Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824539 | Perpendicular magnetic recording medium | Tomohisa Komoda, Mamoru Ishizuka, Shuhei Tsuchimoto | 1989-04-25 |
| 4816946 | Method of manufacturing thin film magnetic head | Toru Kira, Hidenori Yamasaki | 1989-03-28 |
| 4803581 | Thin film yoke-type magnetoresistive head | Toru Kira, Teiichi Miyauchi, Kiyohito Nakai, Kengo Shiiba | 1989-02-07 |