Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831730 | Optical magnification adjustment system and projection exposure device | Noriyoshi Matsumoto, Youichi Hirabayashi | 2004-12-14 |
| 6738195 | Optical magnification adjustment system and projection exposure device | Noriyoshi Matsumoto, Youichi Hirabayashi | 2004-05-18 |