Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5789088 | Magnetic recording medium having a metal underlayer and a CoCr alloy magnetic thin film | Junichi Nakai, Kazuo Yoshikawa, Eisuke Kusumoto, Takashi Miyamoto | 1998-08-04 |
| 5122423 | Magnetic recording medium comprising a chromium underlayer deposited directly on an electrolytic abrasive polished high purity aluminum alloy substrate | Takashi Hase, Yoshihiko Onishi, Hidetaka Hayashi, Motoharu Sato | 1992-06-16 |