Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886714 | Platelike magnetic powder and a recording medium which uses the platelike magnetic powder | Masaki Aoki, Hideaki Komoda, Nobuyuki Aoki, Ikuo Ota, Keiichi Ochiai | 1989-12-12 |
| 4811148 | Alloy magnetic recording head | Masaki Aoki, Masayuki Sakai, Hideyuki Okinaka, Hozumi Hirota | 1989-03-07 |