Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857402 | Magnetic recording medium | Yasuo Nishikawa, Hajime Miyazuka | 1989-08-15 |
| 4837081 | Magnetic recording medium | Yasuyuki Yamada, Hajime Miyatsuka, Tsutomu Okita | 1989-06-06 |
NT
Nobuo Tsuji
Overall (1989): #19,082 of 140,708Top 15%
2
Patents 1989