Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7354346 | Torque limiter | Seiichi Takada, Masaaki Honda, Takashi Yamamoto | 2008-04-08 |
| 6905248 | Electroconductive grease-filled bearing | Kenichiro Naito, Atsushi Morooka, Hidenori Wakamatsu, Yasumichi Kido, You Doi +1 more | 2005-06-14 |
| 6425645 | Thrust ball bearing | Kanetsugu Tsurutani | 2002-07-30 |