Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258167 | Extractant for rare earth metal and method for extracting the same | Toshio Takahashi, Yukari Ishii | 1993-11-02 |
| 5073545 | Agent containing an ellagic acid series compound for external application and use thereof | Masatoshi Arima, Keiji Takeuchi, Hiroshi Deura, Keiichiro Ishida | 1991-12-17 |