Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6813681 | Information recording method and apparatus, information reproducing method and apparatus | Keiji Kanota, Noriyuki Yamamoto | 2004-11-02 |
| 6684026 | Information recording method and apparatus and information recording medium | Keiji Kanota, Shunji Okada, Shinichi Suenaga | 2004-01-27 |