Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888212 | Process for the preparation of magnetic recording medium | Shinobu Iida, Shigeo Komine, Keisuke Yamada | 1989-12-19 |
| 4851288 | Magnetic recording system | Tadashi Ishikuro, Kouiti Mochizuki | 1989-07-25 |
| 4844991 | Magnetic recording medium and process for the preparation of the same | Toshihiko Miura, Yutaka Kakuishi | 1989-07-04 |
| 4840842 | Abrasive tape | Nobutaka Yamaguchi, Masami Suzuki, Yasuyuki Yamada | 1989-06-20 |
| 4812330 | Process for producing a magnetic recording medium | Tadashi Ishikuro | 1989-03-14 |