Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798765 | Perpendicular magnetic recording medium | Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura | 1989-01-17 |
| 4792486 | Perpendicular magnetic recording medium | Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura | 1988-12-20 |
| 4745510 | Perpendicular magnetic recording and reproducing system | Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura | 1988-05-17 |
| 4731300 | Perpendicular magnetic recording medium and manufacturing method thereof | Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura | 1988-03-15 |