Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657931 | Optical disc drive for performing read/write operations on optical disks | Tomohiko Baba | 2003-12-02 |
| 6653612 | Optical pickup and an optical disc drive using such optical pickup | — | 2003-11-25 |
| 6522809 | Waveguide grating device and method of controlling Bragg wavelength of waveguide grating | Masakazu Takabayashi, Kiichi Yoshiara, Sadayuki Matsumoto, Junichiro Hoshizaki, Takeyuki Maegawa +3 more | 2003-02-18 |
| 6516401 | Data reading method and data reading apparatus | Ryoji Fukuhisa, Hirofumi Saitoh, Shoichi Hirashita | 2003-02-04 |