Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840844 | Magnetic recording medium | Masaaki Futamoto, Yukio Honda, Shinichiro Saito, Takashi Nishimura, Kazuetsu Yoshida +6 more | 1989-06-20 |
| 4828919 | Magnetic recording medium and process for preparing the same | Hideo Fujiwara, Tsuyoshi Maro | 1989-05-09 |