Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496807 | Recording medium, recording method and recording apparatus incorporating anti-tamper features involving writing billing information into a write-once area | Tatsuya Inokuchi, Yoichiro Sako, Shuichi Ito, Kazuko Sakurai | 2002-12-17 |