Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8057237 | System for evaluating skills of to-be-examined person | Takasi Kumagai | 2011-11-15 |
| 7963771 | Experiment and education system employing a plurality of units | Takasi Kumagai | 2011-06-21 |