Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6438097 | Optical recording disc capable of preventing illegal copy | Seiji Kajiyama, Youichi Tsuchiya, Kouichi Tada | 2002-08-20 |
| 6400653 | Information recording/reproducing apparatus to record/reproduce information on a recording medium recorded with an address mark | Kenji Asano, Satoshi Sumi, Yoshiharu Uchihara, Noboru Mamiya, Toshiaki Hioki | 2002-06-04 |
| 6339571 | Storage medium recorded with recording/reproducing conditions depending upon recording densities and method of recording and reproducing therefor | Toshiaki Hioki | 2002-01-15 |