Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998033 | Gas dynamic bearing for spindle motor | Yasushi Hisabe, Toshihiro Ohtani, Masahiko Kishi, Yoshio Sato, Daisuke Konno +6 more | 1991-03-05 |
| 4984881 | Rotation supporting device of a polygon mirror | Yasushi Hisabe, Toshihiro Ohtani, Toshiya Kanamori | 1991-01-15 |