Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5863631 | Perpendicular magnetic recording medium and magnetic recording device using the same | Yoshiaki Sonobe, Yoshihiro Ikeda, Hiroshi Uchida, Takashi Toyooka | 1999-01-26 |