Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7960876 | Magnet rotor, electromagnetic drive device and light quantity adjustment device using the magnet rotor | Keijirou Amino, Katsura Nakajima | 2011-06-14 |
| 7685698 | Manufacturing method of magnet rotor | Keijirou Amino, Katsura Nakajima | 2010-03-30 |
| 7287864 | Light amount adjusting device and projector using the same | Masahide Shirasu, Kazuhiro Fukasawa, Sumio Takeuchi | 2007-10-30 |