Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798765 | Perpendicular magnetic recording medium | Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura | 1989-01-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798765 | Perpendicular magnetic recording medium | Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura | 1989-01-17 |