Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6728181 | Code judging apparatus and method, record medium judging apparatus and method, and information recording apparatus and method | Yoshitaka Shimoda, Masayoshi Yoshida, Tetsuaki Kawahara | 2004-04-27 |