Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857402 | Magnetic recording medium | Yasuo Nishikawa, Nobuo Tsuji | 1989-08-15 |
HM
Hajime Miyazuka
Overall (1989): #108,104 of 140,708Top 80%
1
Patents 1989