Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6043964 | Cartridge for a recording medium having cover bearing elements that prevent dust from entering the cartridge | — | 2000-03-28 |
| 5323381 | Disc for recording information signals | Kenji Takahashi, Daiki Kobayashi | 1994-06-21 |