin A by fermentation | Yuko Arai, Kazuyuki Mineura | 1987-06-16 |