Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8358571 | Optical pickup device | Kenji Nagatomi, Shigeharu Shirane, Masayuki Yoshie | 2013-01-22 |
| 8331211 | Optical pickup device | Kenji Nagatomi, Shigeharu Shirane, Masayuki Yoshie | 2012-12-11 |
| 8325580 | Optical pickup device | Kenji Nagatomi, Shigeharu Shirane, Masayuki Yoshie | 2012-12-04 |