Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493313 | Recording medium having grooves and prepits and a recording system for the recording medium | Masahiro Kato, Makoto Sato | 2002-12-10 |
| 6480448 | Disc player | Eisaku Kawano, Yoshitaka Shimoda, Hidehiro Ishii, Masahiro Kato, Kunihiko Horikawa | 2002-11-12 |