Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7020059 | Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up | Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Yoshihiro Kajiyama | 2006-03-28 |
| 7012868 | Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up | Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Yoshihiro Kajiyama | 2006-03-14 |
| 7006410 | Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup | Yasuo Osada, Junzo Kumakura, Hideo Nagasaka, Yoshihiro Kajiyama | 2006-02-28 |
| 6430143 | Optical pickup device and optical disc recording and/or reproducing apparatus | Yoshihiro Kajiyama, Junzo Kumakura, Yasuo Osada, Toshiyuki Kuroiwa, Hideo Nagasaka +5 more | 2002-08-06 |