Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7170831 | Optical pickup astigmatism measuring method, optical pickup astigmatism adjusting method, and optical pickup astigmatism measuring system | Hidekazu Ouchi, Yasushi Kumamaru, Naoki Yamada, Tetsuya Murakami, Yoshinari Kuwabara +1 more | 2007-01-30 |
| 7064308 | Method of and apparatus for adjusting the focus position of an optical pickup | Hidekazu Ouchi, Yasushi Kumamaru, Naoki Yamada, Tetsuya Murakami, Yoshinari Kuwabara +1 more | 2006-06-20 |