Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847147 | Magnetic recording medium | Masaaki Suzuki, Yasuo Tamai | 1989-07-11 |
| 4812351 | Magnetic recording medium | Tsutomu Okita, Hiroshi Hashimoto | 1989-03-14 |
MA
Masashi Aonuma
Overall (1989): #21,172 of 140,708Top 20%
2
Patents 1989