Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816341 | Magnetic recording medium | Masatoshi Nakayama, Haruyuki Morita, Yuichi Kubota | 1989-03-28 |
KT
Keiko Tsuchiya
Overall (1989): #87,579 of 140,708Top 65%
1
Patents 1989