Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8363533 | Optical pickup apparatus | Tohru Hotta, Ryoichi Kawasaki, Hiroyuki Shindo | 2013-01-29 |
| 8154978 | Optical pickup apparatus | Tohru Hotta, Ryoichi Kawasaki, Hiroyuki Shindo | 2012-04-10 |
| 7616550 | Optical pickup unit | — | 2009-11-10 |
| 6907053 | Semiconductor laser device, and optical pickup apparatus using the device | Kenji Ohgiyama, Kiyoaki Tsumura, Koji Yamashita, Toshio Takeuchi, Susumu Ishida | 2005-06-14 |
| 6134210 | Laser beam emitting device and an optical pickup provided with the laser beam emitting device | Osamu Masakado | 2000-10-17 |