Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627869 | Beam shaper, and semiconductor laser source device and optical head using the beam shaper | Yasuhiro Tanaka, Michihiro Yamagata | 2003-09-30 |
| 6606198 | Lens array | Yasuhiro Tanaka, Michihiro Yamagata, Yoshikazu Sano, Tomoko Komatsu, Michiyo Ichikawa +2 more | 2003-08-12 |
| 6590717 | Optical system for optical disk, optical head unit for optical disk, and optical drive device | Yasuhiro Tanaka, Michihiro Yamagata | 2003-07-08 |
| 6504975 | Coupling lens and semiconductor laser module | Michihiro Yamagata, Yasuhiro Tanaka, Hiroyuki Asakura | 2003-01-07 |