Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888212 | Process for the preparation of magnetic recording medium | Masaaki Fujiyama, Shigeo Komine, Keisuke Yamada | 1989-12-19 |
SI
Shinobu Iida
Overall (1989): #57,823 of 140,708Top 45%
1
Patents 1989