Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6541104 | Magnetic recording medium and a magnetic recording device | Chiaki Okuyama, Iwao Okamoto | 2003-04-01 |
| 6534204 | Magnetic storage medium | Yuki Yoshida, Kenji Sato, Iwao Okamoto | 2003-03-18 |