Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8848501 | Detection lens, lens unit, optical pickup device, optical disc device, computer, optical disc player and optical disc recorder | Toshiyasu Tanaka, Noriaki Terahara, Takeshi Ohta, Fumitomo Yamasaki | 2014-09-30 |
| 8473972 | Optical pickup and drive apparatus | Noriaki Terahara, Toshiyasu Tanaka, Takeshi Ohta, Fumitomo Yamasaki | 2013-06-25 |