Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754864 | Tyrosinase activity controlling agent, process for producing the same and external preparation containing the same | Yutaka Tokiwa, Masaru Kitagawa, Kenji Yoshino, Shusaku Yanagidani, Tetsuzo Totani +1 more | 2010-07-13 |
| 6987138 | Biodegradable polylactide resin composition | Yutaka Tokiwa | 2006-01-17 |