Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885208 | Magnetic recording medium | Hiroaki Araki, Kiyomi Ejiri | 1989-12-05 |
TO
Takao Ohya
Overall (1989): #52,605 of 140,708Top 40%
1
Patents 1989