Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847156 | Magnetic recording medium | Yasuo Nishikawa, Akihiro Matsufuji, Yutaka Kakuishi | 1989-07-11 |
KM
Kenichi Masuyama
Overall (1989): #88,296 of 140,708Top 65%
1
Patents 1989