Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6132875 | Magnetic recording medium and magnetic head having carbon protective layers | Katsumi Kiuchi, Eishin Yamakawa, Makoto Watanabe, Masahiro Takagi, Akira Kikuchi | 2000-10-17 |
| 5914168 | Magnetic recording medium and magnetic disc device | Hiroaki Wakamatsu, Katsuhide Sone, Kiyoshi Yamaguchi, Yoshihiro Mitobe | 1999-06-22 |
| 5486276 | Method for manufacturing small magnetic disks from a large disk | Masahiro Takagi, Hiroshi Akiba, Kazuyuki Seki | 1996-01-23 |
| 4675075 | Magnetic recording production processes | Yusaku Sakai, Shinji Ohtaki, Yasushi Tamaki, Hikaru Nagai | 1987-06-23 |
| 4664963 | Magnetic recording medium and production processes thereof | Yusaku Sakai, Shinji Ohtaki, Yasushi Tamaki, Hikaru Nagai | 1987-05-12 |