Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824539 | Perpendicular magnetic recording medium | Tomohisa Komoda, Shuhei Tsuchimoto, Mitsuhiko Yoshikawa | 1989-04-25 |
MI
Mamoru Ishizuka
Overall (1989): #80,942 of 140,708Top 60%
1
Patents 1989