Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7924513 | Lens barrel | Toshimitsu Iwai, Akira Kagaya, Takatoshi Ohzeki, Ken Tanaka, Norihisa Kawamura | 2011-04-12 |
| 7768722 | Lens barrel | Toshimitsu Iwai, Akira Kagaya, Takatoshi Ohzeki, Ken Tanaka, Norihisa Kawamura | 2010-08-03 |