Issued Patents 2002
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493304 | Optical disk apparatus | Katsuya Watanabe, Takeharu Yamamoto, Takashi Kishimoto | 2002-12-10 |
| 6489002 | Optical recording medium having dual information surfaces | Shin-ichi Tanaka, Yasuhiro Sugihara, Hiroshi Taniguchi, Michiyoshi Nagashima | 2002-12-03 |
| 6434094 | Optical disk apparatus | Shin-ichi Yamada, Yasuaki Edahiro, Kouichi Takamine, Katsuya Watanabe | 2002-08-13 |
| 6408285 | Optical disk reading device using both a decipher key and disk identification information for decryption | Mitsuaki Oshima, Yoshino Gotoh, Shinichi Tanaka, Kenji Koishi, Yoshinari Takemura | 2002-06-18 |
| 6396779 | Optical disk apparatus having tracking control for positioning a light beam along a track on an optical disk | Kenji Fujiune, Yoshihiro Kanda, Yuuichi Kuze | 2002-05-28 |
| 6381588 | Optical disk recordable using both a cipher key and disk identification information for encryption | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Yoshinari Takemura | 2002-04-30 |
| 6343282 | Optical disk reading device using both a decipher key and disk identification information | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Yoshinari Takemura | 2002-01-29 |
| 6339566 | Optical recording/reproduction device | Takashi Kishimoto, Katsuya Watanabe, Takeharu Yamamoto, Kouichi Ikeuchi, Kazushi Andoh | 2002-01-15 |