Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8068401 | Objective optical system and optical information recording/reproducing device having the same | Daisuke Koreeda, Shuichi Takeuchi | 2011-11-29 |
| 8004955 | Coupling lens and optical information recording/reproducing device having the same | Shuichi Takeuchi | 2011-08-23 |
| 7920444 | Assembling method for optical system of optical pick-up | Koichi Maruyama, Toshihiro Tanaka | 2011-04-05 |
| 7872958 | Optical information recording/reproducing device, optical element for the same, and design method of the same | Daisuke Koreeda, Koichi Maruyama | 2011-01-18 |