Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6765732 | Optical pickup lens, molded optical component, handling method, and mold for optical component | Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru +3 more | 2004-07-20 |
| 6728042 | Optical pick-up device and objective lens used therein | Kohei Ota | 2004-04-27 |
| 6687209 | Optical pickup apparatus, objective lens, apparatus for reproducing and/or recording optical information recording medium | Kohei Ota | 2004-02-03 |