Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7417806 | Lens with reference mounting surface | Toshiaki Katsuma, Masao Mori, Yu Kitahara, Yoko Yamamoto | 2008-08-26 |
| 7220064 | Coupling optical system for optical communications | Masao Mori, Yu Kitahara, Yoko Yamamoto, Toshiaki Katsuma | 2007-05-22 |
| 6956704 | High magnification, four-group zoom lens | Nobuaki Toyama | 2005-10-18 |
| 6940656 | Large zoom ratio, four-group zoom lens | Nobuaki Toyama | 2005-09-06 |