Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667937 | Optical information recording medium and optical information recording and reproducing apparatus | Kenichi Nishiuchi, Naoyasu Miyagawa, Nobuo Akahira | 2003-12-23 |
| 6660451 | Optical information recording medium | Yoshitaka Sakaue | 2003-12-09 |
| 6613170 | Optical information recording medium and its manufacturing method and apparatus | Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue | 2003-09-02 |
| 6532209 | Optical information recording medium and optical information recording and reproducing apparatus | Kenichi Nishiuchi, Naoyasu Miyagawa, Nobuo Akahira | 2003-03-11 |