Issued Patents 2003
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667937 | Optical information recording medium and optical information recording and reproducing apparatus | Naoyasu Miyagawa, Eiji Ohno, Nobuo Akahira | 2003-12-23 |
| 6661749 | Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus | Shigeaki Furukawa, Tetsuya Akiyama | 2003-12-09 |
| 6611491 | Optical recording medium having dual recording layers | Ken'ichi Nagata, Nobuo Akahira | 2003-08-26 |
| 6590915 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Tomoaki Uno, Kiminori Mizuuchi | 2003-07-08 |
| 6587420 | Recording and reproducing method for optical information recording medium and optical information recording medium | Ken'ichi Nagata, Noboru Yamada, Nobuo Akahira | 2003-07-01 |
| 6584054 | Optical recording method and optical recording device | Shigeaki Furukawa, Yuuichi Kamioka, Norifumi Oda | 2003-06-24 |
| 6535468 | OPTICAL RECORDING MEDIUM HAVING AN AREA FOR RECORDING A PLURALITY OF RECORDING/REPRODUCTION CONDITIONS TO BE USED IN RECORDING/REPRODUCTION APPARATUSES AND RECORDING/REPRODUCTION METHOD AND APPARATUS THEREFOR | Tetsuya Akiyama, Shigeaki Furukawa, Kenji Narumi, Hiroyuki Yamaguchi | 2003-03-18 |
| 6532209 | Optical information recording medium and optical information recording and reproducing apparatus | Naoyasu Miyagawa, Eiji Ohno, Nobuo Akahira | 2003-03-11 |