Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7960876 | Magnet rotor, electromagnetic drive device and light quantity adjustment device using the magnet rotor | Akira Hakozaki, Katsura Nakajima | 2011-06-14 |
| 7685698 | Manufacturing method of magnet rotor | Akira Hakozaki, Katsura Nakajima | 2010-03-30 |