Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817563 | Recording tape cartridge | — | 2004-11-16 |
| 6811108 | Recording tape cartridge | — | 2004-11-02 |
| 6739539 | Recording tape cartridge | Kazuo Hiraguchi | 2004-05-25 |
| 6695241 | Cartridge | — | 2004-02-24 |