Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6461711 | Optical information recording medium | Toshio Ishida, Yoshihisa Usami | 2002-10-08 |
| 6409012 | Disk cartridge storage case and index card | Hideaki Shiga, Kazuo Mukouhara, Yutaka Senda | 2002-06-25 |