Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149253 | Magnet pumps | Eiji Miyamoto, Yoshinori Ojima, Tadashi Yakabe | 1992-09-22 |
| 4998033 | Gas dynamic bearing for spindle motor | Yasushi Hisabe, Noriyuki Osada, Toshihiro Ohtani, Masahiko Kishi, Yoshio Sato +6 more | 1991-03-05 |
| 4984881 | Rotation supporting device of a polygon mirror | Noriyuki Osada, Yasushi Hisabe, Toshihiro Ohtani | 1991-01-15 |
| 4820949 | Electrically powered apparatus | Shotaro Mizobuchi, Katsumi Sasaki, Katsutoshi Chiba, Yoshikazu Kimura | 1989-04-11 |