Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869090 | Method of processing base plate for magnetic disc | Kazuhiko Akamatsu, Takaaki Fukumoto, Toshiaki Ohmori, Tadashi Hyono | 1989-09-26 |
MT
Masuo Tada
Overall (1989): #78,573 of 140,708Top 60%
1
Patents 1989