Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840818 | Method of making magnetic recording medium | Hiroshi Chikamasa, Masaaki Utsui | 1989-06-20 |
YN
Yasutami Nojiri
Overall (1989): #41,896 of 140,708Top 30%
1
Patents 1989