Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6453369 | Access protection from unauthorized use of memory medium using identifier unique to data storage device | Teruji Yamakawa | 2002-09-17 |
| 6345385 | Storage unit, storage medium and identification information recording method | Teruji Yamakawa | 2002-02-05 |