Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744568 | Objective lens, method for correcting manufacturing error thereof, and optical pick-up device using the same | Kazuya Kitamura, Yukio Kurata, Takeshi Yamaguchi | 2004-06-01 |
| 6741406 | Objective lens, optical pickup-device equipped with same and assembling method of same | Kazuya Kitamura, Yukio Kurata | 2004-05-25 |